Improve system table for row policies. Remove function currentRowPolicies().

src/Access/ContextAccess.cpp

@@ -485,7 +485,7 @@ std::shared_ptr<const EnabledRolesInfo> ContextAccess::getRolesInfo() const
     return roles_info;
 }
 
-std::shared_ptr<const EnabledRowPolicies> ContextAccess::getRowPolicies() const
+std::shared_ptr<const EnabledRowPolicies> ContextAccess::getEnabledRowPolicies() const
 {
     std::lock_guard lock{mutex};
     return enabled_row_policies;

src/Access/ContextAccess.h

@@ -70,7 +70,7 @@ public:
 
     /// Returns information about enabled row policies.
     /// The function can return nullptr.
-    std::shared_ptr<const EnabledRowPolicies> getRowPolicies() const;
+    std::shared_ptr<const EnabledRowPolicies> getEnabledRowPolicies() const;
 
     /// Returns the row policy filter for a specified table.
     /// The function returns nullptr if there is no filter to apply.

src/Access/EnabledRowPolicies.cpp

@@ -6,9 +6,9 @@
 
 namespace DB
 {
-size_t EnabledRowPolicies::Hash::operator()(const DatabaseAndTableNameRef & database_and_table_name) const
+size_t EnabledRowPolicies::Hash::operator()(const MixedConditionKey & key) const
 {
-    return std::hash<std::string_view>{}(database_and_table_name.first) - std::hash<std::string_view>{}(database_and_table_name.second);
+    return std::hash<std::string_view>{}(key.database) - std::hash<std::string_view>{}(key.table_name) + static_cast<size_t>(key.condition_type);
 }
 
 
@@ -20,16 +20,22 @@ EnabledRowPolicies::EnabledRowPolicies(const Params & params_)
 EnabledRowPolicies::~EnabledRowPolicies() = default;
 
 
-ASTPtr EnabledRowPolicies::getCondition(const String & database, const String & table_name, ConditionType type) const
+ASTPtr EnabledRowPolicies::getCondition(const String & database, const String & table_name, ConditionType condition_type) const
 {
     /// We don't lock `mutex` here.
     auto loaded = map_of_mixed_conditions.load();
-    auto it = loaded->find({database, table_name});
+    auto it = loaded->find({database, table_name, condition_type});
     if (it == loaded->end())
         return {};
-    return it->second.mixed_conditions[type];
-}
 
+    auto condition = it->second.ast;
+
+    bool value;
+    if (tryGetLiteralBool(condition.get(), value) && value)
+        return nullptr; /// The condition is always true, no need to check it.
+
+    return condition;
+}
 
 ASTPtr EnabledRowPolicies::getCondition(const String & database, const String & table_name, ConditionType type, const ASTPtr & extra_condition) const
 {
@@ -41,31 +47,9 @@ ASTPtr EnabledRowPolicies::getCondition(const String & database, const String &
 
     bool value;
     if (tryGetLiteralBool(condition.get(), value) && value)
-        condition = nullptr;  /// The condition is always true, no need to check it.
+        return nullptr;  /// The condition is always true, no need to check it.
 
     return condition;
 }
 
-
-std::vector<UUID> EnabledRowPolicies::getCurrentPolicyIDs() const
-{
-    /// We don't lock `mutex` here.
-    auto loaded = map_of_mixed_conditions.load();
-    std::vector<UUID> policy_ids;
-    for (const auto & mixed_conditions : *loaded | boost::adaptors::map_values)
-        boost::range::copy(mixed_conditions.policy_ids, std::back_inserter(policy_ids));
-    return policy_ids;
-}
-
-
-std::vector<UUID> EnabledRowPolicies::getCurrentPolicyIDs(const String & database, const String & table_name) const
-{
-    /// We don't lock `mutex` here.
-    auto loaded = map_of_mixed_conditions.load();
-    auto it = loaded->find({database, table_name});
-    if (it == loaded->end())
-        return {};
-    return it->second.policy_ids;
-}
-
 }

src/Access/EnabledRowPolicies.h

@@ -4,8 +4,8 @@
 #include <Core/Types.h>
 #include <Core/UUID.h>
 #include <boost/smart_ptr/atomic_shared_ptr.hpp>
-#include <memory>
 #include <unordered_map>
+#include <memory>
 
 
 namespace DB
@@ -42,30 +42,32 @@ public:
     ASTPtr getCondition(const String & database, const String & table_name, ConditionType type) const;
     ASTPtr getCondition(const String & database, const String & table_name, ConditionType type, const ASTPtr & extra_condition) const;
 
-    /// Returns IDs of all the policies used by the current user.
-    std::vector<UUID> getCurrentPolicyIDs() const;
-
-    /// Returns IDs of the policies used by a concrete table.
-    std::vector<UUID> getCurrentPolicyIDs(const String & database, const String & table_name) const;
-
 private:
     friend class RowPolicyCache;
     EnabledRowPolicies(const Params & params_);
 
-    using DatabaseAndTableName = std::pair<String, String>;
+    struct MixedConditionKey
-    using DatabaseAndTableNameRef = std::pair<std::string_view, std::string_view>;
+    {
+        std::string_view database;
+        std::string_view table_name;
+        ConditionType condition_type;
+
+        auto toTuple() const { return std::tie(database, table_name, condition_type); }
+        friend bool operator==(const MixedConditionKey & left, const MixedConditionKey & right) { return left.toTuple() == right.toTuple(); }
+        friend bool operator!=(const MixedConditionKey & left, const MixedConditionKey & right) { return left.toTuple() != right.toTuple(); }
+    };
+
     struct Hash
     {
-        size_t operator()(const DatabaseAndTableNameRef & database_and_table_name) const;
+        size_t operator()(const MixedConditionKey & key) const;
     };
-    using ParsedConditions = std::array<ASTPtr, RowPolicy::MAX_CONDITION_TYPE>;
+
-    struct MixedConditions
+    struct MixedCondition
     {
-        std::unique_ptr<DatabaseAndTableName> database_and_table_name_keeper;
+        ASTPtr ast;
-        ParsedConditions mixed_conditions;
+        std::shared_ptr<const std::pair<String, String>> database_and_table_name;
-        std::vector<UUID> policy_ids;
     };
-    using MapOfMixedConditions = std::unordered_map<DatabaseAndTableNameRef, MixedConditions, Hash>;
+    using MapOfMixedConditions = std::unordered_map<MixedConditionKey, MixedCondition, Hash>;
 
     const Params params;
     mutable boost::atomic_shared_ptr<const MapOfMixedConditions> map_of_mixed_conditions;

src/Access/RowPolicy.cpp

@@ -8,7 +8,6 @@ namespace DB
 namespace ErrorCodes
 {
     extern const int NOT_IMPLEMENTED;
-    extern const int LOGICAL_ERROR;
 }
 
 
@@ -75,34 +74,4 @@ bool RowPolicy::equal(const IAccessEntity & other) const
         && restrictive == other_policy.restrictive && (to_roles == other_policy.to_roles);
 }
 
-
-const char * RowPolicy::conditionTypeToString(ConditionType index)
-{
-    switch (index)
-    {
-        case SELECT_FILTER: return "SELECT_FILTER";
-        case INSERT_CHECK: return "INSERT_CHECK";
-        case UPDATE_FILTER: return "UPDATE_FILTER";
-        case UPDATE_CHECK: return "UPDATE_CHECK";
-        case DELETE_FILTER: return "DELETE_FILTER";
-        case MAX_CONDITION_TYPE: break;
-    }
-    throw Exception("Unexpected condition type: " + std::to_string(static_cast<int>(index)), ErrorCodes::LOGICAL_ERROR);
-}
-
-
-const char * RowPolicy::conditionTypeToColumnName(ConditionType index)
-{
-    switch (index)
-    {
-        case SELECT_FILTER: return "select_filter";
-        case INSERT_CHECK: return "insert_check";
-        case UPDATE_FILTER: return "update_filter";
-        case UPDATE_CHECK: return "update_check";
-        case DELETE_FILTER: return "delete_filter";
-        case MAX_CONDITION_TYPE: break;
-    }
-    throw Exception("Unexpected condition type: " + std::to_string(static_cast<int>(index)), ErrorCodes::LOGICAL_ERROR);
-}
-
 }

src/Access/RowPolicy.h

@@ -2,10 +2,16 @@
 
 #include <Access/IAccessEntity.h>
 #include <Access/ExtendedRoleSet.h>
+#include <array>
 
 
 namespace DB
 {
+namespace ErrorCodes
+{
+    extern const int LOGICAL_ERROR;
+}
+
 
 /** Represents a row level security policy for a table.
   */
@@ -43,17 +49,27 @@ struct RowPolicy : public IAccessEntity
     enum ConditionType
     {
         SELECT_FILTER,
+
+#if 0 /// Row-level security for INSERT, UPDATE, DELETE is not implemented yet.
         INSERT_CHECK,
         UPDATE_FILTER,
         UPDATE_CHECK,
         DELETE_FILTER,
+#endif
 
         MAX_CONDITION_TYPE
     };
-    static const char * conditionTypeToString(ConditionType index);
-    static const char * conditionTypeToColumnName(ConditionType index);
 
-    String conditions[MAX_CONDITION_TYPE];
+    struct ConditionTypeInfo
+    {
+        const char * const raw_name;
+        const String name;    /// Lowercased with underscores, e.g. "select_filter".
+        const String command; /// Uppercased without last word, e.g. "SELECT".
+        const bool is_check;  /// E.g. false for SELECT_FILTER.
+        static const ConditionTypeInfo & get(ConditionType type);
+    };
+
+    std::array<String, MAX_CONDITION_TYPE> conditions;
 
     /// Sets that the policy is permissive.
     /// A row is only accessible if at least one of the permissive policies passes,
@@ -83,4 +99,58 @@ private:
 };
 
 using RowPolicyPtr = std::shared_ptr<const RowPolicy>;
+
+
+inline const RowPolicy::ConditionTypeInfo & RowPolicy::ConditionTypeInfo::get(ConditionType type_)
+{
+    static constexpr auto make_info = [](const char * raw_name_)
+    {
+        String init_name = raw_name_;
+        boost::to_lower(init_name);
+        size_t underscore_pos = init_name.find('_');
+        String init_command = init_name.substr(0, underscore_pos);
+        boost::to_upper(init_command);
+        bool init_is_check = (std::string_view{init_name}.substr(underscore_pos + 1) == "check");
+        return ConditionTypeInfo{raw_name_, std::move(init_name), std::move(init_command), init_is_check};
+    };
+
+    switch (type_)
+    {
+        case SELECT_FILTER:
+        {
+            static const ConditionTypeInfo info = make_info("SELECT_FILTER");
+            return info;
+        }
+#if 0 /// Row-level security for INSERT, UPDATE, DELETE is not implemented yet.
+        case INSERT_CHECK:
+        {
+            static const ConditionTypeInfo info = make_info("INSERT_CHECK");
+            return info;
+        }
+        case UPDATE_FILTER:
+        {
+            static const ConditionTypeInfo info = make_info("UPDATE_FILTER");
+            return info;
+        }
+        case UPDATE_CHECK:
+        {
+            static const ConditionTypeInfo info = make_info("UPDATE_CHECK");
+            return info;
+        }
+        case DELETE_FILTER:
+        {
+            static const ConditionTypeInfo info = make_info("DELETE_FILTER");
+            return info;
+        }
+#endif
+        case MAX_CONDITION_TYPE: break;
+    }
+    throw Exception("Unknown type: " + std::to_string(static_cast<size_t>(type_)), ErrorCodes::LOGICAL_ERROR);
+}
+
+inline String toString(RowPolicy::ConditionType type)
+{
+    return RowPolicy::ConditionTypeInfo::get(type).raw_name;
+}
+
 }

src/Access/RowPolicyCache.cpp

@@ -57,6 +57,7 @@ void RowPolicyCache::PolicyInfo::setPolicy(const RowPolicyPtr & policy_)
 {
     policy = policy_;
     roles = &policy->to_roles;
+    database_and_table_name = std::make_shared<std::pair<String, String>>(policy->getDatabase(), policy->getTableName());
 
     for (auto type : ext::range(0, MAX_CONDITION_TYPE))
     {
@@ -84,7 +85,7 @@ void RowPolicyCache::PolicyInfo::setPolicy(const RowPolicyPtr & policy_)
         {
             tryLogCurrentException(
                 &Poco::Logger::get("RowPolicy"),
-                String("Could not parse the condition ") + RowPolicy::conditionTypeToString(type) + " of row policy "
+                String("Could not parse the condition ") + toString(type) + " of row policy "
                     + backQuote(policy->getName()));
         }
     }
@@ -196,43 +197,45 @@ void RowPolicyCache::mixConditions()
 void RowPolicyCache::mixConditionsFor(EnabledRowPolicies & enabled)
 {
     /// `mutex` is already locked.
-    struct Mixers
+
-    {
-        ConditionsMixer mixers[MAX_CONDITION_TYPE];
-        std::vector<UUID> policy_ids;
-    };
     using MapOfMixedConditions = EnabledRowPolicies::MapOfMixedConditions;
-    using DatabaseAndTableName = EnabledRowPolicies::DatabaseAndTableName;
+    using MixedConditionKey = EnabledRowPolicies::MixedConditionKey;
-    using DatabaseAndTableNameRef = EnabledRowPolicies::DatabaseAndTableNameRef;
     using Hash = EnabledRowPolicies::Hash;
 
-    std::unordered_map<DatabaseAndTableName, Mixers, Hash> map_of_mixers;
+    struct MixerWithNames
+    {
+        ConditionsMixer mixer;
+        std::shared_ptr<const std::pair<String, String>> database_and_table_name;
+    };
+
+    std::unordered_map<MixedConditionKey, MixerWithNames, Hash> map_of_mixers;
 
     for (const auto & [policy_id, info] : all_policies)
     {
         const auto & policy = *info.policy;
-        auto & mixers = map_of_mixers[std::pair{policy.getDatabase(), policy.getTableName()}];
+        bool match = info.roles->match(enabled.params.user_id, enabled.params.enabled_roles);
-        if (info.roles->match(enabled.params.user_id, enabled.params.enabled_roles))
+        MixedConditionKey key;
+        key.database = info.database_and_table_name->first;
+        key.table_name = info.database_and_table_name->second;
+        for (auto type : ext::range(0, MAX_CONDITION_TYPE))
         {
-            mixers.policy_ids.push_back(policy_id);
+            if (info.parsed_conditions[type])
-            for (auto type : ext::range(0, MAX_CONDITION_TYPE))
+            {
-                if (info.parsed_conditions[type])
+                key.condition_type = type;
-                    mixers.mixers[type].add(info.parsed_conditions[type], policy.isRestrictive());
+                auto & mixer = map_of_mixers[key];
+                mixer.database_and_table_name = info.database_and_table_name;
+                if (match)
+                    mixer.mixer.add(info.parsed_conditions[type], policy.isRestrictive());
+            }
         }
     }
 
     auto map_of_mixed_conditions = boost::make_shared<MapOfMixedConditions>();
-    for (auto & [database_and_table_name, mixers] : map_of_mixers)
+    for (auto & [key, mixer] : map_of_mixers)
     {
-        auto database_and_table_name_keeper = std::make_unique<DatabaseAndTableName>();
+        auto & mixed_condition = (*map_of_mixed_conditions)[key];
-        database_and_table_name_keeper->first = database_and_table_name.first;
+        mixed_condition.database_and_table_name = mixer.database_and_table_name;
-        database_and_table_name_keeper->second = database_and_table_name.second;
+        mixed_condition.ast = std::move(mixer.mixer).getResult();
-        auto & mixed_conditions = (*map_of_mixed_conditions)[DatabaseAndTableNameRef{database_and_table_name_keeper->first,
-                                                                                     database_and_table_name_keeper->second}];
-        mixed_conditions.database_and_table_name_keeper = std::move(database_and_table_name_keeper);
-        mixed_conditions.policy_ids = std::move(mixers.policy_ids);
-        for (auto type : ext::range(0, MAX_CONDITION_TYPE))
-            mixed_conditions.mixed_conditions[type] = std::move(mixers.mixers[type]).getResult();
     }
 
     enabled.map_of_mixed_conditions.store(map_of_mixed_conditions);

src/Access/RowPolicyCache.h

@@ -21,8 +21,6 @@ public:
     std::shared_ptr<const EnabledRowPolicies> getEnabledRowPolicies(const UUID & user_id, const boost::container::flat_set<UUID> & enabled_roles);
 
 private:
-    using ParsedConditions = EnabledRowPolicies::ParsedConditions;
-
     struct PolicyInfo
     {
         PolicyInfo(const RowPolicyPtr & policy_) { setPolicy(policy_); }
@@ -30,7 +28,8 @@ private:
 
         RowPolicyPtr policy;
         const ExtendedRoleSet * roles = nullptr;
-        ParsedConditions parsed_conditions;
+        std::shared_ptr<const std::pair<String, String>> database_and_table_name;
+        ASTPtr parsed_conditions[RowPolicy::MAX_CONDITION_TYPE];
     };
 
     void ensureAllRowPoliciesRead();

src/Functions/currentRowPolicies.cpp

@@ -1,237 +0,0 @@
-#include <Functions/IFunction.h>
-#include <Functions/FunctionFactory.h>
-#include <DataTypes/DataTypeArray.h>
-#include <DataTypes/DataTypeString.h>
-#include <DataTypes/DataTypeTuple.h>
-#include <DataTypes/DataTypeUUID.h>
-#include <Columns/ColumnArray.h>
-#include <Columns/ColumnConst.h>
-#include <Columns/ColumnString.h>
-#include <Columns/ColumnTuple.h>
-#include <Interpreters/Context.h>
-#include <Access/EnabledRowPolicies.h>
-#include <Access/AccessControlManager.h>
-#include <ext/range.h>
-#include <IO/WriteHelpers.h>
-
-namespace DB
-{
-namespace ErrorCodes
-{
-    extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
-    extern const int ILLEGAL_TYPE_OF_ARGUMENT;
-}
-
-
-/// The currentRowPolicies() function can be called with 0..2 arguments:
-/// currentRowPolicies() returns array of tuples (database, table_name, row_policy_name) for all the row policies applied for the current user;
-/// currentRowPolicies(table_name) is equivalent to currentRowPolicies(currentDatabase(), table_name);
-/// currentRowPolicies(database, table_name) returns array of names of the row policies applied to a specific table and for the current user.
-class FunctionCurrentRowPolicies : public IFunction
-{
-public:
-    static constexpr auto name = "currentRowPolicies";
-
-    static FunctionPtr create(const Context & context_) { return std::make_shared<FunctionCurrentRowPolicies>(context_); }
-    explicit FunctionCurrentRowPolicies(const Context & context_) : context(context_) {}
-
-    String getName() const override { return name; }
-    size_t getNumberOfArguments() const override { return 0; }
-    bool isVariadic() const override { return true; }
-
-    void checkNumberOfArgumentsIfVariadic(size_t number_of_arguments) const override
-    {
-        if (number_of_arguments > 2)
-            throw Exception("Number of arguments for function " + String(name) + " doesn't match: passed "
-                            + toString(number_of_arguments) + ", should be 0..2",
-                            ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
-    }
-
-    DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
-    {
-        if (arguments.empty())
-            return std::make_shared<DataTypeArray>(std::make_shared<DataTypeTuple>(
-                DataTypes{std::make_shared<DataTypeString>(), std::make_shared<DataTypeString>(), std::make_shared<DataTypeString>()}));
-        else
-            return std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>());
-    }
-
-    bool isDeterministic() const override { return false; }
-
-    void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result_pos, size_t input_rows_count) override
-    {
-        if (arguments.empty())
-        {
-            auto database_column = ColumnString::create();
-            auto table_name_column = ColumnString::create();
-            auto policy_name_column = ColumnString::create();
-            if (auto policies = context.getRowPolicies())
-            {
-                for (const auto & policy_id : policies->getCurrentPolicyIDs())
-                {
-                    const auto policy = context.getAccessControlManager().tryRead<RowPolicy>(policy_id);
-                    if (policy)
-                    {
-                        const String database = policy->getDatabase();
-                        const String table_name = policy->getTableName();
-                        const String policy_name = policy->getShortName();
-                        database_column->insertData(database.data(), database.length());
-                        table_name_column->insertData(table_name.data(), table_name.length());
-                        policy_name_column->insertData(policy_name.data(), policy_name.length());
-                    }
-                }
-            }
-            auto offset_column = ColumnArray::ColumnOffsets::create();
-            offset_column->insertValue(policy_name_column->size());
-            block.getByPosition(result_pos).column = ColumnConst::create(
-                ColumnArray::create(
-                    ColumnTuple::create(Columns{std::move(database_column), std::move(table_name_column), std::move(policy_name_column)}),
-                    std::move(offset_column)),
-                input_rows_count);
-            return;
-        }
-
-        const IColumn * database_column = nullptr;
-        if (arguments.size() == 2)
-        {
-            const auto & database_column_with_type = block.getByPosition(arguments[0]);
-            if (!isStringOrFixedString(database_column_with_type.type))
-                throw Exception{"The first argument of function " + String(name)
-                                    + " should be a string containing database name, illegal type: "
-                                    + database_column_with_type.type->getName(),
-                                ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
-            database_column = database_column_with_type.column.get();
-        }
-
-        const auto & table_name_column_with_type = block.getByPosition(arguments[arguments.size() - 1]);
-        if (!isStringOrFixedString(table_name_column_with_type.type))
-            throw Exception{"The" + String(database_column ? " last" : "") + " argument of function " + String(name)
-                                + " should be a string containing table name, illegal type: " + table_name_column_with_type.type->getName(),
-                            ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
-        const IColumn * table_name_column = table_name_column_with_type.column.get();
-
-        auto policy_name_column = ColumnString::create();
-        auto offset_column = ColumnArray::ColumnOffsets::create();
-        for (const auto i : ext::range(0, input_rows_count))
-        {
-            String database = database_column ? database_column->getDataAt(i).toString() : context.getCurrentDatabase();
-            String table_name = table_name_column->getDataAt(i).toString();
-            if (auto policies = context.getRowPolicies())
-            {
-                for (const auto & policy_id : policies->getCurrentPolicyIDs(database, table_name))
-                {
-                    const auto policy = context.getAccessControlManager().tryRead<RowPolicy>(policy_id);
-                    if (policy)
-                    {
-                        const String policy_name = policy->getShortName();
-                        policy_name_column->insertData(policy_name.data(), policy_name.length());
-                    }
-                }
-            }
-            offset_column->insertValue(policy_name_column->size());
-        }
-
-        block.getByPosition(result_pos).column = ColumnArray::create(std::move(policy_name_column), std::move(offset_column));
-    }
-
-private:
-    const Context & context;
-};
-
-
-/// The currentRowPolicyIDs() function can be called with 0..2 arguments:
-/// currentRowPolicyIDs() returns array of IDs of all the row policies applied for the current user;
-/// currentRowPolicyIDs(table_name) is equivalent to currentRowPolicyIDs(currentDatabase(), table_name);
-/// currentRowPolicyIDs(database, table_name) returns array of IDs of the row policies applied to a specific table and for the current user.
-class FunctionCurrentRowPolicyIDs : public IFunction
-{
-public:
-    static constexpr auto name = "currentRowPolicyIDs";
-
-    static FunctionPtr create(const Context & context_) { return std::make_shared<FunctionCurrentRowPolicyIDs>(context_); }
-    explicit FunctionCurrentRowPolicyIDs(const Context & context_) : context(context_) {}
-
-    String getName() const override { return name; }
-    size_t getNumberOfArguments() const override { return 0; }
-    bool isVariadic() const override { return true; }
-
-    void checkNumberOfArgumentsIfVariadic(size_t number_of_arguments) const override
-    {
-        if (number_of_arguments > 2)
-            throw Exception("Number of arguments for function " + String(name) + " doesn't match: passed "
-                            + toString(number_of_arguments) + ", should be 0..2",
-                            ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
-    }
-
-    DataTypePtr getReturnTypeImpl(const DataTypes & /* arguments */) const override
-    {
-        return std::make_shared<DataTypeArray>(std::make_shared<DataTypeUUID>());
-    }
-
-    bool isDeterministic() const override { return false; }
-
-    void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result_pos, size_t input_rows_count) override
-    {
-        if (arguments.empty())
-        {
-            auto policy_id_column = ColumnVector<UInt128>::create();
-            if (auto policies = context.getRowPolicies())
-            {
-                for (const auto & policy_id : policies->getCurrentPolicyIDs())
-                     policy_id_column->insertValue(policy_id);
-            }
-            auto offset_column = ColumnArray::ColumnOffsets::create();
-            offset_column->insertValue(policy_id_column->size());
-            block.getByPosition(result_pos).column
-                = ColumnConst::create(ColumnArray::create(std::move(policy_id_column), std::move(offset_column)), input_rows_count);
-            return;
-        }
-
-        const IColumn * database_column = nullptr;
-        if (arguments.size() == 2)
-        {
-            const auto & database_column_with_type = block.getByPosition(arguments[0]);
-            if (!isStringOrFixedString(database_column_with_type.type))
-                throw Exception{"The first argument of function " + String(name)
-                                    + " should be a string containing database name, illegal type: "
-                                    + database_column_with_type.type->getName(),
-                                ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
-            database_column = database_column_with_type.column.get();
-        }
-
-        const auto & table_name_column_with_type = block.getByPosition(arguments[arguments.size() - 1]);
-        if (!isStringOrFixedString(table_name_column_with_type.type))
-            throw Exception{"The" + String(database_column ? " last" : "") + " argument of function " + String(name)
-                                + " should be a string containing table name, illegal type: " + table_name_column_with_type.type->getName(),
-                            ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
-        const IColumn * table_name_column = table_name_column_with_type.column.get();
-
-        auto policy_id_column = ColumnVector<UInt128>::create();
-        auto offset_column = ColumnArray::ColumnOffsets::create();
-        for (const auto i : ext::range(0, input_rows_count))
-        {
-            String database = database_column ? database_column->getDataAt(i).toString() : context.getCurrentDatabase();
-            String table_name = table_name_column->getDataAt(i).toString();
-            if (auto policies = context.getRowPolicies())
-            {
-                for (const auto & policy_id : policies->getCurrentPolicyIDs(database, table_name))
-                    policy_id_column->insertValue(policy_id);
-            }
-            offset_column->insertValue(policy_id_column->size());
-        }
-
-        block.getByPosition(result_pos).column = ColumnArray::create(std::move(policy_id_column), std::move(offset_column));
-    }
-
-private:
-    const Context & context;
-};
-
-
-void registerFunctionCurrentRowPolicies(FunctionFactory & factory)
-{
-    factory.registerFunction<FunctionCurrentRowPolicies>();
-    factory.registerFunction<FunctionCurrentRowPolicyIDs>();
-}
-
-}

src/Functions/registerFunctionsMiscellaneous.cpp

@@ -10,7 +10,6 @@ class FunctionFactory;
 void registerFunctionCurrentDatabase(FunctionFactory &);
 void registerFunctionCurrentUser(FunctionFactory &);
 void registerFunctionCurrentQuota(FunctionFactory &);
-void registerFunctionCurrentRowPolicies(FunctionFactory &);
 void registerFunctionHostName(FunctionFactory &);
 void registerFunctionFQDN(FunctionFactory &);
 void registerFunctionVisibleWidth(FunctionFactory &);
@@ -69,7 +68,6 @@ void registerFunctionsMiscellaneous(FunctionFactory & factory)
     registerFunctionCurrentDatabase(factory);
     registerFunctionCurrentUser(factory);
     registerFunctionCurrentQuota(factory);
-    registerFunctionCurrentRowPolicies(factory);
     registerFunctionHostName(factory);
     registerFunctionFQDN(factory);
     registerFunctionVisibleWidth(factory);

src/Functions/ya.make

@@ -128,7 +128,6 @@ SRCS(
     CRC.cpp
     currentDatabase.cpp
     currentQuota.cpp
-    currentRowPolicies.cpp
     currentUser.cpp
     dateDiff.cpp
     defaultValueOfArgumentType.cpp

src/Interpreters/Context.cpp

@@ -776,11 +776,6 @@ ASTPtr Context::getRowPolicyCondition(const String & database, const String & ta
     return getAccess()->getRowPolicyCondition(database, table_name, type, initial_condition);
 }
 
-std::shared_ptr<const EnabledRowPolicies> Context::getRowPolicies() const
-{
-    return getAccess()->getRowPolicies();
-}
-
 void Context::setInitialRowPolicy()
 {
     auto lock = getLock();

src/Interpreters/Context.h

@@ -278,7 +278,6 @@ public:
 
     std::shared_ptr<const ContextAccess> getAccess() const;
 
-    std::shared_ptr<const EnabledRowPolicies> getRowPolicies() const;
     ASTPtr getRowPolicyCondition(const String & database, const String & table_name, RowPolicy::ConditionType type) const;
 
     /// Sets an extra row policy based on `client_info.initial_user`, if it exists.

src/Interpreters/InterpreterCreateRowPolicyQuery.cpp

@@ -29,8 +29,12 @@ namespace
         if (query.is_restrictive)
             policy.setRestrictive(*query.is_restrictive);
 
-        for (const auto & [index, condition] : query.conditions)
+        for (auto condition_type : ext::range(RowPolicy::MAX_CONDITION_TYPE))
-            policy.conditions[index] = condition ? serializeAST(*condition) : String{};
+        {
+            const auto & condition = query.conditions[condition_type];
+            if (condition)
+                policy.conditions[condition_type] = *condition ? serializeAST(**condition) : String{};
+        }
 
         const ExtendedRoleSet * roles = nullptr;
         std::optional<ExtendedRoleSet> temp_role_set;

src/Interpreters/InterpreterFactory.cpp

@@ -16,11 +16,11 @@
 #include <Parsers/ASTSelectWithUnionQuery.h>
 #include <Parsers/ASTSetQuery.h>
 #include <Parsers/ASTSetRoleQuery.h>
+#include <Parsers/ASTShowAccessEntitiesQuery.h>
 #include <Parsers/ASTShowCreateAccessEntityQuery.h>
-#include <Parsers/ASTShowProcesslistQuery.h>
 #include <Parsers/ASTShowGrantsQuery.h>
 #include <Parsers/ASTShowQuotasQuery.h>
-#include <Parsers/ASTShowRowPoliciesQuery.h>
+#include <Parsers/ASTShowProcesslistQuery.h>
 #include <Parsers/ASTShowTablesQuery.h>
 #include <Parsers/ASTUseQuery.h>
 #include <Parsers/ASTExplainQuery.h>
@@ -50,12 +50,12 @@
 #include <Interpreters/InterpreterSelectWithUnionQuery.h>
 #include <Interpreters/InterpreterSetQuery.h>
 #include <Interpreters/InterpreterSetRoleQuery.h>
+#include <Interpreters/InterpreterShowAccessEntitiesQuery.h>
 #include <Interpreters/InterpreterShowCreateAccessEntityQuery.h>
-#include <Interpreters/InterpreterShowCreateQuery.h>
-#include <Interpreters/InterpreterShowProcesslistQuery.h>
 #include <Interpreters/InterpreterShowGrantsQuery.h>
 #include <Interpreters/InterpreterShowQuotasQuery.h>
-#include <Interpreters/InterpreterShowRowPoliciesQuery.h>
+#include <Interpreters/InterpreterShowCreateQuery.h>
+#include <Interpreters/InterpreterShowProcesslistQuery.h>
 #include <Interpreters/InterpreterShowTablesQuery.h>
 #include <Interpreters/InterpreterSystemQuery.h>
 #include <Interpreters/InterpreterUseQuery.h>
@@ -230,9 +230,9 @@ std::unique_ptr<IInterpreter> InterpreterFactory::get(ASTPtr & query, Context &
     {
         return std::make_unique<InterpreterShowQuotasQuery>(query, context);
     }
-    else if (query->as<ASTShowRowPoliciesQuery>())
+    else if (query->as<ASTShowAccessEntitiesQuery>())
     {
-        return std::make_unique<InterpreterShowRowPoliciesQuery>(query, context);
+        return std::make_unique<InterpreterShowAccessEntitiesQuery>(query, context);
     }
     else
         throw Exception("Unknown type of query: " + query->getID(), ErrorCodes::UNKNOWN_TYPE_OF_QUERY);

src/Interpreters/InterpreterShowAccessEntitiesQuery.cpp

@@ -0,0 +1,67 @@
+#include <Interpreters/InterpreterShowAccessEntitiesQuery.h>
+#include <Parsers/ASTShowAccessEntitiesQuery.h>
+#include <Parsers/formatAST.h>
+#include <Interpreters/executeQuery.h>
+#include <Common/StringUtils/StringUtils.h>
+#include <Common/quoteString.h>
+#include <Interpreters/Context.h>
+
+
+namespace DB
+{
+namespace ErrorCodes
+{
+    extern const int NOT_IMPLEMENTED;
+}
+
+using EntityType = IAccessEntity::Type;
+
+
+InterpreterShowAccessEntitiesQuery::InterpreterShowAccessEntitiesQuery(const ASTPtr & query_ptr_, Context & context_)
+    : query_ptr(query_ptr_), context(context_)
+{
+}
+
+
+BlockIO InterpreterShowAccessEntitiesQuery::execute()
+{
+    return executeQuery(getRewrittenQuery(), context, true);
+}
+
+
+String InterpreterShowAccessEntitiesQuery::getRewrittenQuery() const
+{
+    const auto & query = query_ptr->as<ASTShowAccessEntitiesQuery &>();
+    String origin;
+    String expr = "name";
+    String filter;
+
+    if (query.type == EntityType::ROW_POLICY)
+    {
+        origin = "row_policies";
+
+        const String & table_name = query.table_name;
+        String database;
+        bool show_short_name = false;
+        if (!table_name.empty())
+        {
+            database = query.database;
+            if (database.empty())
+                database = context.getCurrentDatabase();
+            show_short_name = true;
+        }
+
+        if (!table_name.empty())
+            filter = "database = " + quoteString(database) + " AND table = " + quoteString(table_name);
+
+        if (show_short_name)
+            expr = "short_name";
+    }
+    else
+        throw Exception(toString(query.type) + ": type is not supported by SHOW query", ErrorCodes::NOT_IMPLEMENTED);
+
+    return "SELECT " + expr + " from system." + origin +
+            (filter.empty() ? "" : " WHERE " + filter) + " ORDER BY " + expr;
+}
+
+}

src/Interpreters/InterpreterShowAccessEntitiesQuery.h

@@ -8,15 +8,14 @@ namespace DB
 {
 class Context;
 
-class InterpreterShowRowPoliciesQuery : public IInterpreter
+class InterpreterShowAccessEntitiesQuery : public IInterpreter
 {
 public:
-    InterpreterShowRowPoliciesQuery(const ASTPtr & query_ptr_, Context & context_);
+    InterpreterShowAccessEntitiesQuery(const ASTPtr & query_ptr_, Context & context_);
     BlockIO execute() override;
 
 private:
     String getRewrittenQuery() const;
-    String getResultDescription() const;
 
     ASTPtr query_ptr;
     Context & context;

src/Interpreters/InterpreterShowCreateAccessEntityQuery.cpp

@@ -167,14 +167,14 @@ namespace
         if (policy.isRestrictive())
             query->is_restrictive = policy.isRestrictive();
 
-        for (auto index : ext::range(RowPolicy::MAX_CONDITION_TYPE))
+        for (auto type : ext::range(RowPolicy::MAX_CONDITION_TYPE))
         {
-            const auto & condition = policy.conditions[index];
+            const auto & condition = policy.conditions[static_cast<size_t>(type)];
             if (!condition.empty())
             {
                 ParserExpression parser;
                 ASTPtr expr = parseQuery(parser, condition, 0, DBMS_DEFAULT_MAX_PARSER_DEPTH);
-                query->conditions.push_back(std::pair{index, expr});
+                query->conditions[static_cast<size_t>(type)] = expr;
             }
         }
 

src/Interpreters/InterpreterShowRowPoliciesQuery.cpp

@@ -1,69 +0,0 @@
-#include <Interpreters/InterpreterShowRowPoliciesQuery.h>
-#include <Parsers/ASTShowRowPoliciesQuery.h>
-#include <Parsers/formatAST.h>
-#include <Interpreters/executeQuery.h>
-#include <Common/StringUtils/StringUtils.h>
-#include <Common/quoteString.h>
-#include <Interpreters/Context.h>
-#include <ext/range.h>
-
-
-namespace DB
-{
-InterpreterShowRowPoliciesQuery::InterpreterShowRowPoliciesQuery(const ASTPtr & query_ptr_, Context & context_)
-    : query_ptr(query_ptr_), context(context_)
-{
-}
-
-
-BlockIO InterpreterShowRowPoliciesQuery::execute()
-{
-    return executeQuery(getRewrittenQuery(), context, true);
-}
-
-
-String InterpreterShowRowPoliciesQuery::getRewrittenQuery() const
-{
-    const auto & query = query_ptr->as<ASTShowRowPoliciesQuery &>();
-
-    const String & table_name = query.table_name;
-    String database;
-    if (!table_name.empty())
-    {
-        database = query.database;
-        if (database.empty())
-            database = context.getCurrentDatabase();
-    }
-
-    String filter;
-    if (query.current)
-    {
-        if (table_name.empty())
-            filter = "has(currentRowPolicyIDs(), id)";
-        else
-            filter = "has(currentRowPolicyIDs(" + quoteString(database) + ", " + quoteString(table_name) + "), id)";
-    }
-    else
-    {
-        if (!table_name.empty())
-            filter = "database = " + quoteString(database) + " AND table = " + quoteString(table_name);
-    }
-
-    String expr = table_name.empty() ? "name" : "short_name";
-
-    return "SELECT " + expr + " AS " + backQuote(getResultDescription()) + " from system.row_policies"
-            + (filter.empty() ? "" : " WHERE " + filter) + " ORDER BY " + expr;
-}
-
-
-String InterpreterShowRowPoliciesQuery::getResultDescription() const
-{
-    std::stringstream ss;
-    formatAST(*query_ptr, ss, false, true);
-    String desc = ss.str();
-    String prefix = "SHOW ";
-    if (startsWith(desc, prefix))
-        desc = desc.substr(prefix.length()); /// `desc` always starts with "SHOW ", so we can trim this prefix.
-    return desc;
-}
-}

src/Interpreters/ya.make

@@ -83,12 +83,12 @@ SRCS(
     InterpreterSelectWithUnionQuery.cpp
     InterpreterSetQuery.cpp
     InterpreterSetRoleQuery.cpp
+    InterpreterShowAccessEntitiesQuery.cpp
     InterpreterShowCreateAccessEntityQuery.cpp
     InterpreterShowCreateQuery.cpp
     InterpreterShowGrantsQuery.cpp
     InterpreterShowProcesslistQuery.cpp
     InterpreterShowQuotasQuery.cpp
-    InterpreterShowRowPoliciesQuery.cpp
     InterpreterShowTablesQuery.cpp
     InterpreterSystemQuery.cpp
     InterpreterUseQuery.cpp

src/Parsers/ASTCreateRowPolicyQuery.cpp

@@ -2,6 +2,7 @@
 #include <Parsers/ASTExtendedRoleSet.h>
 #include <Parsers/formatAST.h>
 #include <Common/quoteString.h>
+#include <ext/range.h>
 #include <boost/range/algorithm/transform.hpp>
 #include <sstream>
 
@@ -11,6 +12,9 @@ namespace DB
 namespace
 {
     using ConditionType = RowPolicy::ConditionType;
+    using ConditionTypeInfo = RowPolicy::ConditionTypeInfo;
+    constexpr auto MAX_CONDITION_TYPE = RowPolicy::MAX_CONDITION_TYPE;
+
 
     void formatRenameTo(const String & new_short_name, const IAST::FormatSettings & settings)
     {
@@ -28,90 +32,89 @@ namespace
 
     void formatConditionalExpression(const ASTPtr & expr, const IAST::FormatSettings & settings)
     {
-        if (!expr)
+        if (expr)
-        {
+            expr->format(settings);
+        else
             settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << " NONE" << (settings.hilite ? IAST::hilite_none : "");
-            return;
-        }
-        expr->format(settings);
     }
 
 
-    std::vector<std::pair<ConditionType, String>>
+    void formatCondition(const boost::container::flat_set<std::string_view> & commands, const String & filter, const String & check, bool alter, const IAST::FormatSettings & settings)
-    conditionalExpressionsToStrings(const std::vector<std::pair<ConditionType, ASTPtr>> & exprs, const IAST::FormatSettings & settings)
     {
-        std::vector<std::pair<ConditionType, String>> result;
+        settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << " FOR " << (settings.hilite ? IAST::hilite_none : "");
-        std::stringstream ss;
-        IAST::FormatSettings temp_settings(ss, settings);
-        boost::range::transform(exprs, std::back_inserter(result), [&](const std::pair<ConditionType, ASTPtr> & in)
-        {
-            formatConditionalExpression(in.second, temp_settings);
-            auto out = std::pair{in.first, ss.str()};
-            ss.str("");
-            return out;
-        });
-        return result;
-    }
-
-
-    void formatConditions(const char * op, const std::optional<String> & filter, const std::optional<String> & check, bool alter, const IAST::FormatSettings & settings)
-    {
-        if (op)
-        {
-            settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << " FOR" << (settings.hilite ? IAST::hilite_none : "");
-            settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << ' ' << op << (settings.hilite ? IAST::hilite_none : "");
-        }
-
-        if (filter)
-            settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << " USING " << (settings.hilite ? IAST::hilite_none : "") << *filter;
-
-        if (check && (alter || (check != filter)))
-            settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << " WITH CHECK " << (settings.hilite ? IAST::hilite_none : "") << *check;
-    }
-
-
-    void formatMultipleConditions(const std::vector<std::pair<ConditionType, ASTPtr>> & conditions, bool alter, const IAST::FormatSettings & settings)
-    {
-        std::optional<String> scond[RowPolicy::MAX_CONDITION_TYPE];
-        for (const auto & [index, scondition] : conditionalExpressionsToStrings(conditions, settings))
-            scond[index] = scondition;
-
-        if ((scond[RowPolicy::SELECT_FILTER] == scond[RowPolicy::UPDATE_FILTER])
-            && (scond[RowPolicy::UPDATE_FILTER] == scond[RowPolicy::DELETE_FILTER])
-            && (scond[RowPolicy::INSERT_CHECK] == scond[RowPolicy::UPDATE_CHECK])
-            && (scond[RowPolicy::SELECT_FILTER] || scond[RowPolicy::INSERT_CHECK]))
-        {
-            formatConditions(nullptr, scond[RowPolicy::SELECT_FILTER], scond[RowPolicy::INSERT_CHECK], alter, settings);
-            return;
-        }
-
         bool need_comma = false;
-        if (scond[RowPolicy::SELECT_FILTER])
+        for (const auto & command : commands)
         {
             if (std::exchange(need_comma, true))
-                settings.ostr << ',';
+                settings.ostr << ", ";
-            formatConditions("SELECT", scond[RowPolicy::SELECT_FILTER], {}, alter, settings);
+            settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << command << (settings.hilite ? IAST::hilite_none : "");
-        }
-        if (scond[RowPolicy::INSERT_CHECK])
-        {
-            if (std::exchange(need_comma, true))
-                settings.ostr << ',';
-            formatConditions("INSERT", {}, scond[RowPolicy::INSERT_CHECK], alter, settings);
-        }
-        if (scond[RowPolicy::UPDATE_FILTER] || scond[RowPolicy::UPDATE_CHECK])
-        {
-            if (std::exchange(need_comma, true))
-                settings.ostr << ',';
-            formatConditions("UPDATE", scond[RowPolicy::UPDATE_FILTER], scond[RowPolicy::UPDATE_CHECK], alter, settings);
-        }
-        if (scond[RowPolicy::DELETE_FILTER])
-        {
-            if (std::exchange(need_comma, true))
-                settings.ostr << ',';
-            formatConditions("DELETE", scond[RowPolicy::DELETE_FILTER], {}, alter, settings);
         }
+
+        if (!filter.empty())
+            settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << " USING " << (settings.hilite ? IAST::hilite_none : "") << filter;
+
+        if (!check.empty() && (alter || (check != filter)))
+            settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << " WITH CHECK " << (settings.hilite ? IAST::hilite_none : "") << check;
     }
 
+
+    void formatMultipleConditions(const std::array<std::optional<ASTPtr>, MAX_CONDITION_TYPE> & conditions, bool alter, const IAST::FormatSettings & settings)
+    {
+        std::array<String, MAX_CONDITION_TYPE> conditions_as_strings;
+        std::stringstream temp_sstream;
+        IAST::FormatSettings temp_settings(temp_sstream, settings);
+        for (auto condition_type : ext::range(MAX_CONDITION_TYPE))
+        {
+            const auto & condition = conditions[condition_type];
+            if (condition)
+            {
+                formatConditionalExpression(*condition, temp_settings);
+                conditions_as_strings[condition_type] = temp_sstream.str();
+                temp_sstream.str("");
+            }
+        }
+
+        boost::container::flat_set<std::string_view> commands;
+        String filter, check;
+
+        do
+        {
+            commands.clear();
+            filter.clear();
+            check.clear();
+
+            /// Collect commands using the same filter and check conditions.
+            for (auto condition_type : ext::range(MAX_CONDITION_TYPE))
+            {
+                const String & condition = conditions_as_strings[condition_type];
+                if (condition.empty())
+                    continue;
+                const auto & type_info = ConditionTypeInfo::get(condition_type);
+                if (type_info.is_check)
+                {
+                    if (check.empty())
+                        check = condition;
+                    else if (check != condition)
+                        continue;
+                }
+                else
+                {
+                    if (filter.empty())
+                        filter = condition;
+                    else if (filter != condition)
+                        continue;
+                }
+                commands.emplace(type_info.command);
+                conditions_as_strings[condition_type].clear(); /// Skip this condition on the next iteration.
+            }
+
+            if (!filter.empty() || !check.empty())
+                formatCondition(commands, filter, check, alter, settings);
+        }
+        while (!filter.empty() || !check.empty());
+    }
+
+
     void formatToRoles(const ASTExtendedRoleSet & roles, const IAST::FormatSettings & settings)
     {
         settings.ostr << (settings.hilite ? IAST::hilite_keyword : "") << " TO " << (settings.hilite ? IAST::hilite_none : "");

src/Parsers/ASTCreateRowPolicyQuery.h

@@ -3,8 +3,8 @@
 #include <Parsers/IAST.h>
 #include <Parsers/ASTQueryWithOnCluster.h>
 #include <Access/RowPolicy.h>
-#include <utility>
+#include <array>
-#include <vector>
+#include <optional>
 
 
 namespace DB
@@ -40,8 +40,7 @@ public:
     String new_short_name;
 
     std::optional<bool> is_restrictive;
-    using ConditionType = RowPolicy::ConditionType;
+    std::array<std::optional<ASTPtr>, RowPolicy::MAX_CONDITION_TYPE> conditions; /// `nullopt` means "not set", `nullptr` means set to NONE.
-    std::vector<std::pair<ConditionType, ASTPtr>> conditions;
 
     std::shared_ptr<ASTExtendedRoleSet> roles;
 

src/Parsers/ASTShowAccessEntitiesQuery.cpp

@@ -0,0 +1,37 @@
+#include <Parsers/ASTShowAccessEntitiesQuery.h>
+#include <Common/quoteString.h>
+
+
+namespace DB
+{
+namespace ErrorCodes
+{
+    extern const int NOT_IMPLEMENTED;
+}
+
+
+String ASTShowAccessEntitiesQuery::getID(char) const
+{
+    if (type == EntityType::ROW_POLICY)
+        return "SHOW ROW POLICIES query";
+    else
+        throw Exception(toString(type) + ": type is not supported by SHOW query", ErrorCodes::NOT_IMPLEMENTED);
+}
+
+void ASTShowAccessEntitiesQuery::formatQueryImpl(const FormatSettings & settings, FormatState &, FormatStateStacked) const
+{
+    if (type == EntityType::ROW_POLICY)
+        settings.ostr << (settings.hilite ? hilite_keyword : "") << "SHOW ROW POLICIES" << (settings.hilite ? hilite_none : "");
+    else
+        throw Exception(toString(type) + ": type is not supported by SHOW query", ErrorCodes::NOT_IMPLEMENTED);
+
+    if ((type == EntityType::ROW_POLICY) && !table_name.empty())
+    {
+        settings.ostr << (settings.hilite ? hilite_keyword : "") << " ON " << (settings.hilite ? hilite_none : "");
+        if (!database.empty())
+            settings.ostr << backQuoteIfNeed(database) << ".";
+        settings.ostr << backQuoteIfNeed(table_name);
+    }
+}
+
+}

src/Parsers/ASTShowAccessEntitiesQuery.h

@@ -1,20 +1,24 @@
 #pragma once
 
 #include <Parsers/ASTQueryWithOutput.h>
+#include <Access/IAccessEntity.h>
 
 
 namespace DB
 {
-/// SHOW [ROW] POLICIES [CURRENT] [ON [database.]table]
+
-class ASTShowRowPoliciesQuery : public ASTQueryWithOutput
+/// SHOW [ROW] POLICIES [ON [database.]table]
+class ASTShowAccessEntitiesQuery : public ASTQueryWithOutput
 {
 public:
-    bool current = false;
+    using EntityType = IAccessEntity::Type;
+
+    EntityType type;
     String database;
     String table_name;
 
-    String getID(char) const override { return "SHOW POLICIES query"; }
+    String getID(char) const override;
-    ASTPtr clone() const override { return std::make_shared<ASTShowRowPoliciesQuery>(*this); }
+    ASTPtr clone() const override { return std::make_shared<ASTShowAccessEntitiesQuery>(*this); }
 
 protected:
     void formatQueryImpl(const FormatSettings & settings, FormatState &, FormatStateStacked) const override;

src/Parsers/ASTShowRowPoliciesQuery.cpp

@@ -1,22 +0,0 @@
-#include <Parsers/ASTShowRowPoliciesQuery.h>
-#include <Common/quoteString.h>
-
-
-namespace DB
-{
-void ASTShowRowPoliciesQuery::formatQueryImpl(const FormatSettings & settings, FormatState &, FormatStateStacked) const
-{
-    settings.ostr << (settings.hilite ? hilite_keyword : "") << "SHOW POLICIES" << (settings.hilite ? hilite_none : "");
-
-    if (current)
-        settings.ostr << (settings.hilite ? hilite_keyword : "") << " CURRENT" << (settings.hilite ? hilite_none : "");
-
-    if (!table_name.empty())
-    {
-        settings.ostr << (settings.hilite ? hilite_keyword : "") << " ON " << (settings.hilite ? hilite_none : "");
-        if (!database.empty())
-            settings.ostr << backQuoteIfNeed(database) << ".";
-        settings.ostr << backQuoteIfNeed(table_name);
-    }
-}
-}

src/Parsers/ParserCreateRowPolicyQuery.cpp

@@ -8,18 +8,17 @@
 #include <Parsers/ExpressionListParsers.h>
 #include <Parsers/ExpressionElementParsers.h>
 #include <Parsers/ASTLiteral.h>
+#include <ext/range.h>
 
 
 namespace DB
 {
-namespace ErrorCodes
-{
-}
-
-
 namespace
 {
     using ConditionType = RowPolicy::ConditionType;
+    using ConditionTypeInfo = RowPolicy::ConditionTypeInfo;
+    constexpr auto MAX_CONDITION_TYPE = RowPolicy::MAX_CONDITION_TYPE;
+
 
     bool parseRenameTo(IParserBase::Pos & pos, Expected & expected, String & new_short_name)
     {
@@ -73,111 +72,93 @@ namespace
         });
     }
 
-    bool parseConditions(IParserBase::Pos & pos, Expected & expected, bool alter, std::vector<std::pair<ConditionType, ASTPtr>> & conditions)
+    bool parseConditions(
+        IParserBase::Pos & pos, Expected & expected, bool alter, std::array<std::optional<ASTPtr>, MAX_CONDITION_TYPE> & conditions)
     {
         return IParserBase::wrapParseImpl(pos, [&]
         {
-            static constexpr char select_op[] = "SELECT";
+            boost::container::flat_set<std::string_view> commands;
-            static constexpr char insert_op[] = "INSERT";
+
-            static constexpr char update_op[] = "UPDATE";
+            auto add_all_commands = [&]
-            static constexpr char delete_op[] = "DELETE";
+            {
-            std::vector<const char *> ops;
+                for (auto condition_type : ext::range(MAX_CONDITION_TYPE))
+                {
+                    const std::string_view & command = ConditionTypeInfo::get(condition_type).command;
+                    commands.emplace(command);
+                }
+            };
 
             if (ParserKeyword{"FOR"}.ignore(pos, expected))
             {
                 do
                 {
-                    if (ParserKeyword{"SELECT"}.ignore(pos, expected))
+                    size_t old_size = commands.size();
-                        ops.push_back(select_op);
+                    if (ParserKeyword{"ALL"}.ignore(pos, expected))
-#if 0 /// INSERT, UPDATE, DELETE are not supported yet
-                    else if (ParserKeyword{"INSERT"}.ignore(pos, expected))
-                        ops.push_back(insert_op);
-                    else if (ParserKeyword{"UPDATE"}.ignore(pos, expected))
-                        ops.push_back(update_op);
-                    else if (ParserKeyword{"DELETE"}.ignore(pos, expected))
-                        ops.push_back(delete_op);
-                    else if (ParserKeyword{"ALL"}.ignore(pos, expected))
                     {
+                        add_all_commands();
                     }
-#endif
                     else
+                    {
+                        for (auto condition_type : ext::range(MAX_CONDITION_TYPE))
+                        {
+                            const std::string_view & command = ConditionTypeInfo::get(condition_type).command;
+                            if (ParserKeyword{command.data()}.ignore(pos, expected))
+                            {
+                                commands.emplace(command);
+                                break;
+                            }
+                        }
+                    }
+                    if (commands.size() == old_size)
                         return false;
                 }
                 while (ParserToken{TokenType::Comma}.ignore(pos, expected));
             }
 
-            if (ops.empty())
-            {
-                ops.push_back(select_op);
-#if 0 /// INSERT, UPDATE, DELETE are not supported yet
-                ops.push_back(insert_op);
-                ops.push_back(update_op);
-                ops.push_back(delete_op);
-#endif
-            }
-
             std::optional<ASTPtr> filter;
             std::optional<ASTPtr> check;
-            bool keyword_using = false, keyword_with_check = false;
             if (ParserKeyword{"USING"}.ignore(pos, expected))
             {
-                keyword_using = true;
                 if (!parseConditionalExpression(pos, expected, filter))
                     return false;
             }
-#if 0 /// INSERT, UPDATE, DELETE are not supported yet
             if (ParserKeyword{"WITH CHECK"}.ignore(pos, expected))
             {
-                keyword_with_check = true;
                 if (!parseConditionalExpression(pos, expected, check))
                     return false;
             }
-#endif
+
-            if (!keyword_using && !keyword_with_check)
+            if (!filter && !check)
                 return false;
 
-            if (filter && !check && !alter)
+            if (commands.empty())
+                add_all_commands();
+
+            if (!check && !alter)
                 check = filter;
 
-            auto set_condition = [&](ConditionType index, const ASTPtr & condition)
+            for (auto condition_type : ext::range(MAX_CONDITION_TYPE))
             {
-                auto it = std::find_if(conditions.begin(), conditions.end(), [index](const std::pair<ConditionType, ASTPtr> & element)
+                const auto & type_info = ConditionTypeInfo::get(condition_type);
+                if (commands.count(type_info.command))
                 {
-                    return element.first == index;
+                    if (type_info.is_check && check)
-                });
+                        conditions[condition_type] = check;
-                if (it == conditions.end())
+                    else if (filter)
-                    it = conditions.insert(conditions.end(), std::pair<ConditionType, ASTPtr>{index, nullptr});
+                        conditions[condition_type] = filter;
-                it->second = condition;
-            };
-
-            for (const auto & op : ops)
-            {
-                if ((op == select_op) && filter)
-                    set_condition(RowPolicy::SELECT_FILTER, *filter);
-                else if ((op == insert_op) && check)
-                    set_condition(RowPolicy::INSERT_CHECK, *check);
-                else if (op == update_op)
-                {
-                    if (filter)
-                        set_condition(RowPolicy::UPDATE_FILTER, *filter);
-                    if (check)
-                        set_condition(RowPolicy::UPDATE_CHECK, *check);
                 }
-                else if ((op == delete_op) && filter)
-                    set_condition(RowPolicy::DELETE_FILTER, *filter);
-                else
-                    __builtin_unreachable();
             }
 
             return true;
         });
     }
 
-    bool parseMultipleConditions(IParserBase::Pos & pos, Expected & expected, bool alter, std::vector<std::pair<ConditionType, ASTPtr>> & conditions)
+    bool parseMultipleConditions(
+        IParserBase::Pos & pos, Expected & expected, bool alter, std::array<std::optional<ASTPtr>, MAX_CONDITION_TYPE> & conditions)
     {
         return IParserBase::wrapParseImpl(pos, [&]
         {
-            std::vector<std::pair<ConditionType, ASTPtr>> res_conditions;
+            std::array<std::optional<ASTPtr>, MAX_CONDITION_TYPE> res_conditions;
             do
             {
                 if (!parseConditions(pos, expected, alter, res_conditions))
@@ -256,7 +237,7 @@ bool ParserCreateRowPolicyQuery::parseImpl(Pos & pos, ASTPtr & node, Expected &
 
     String new_short_name;
     std::optional<bool> is_restrictive;
-    std::vector<std::pair<ConditionType, ASTPtr>> conditions;
+    std::array<std::optional<ASTPtr>, MAX_CONDITION_TYPE> conditions;
     String cluster;
 
     while (true)

src/Parsers/ParserQueryWithOutput.cpp

@@ -14,10 +14,10 @@
 #include <Parsers/ParserWatchQuery.h>
 #include <Parsers/ParserSetQuery.h>
 #include <Parsers/ASTExplainQuery.h>
-#include <Parsers/ParserShowGrantsQuery.h>
+#include <Parsers/ParserShowAccessEntitiesQuery.h>
 #include <Parsers/ParserShowCreateAccessEntityQuery.h>
+#include <Parsers/ParserShowGrantsQuery.h>
 #include <Parsers/ParserShowQuotasQuery.h>
-#include <Parsers/ParserShowRowPoliciesQuery.h>
 
 
 namespace DB
@@ -38,10 +38,10 @@ bool ParserQueryWithOutput::parseImpl(Pos & pos, ASTPtr & node, Expected & expec
     ParserOptimizeQuery optimize_p;
     ParserKillQueryQuery kill_query_p;
     ParserWatchQuery watch_p;
+    ParserShowAccessEntitiesQuery show_access_entities_p;
     ParserShowCreateAccessEntityQuery show_create_access_entity_p;
     ParserShowGrantsQuery show_grants_p;
     ParserShowQuotasQuery show_quotas_p;
-    ParserShowRowPoliciesQuery show_row_policies_p;
 
     ASTPtr query;
 
@@ -70,9 +70,9 @@ bool ParserQueryWithOutput::parseImpl(Pos & pos, ASTPtr & node, Expected & expec
         || kill_query_p.parse(pos, query, expected)
         || optimize_p.parse(pos, query, expected)
         || watch_p.parse(pos, query, expected)
+        || show_access_entities_p.parse(pos, query, expected)
         || show_grants_p.parse(pos, query, expected)
-        || show_quotas_p.parse(pos, query, expected)
+        || show_quotas_p.parse(pos, query, expected);
-        || show_row_policies_p.parse(pos, query, expected);
 
     if (!parsed)
         return false;

src/Parsers/ParserShowAccessEntitiesQuery.cpp

@@ -1,5 +1,5 @@
-#include <Parsers/ParserShowRowPoliciesQuery.h>
+#include <Parsers/ParserShowAccessEntitiesQuery.h>
-#include <Parsers/ASTShowRowPoliciesQuery.h>
+#include <Parsers/ASTShowAccessEntitiesQuery.h>
 #include <Parsers/CommonParsers.h>
 #include <Parsers/parseDatabaseAndTableName.h>
 
@@ -8,6 +8,8 @@ namespace DB
 {
 namespace
 {
+    using EntityType = IAccessEntity::Type;
+
     bool parseONDatabaseAndTableName(IParserBase::Pos & pos, Expected & expected, String & database, String & table_name)
     {
         return IParserBase::wrapParseImpl(pos, [&]
@@ -20,21 +22,21 @@ namespace
 }
 
 
-bool ParserShowRowPoliciesQuery::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
+bool ParserShowAccessEntitiesQuery::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
 {
     if (!ParserKeyword{"SHOW POLICIES"}.ignore(pos, expected) && !ParserKeyword{"SHOW ROW POLICIES"}.ignore(pos, expected))
         return false;
 
-    bool current = ParserKeyword{"CURRENT"}.ignore(pos, expected);
-
     String database, table_name;
     parseONDatabaseAndTableName(pos, expected, database, table_name);
 
-    auto query = std::make_shared<ASTShowRowPoliciesQuery>();
+    auto query = std::make_shared<ASTShowAccessEntitiesQuery>();
-    query->current = current;
+    node = query;
+
+    query->type = EntityType::ROW_POLICY;
     query->database = std::move(database);
     query->table_name = std::move(table_name);
-    node = query;
+
     return true;
 }
 }

src/Parsers/ParserShowAccessEntitiesQuery.h

@@ -6,12 +6,12 @@
 namespace DB
 {
 /** Parses queries like
-  * SHOW [ROW] POLICIES [CURRENT] [ON [database.]table]
+  * SHOW [ROW] POLICIES [ON [database.]table]
   */
-class ParserShowRowPoliciesQuery : public IParserBase
+class ParserShowAccessEntitiesQuery : public IParserBase
 {
 protected:
-    const char * getName() const override { return "SHOW POLICIES query"; }
+    const char * getName() const override { return "ShowAccessEntitiesQuery"; }
     bool parseImpl(Pos & pos, ASTPtr & node, Expected & expected) override;
 };
 }

src/Parsers/ya.make

@@ -42,10 +42,10 @@ SRCS(
     ASTSelectWithUnionQuery.cpp
     ASTSetRoleQuery.cpp
     ASTSettingsProfileElement.cpp
+    ASTShowAccessEntitiesQuery.cpp
     ASTShowCreateAccessEntityQuery.cpp
     ASTShowGrantsQuery.cpp
     ASTShowQuotasQuery.cpp
-    ASTShowRowPoliciesQuery.cpp
     ASTShowTablesQuery.cpp
     ASTSubquery.cpp
     ASTSystemQuery.cpp
@@ -94,10 +94,10 @@ SRCS(
     ParserSetQuery.cpp
     ParserSetRoleQuery.cpp
     ParserSettingsProfileElement.cpp
+    ParserShowAccessEntitiesQuery.cpp
     ParserShowCreateAccessEntityQuery.cpp
     ParserShowGrantsQuery.cpp
     ParserShowQuotasQuery.cpp
-    ParserShowRowPoliciesQuery.cpp
     ParserShowTablesQuery.cpp
     ParserSystemQuery.cpp
     ParserTablePropertiesQuery.cpp

src/Storages/System/StorageSystemRowPolicies.cpp

@@ -2,32 +2,52 @@
 #include <DataTypes/DataTypeString.h>
 #include <DataTypes/DataTypesNumber.h>
 #include <DataTypes/DataTypeUUID.h>
-#include <DataTypes/DataTypeDateTime.h>
 #include <DataTypes/DataTypeNullable.h>
+#include <DataTypes/DataTypeArray.h>
+#include <Columns/ColumnString.h>
+#include <Columns/ColumnsNumber.h>
+#include <Columns/ColumnArray.h>
+#include <Columns/ColumnNullable.h>
 #include <Interpreters/Context.h>
+#include <Parsers/ASTExtendedRoleSet.h>
 #include <Access/AccessControlManager.h>
 #include <Access/RowPolicy.h>
 #include <Access/AccessFlags.h>
 #include <ext/range.h>
+#include <boost/range/algorithm_ext/push_back.hpp>
 
 
 namespace DB
 {
+using ConditionTypeInfo = RowPolicy::ConditionTypeInfo;
+constexpr auto MAX_CONDITION_TYPE = RowPolicy::MAX_CONDITION_TYPE;
+
+
 NamesAndTypesList StorageSystemRowPolicies::getNamesAndTypes()
 {
     NamesAndTypesList names_and_types{
+        {"name", std::make_shared<DataTypeString>()},
+        {"short_name", std::make_shared<DataTypeString>()},
         {"database", std::make_shared<DataTypeString>()},
         {"table", std::make_shared<DataTypeString>()},
-        {"short_name", std::make_shared<DataTypeString>()},
-        {"name", std::make_shared<DataTypeString>()},
         {"id", std::make_shared<DataTypeUUID>()},
         {"source", std::make_shared<DataTypeString>()},
-        {"restrictive", std::make_shared<DataTypeUInt8>()},
     };
 
-    for (auto index : ext::range(RowPolicy::MAX_CONDITION_TYPE))
+    for (auto type : ext::range(MAX_CONDITION_TYPE))
-        names_and_types.push_back({RowPolicy::conditionTypeToColumnName(index), std::make_shared<DataTypeString>()});
+    {
+        const String & column_name = ConditionTypeInfo::get(type).name;
+        names_and_types.push_back({column_name, std::make_shared<DataTypeNullable>(std::make_shared<DataTypeString>())});
+    }
 
+    NamesAndTypesList extra_names_and_types{
+        {"is_restrictive", std::make_shared<DataTypeUInt8>()},
+        {"apply_to_all", std::make_shared<DataTypeUInt8>()},
+        {"apply_to_list", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>())},
+        {"apply_to_except", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>())}
+    };
+
+    boost::range::push_back(names_and_types, std::move(extra_names_and_types));
     return names_and_types;
 }
 
@@ -38,24 +58,83 @@ void StorageSystemRowPolicies::fillData(MutableColumns & res_columns, const Cont
     const auto & access_control = context.getAccessControlManager();
     std::vector<UUID> ids = access_control.findAll<RowPolicy>();
 
+    size_t column_index = 0;
+    auto & column_name = assert_cast<ColumnString &>(*res_columns[column_index++]);
+    auto & column_short_name = assert_cast<ColumnString &>(*res_columns[column_index++]);
+    auto & column_database = assert_cast<ColumnString &>(*res_columns[column_index++]);
+    auto & column_table = assert_cast<ColumnString &>(*res_columns[column_index++]);
+    auto & column_id = assert_cast<ColumnUInt128 &>(*res_columns[column_index++]).getData();
+    auto & column_storage = assert_cast<ColumnString &>(*res_columns[column_index++]);
+
+    ColumnString * column_condition[MAX_CONDITION_TYPE];
+    NullMap * column_condition_null_map[MAX_CONDITION_TYPE];
+    for (auto condition_type : ext::range(MAX_CONDITION_TYPE))
+    {
+        column_condition[condition_type] = &assert_cast<ColumnString &>(assert_cast<ColumnNullable &>(*res_columns[column_index]).getNestedColumn());
+        column_condition_null_map[condition_type] = &assert_cast<ColumnNullable &>(*res_columns[column_index++]).getNullMapData();
+    }
+
+    auto & column_is_restrictive = assert_cast<ColumnUInt8 &>(*res_columns[column_index++]).getData();
+    auto & column_apply_to_all = assert_cast<ColumnUInt8 &>(*res_columns[column_index++]).getData();
+    auto & column_apply_to_list = assert_cast<ColumnString &>(assert_cast<ColumnArray &>(*res_columns[column_index]).getData());
+    auto & column_apply_to_list_offsets = assert_cast<ColumnArray &>(*res_columns[column_index++]).getOffsets();
+    auto & column_apply_to_except = assert_cast<ColumnString &>(assert_cast<ColumnArray &>(*res_columns[column_index]).getData());
+    auto & column_apply_to_except_offsets = assert_cast<ColumnArray &>(*res_columns[column_index++]).getOffsets();
+
+    auto add_row = [&](const String & name,
+                       const RowPolicy::NameParts & name_parts,
+                       const UUID & id,
+                       const String & storage_name,
+                       const std::array<String, MAX_CONDITION_TYPE> & conditions,
+                       bool is_restrictive,
+                       const ExtendedRoleSet & apply_to)
+    {
+        column_name.insertData(name.data(), name.length());
+        column_short_name.insertData(name_parts.short_name.data(), name_parts.short_name.length());
+        column_database.insertData(name_parts.database.data(), name_parts.database.length());
+        column_table.insertData(name_parts.table_name.data(), name_parts.table_name.length());
+        column_id.push_back(id);
+        column_storage.insertData(storage_name.data(), storage_name.length());
+
+        for (auto condition_type : ext::range(MAX_CONDITION_TYPE))
+        {
+            const String & condition = conditions[condition_type];
+            if (condition.empty())
+            {
+                column_condition[condition_type]->insertDefault();
+                column_condition_null_map[condition_type]->push_back(true);
+            }
+            else
+            {
+                column_condition[condition_type]->insertData(condition.data(), condition.length());
+                column_condition_null_map[condition_type]->push_back(false);
+            }
+        }
+
+        column_is_restrictive.push_back(is_restrictive);
+
+        auto apply_to_ast = apply_to.toASTWithNames(access_control);
+        column_apply_to_all.push_back(apply_to_ast->all);
+
+        for (const auto & role_name : apply_to_ast->names)
+            column_apply_to_list.insertData(role_name.data(), role_name.length());
+        column_apply_to_list_offsets.push_back(column_apply_to_list.size());
+
+        for (const auto & role_name : apply_to_ast->except_names)
+            column_apply_to_except.insertData(role_name.data(), role_name.length());
+        column_apply_to_except_offsets.push_back(column_apply_to_except.size());
+    };
+
     for (const auto & id : ids)
     {
         auto policy = access_control.tryRead<RowPolicy>(id);
         if (!policy)
             continue;
         const auto * storage = access_control.findStorage(id);
+        if (!storage)
+            continue;
 
-        size_t i = 0;
+        add_row(policy->getName(), policy->getNameParts(), id, storage->getStorageName(), policy->conditions, policy->isRestrictive(), policy->to_roles);
-        res_columns[i++]->insert(policy->getDatabase());
-        res_columns[i++]->insert(policy->getTableName());
-        res_columns[i++]->insert(policy->getShortName());
-        res_columns[i++]->insert(policy->getName());
-        res_columns[i++]->insert(id);
-        res_columns[i++]->insert(storage ? storage->getStorageName() : "");
-        res_columns[i++]->insert(policy->isRestrictive());
-
-        for (auto index : ext::range(RowPolicy::MAX_CONDITION_TYPE))
-            res_columns[i++]->insert(policy->conditions[index]);
     }
 }
 }

tests/integration/test_row_policy/configs/config.d/remote_servers.xml

@@ -3,13 +3,13 @@
         <test_local_cluster>
             <shard>
                 <replica>
-                    <host>instance1</host>
+                    <host>node</host>
                     <port>9000</port>
                 </replica>
             </shard>
             <shard>
                 <replica>
-                    <host>instance2</host>
+                    <host>node2</host>
                     <port>9000</port>
                 </replica>
             </shard>

tests/integration/test_row_policy/test.py

@@ -1,21 +1,22 @@
 import pytest
 from helpers.cluster import ClickHouseCluster
-from helpers.test_tools import assert_eq_with_retry
+from helpers.test_tools import assert_eq_with_retry, TSV
 import os
 import re
 import time
 
 cluster = ClickHouseCluster(__file__)
-instance = cluster.add_instance('instance1', config_dir="configs", with_zookeeper=True)
+node = cluster.add_instance('node', config_dir="configs", with_zookeeper=True)
-instance2 = cluster.add_instance('instance2', config_dir="configs", with_zookeeper=True)
+node2 = cluster.add_instance('node2', config_dir="configs", with_zookeeper=True)
+nodes = [node, node2]
 
 
 def copy_policy_xml(local_file_name, reload_immediately = True):
     script_dir = os.path.dirname(os.path.realpath(__file__))
-    instance.copy_file_to_container(os.path.join(script_dir, local_file_name), '/etc/clickhouse-server/users.d/row_policy.xml')
+    for current_node in nodes:
-    instance2.copy_file_to_container(os.path.join(script_dir, local_file_name), '/etc/clickhouse-server/users.d/row_policy.xml')
+        current_node.copy_file_to_container(os.path.join(script_dir, local_file_name), '/etc/clickhouse-server/users.d/row_policy.xml')
-    if reload_immediately:
+        if reload_immediately:
-       instance.query("SYSTEM RELOAD CONFIG")
+            current_node.query("SYSTEM RELOAD CONFIG")
 
 
 @pytest.fixture(scope="module", autouse=True)
@@ -23,42 +24,25 @@ def started_cluster():
     try:
         cluster.start()
 
-        instance.query('''
+        for current_node in nodes:
-            CREATE DATABASE mydb ENGINE=Ordinary;
+            current_node.query('''
+                CREATE DATABASE mydb ENGINE=Ordinary;
 
-            CREATE TABLE mydb.filtered_table1 (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a;
+                CREATE TABLE mydb.filtered_table1 (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.filtered_table1 values (0, 0), (0, 1), (1, 0), (1, 1);
+                INSERT INTO mydb.filtered_table1 values (0, 0), (0, 1), (1, 0), (1, 1);
 
-            CREATE TABLE mydb.table (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a;
+                CREATE TABLE mydb.table (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.table values (0, 0), (0, 1), (1, 0), (1, 1);
+                INSERT INTO mydb.table values (0, 0), (0, 1), (1, 0), (1, 1);
 
-            CREATE TABLE mydb.filtered_table2 (a UInt8, b UInt8, c UInt8, d UInt8) ENGINE MergeTree ORDER BY a;
+                CREATE TABLE mydb.filtered_table2 (a UInt8, b UInt8, c UInt8, d UInt8) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.filtered_table2 values (0, 0, 0, 0), (1, 2, 3, 4), (4, 3, 2, 1), (0, 0, 6, 0);
+                INSERT INTO mydb.filtered_table2 values (0, 0, 0, 0), (1, 2, 3, 4), (4, 3, 2, 1), (0, 0, 6, 0);
 
-            CREATE TABLE mydb.filtered_table3 (a UInt8, b UInt8, c UInt16 ALIAS a + b) ENGINE MergeTree ORDER BY a;
+                CREATE TABLE mydb.filtered_table3 (a UInt8, b UInt8, c UInt16 ALIAS a + b) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.filtered_table3 values (0, 0), (0, 1), (1, 0), (1, 1);
+                INSERT INTO mydb.filtered_table3 values (0, 0), (0, 1), (1, 0), (1, 1);
 
-            CREATE TABLE mydb.`.filtered_table4` (a UInt8, b UInt8, c UInt16 ALIAS a + b) ENGINE MergeTree ORDER BY a;
+                CREATE TABLE mydb.`.filtered_table4` (a UInt8, b UInt8, c UInt16 ALIAS a + b) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.`.filtered_table4` values (0, 0), (0, 1), (1, 0), (1, 1);
+                INSERT INTO mydb.`.filtered_table4` values (0, 0), (0, 1), (1, 0), (1, 1);
-        ''')
+            ''')
-        instance2.query('''
-            CREATE DATABASE mydb ENGINE=Ordinary;
-
-            CREATE TABLE mydb.filtered_table1 (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.filtered_table1 values (0, 0), (0, 1), (1, 0), (1, 1);
-
-            CREATE TABLE mydb.table (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.table values (0, 0), (0, 1), (1, 0), (1, 1);
-
-            CREATE TABLE mydb.filtered_table2 (a UInt8, b UInt8, c UInt8, d UInt8) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.filtered_table2 values (0, 0, 0, 0), (1, 2, 3, 4), (4, 3, 2, 1), (0, 0, 6, 0);
-
-            CREATE TABLE mydb.filtered_table3 (a UInt8, b UInt8, c UInt16 ALIAS a + b) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.filtered_table3 values (0, 0), (0, 1), (1, 0), (1, 1);
-
-            CREATE TABLE mydb.`.filtered_table4` (a UInt8, b UInt8, c UInt16 ALIAS a + b) ENGINE MergeTree ORDER BY a;
-            INSERT INTO mydb.`.filtered_table4` values (0, 0), (0, 1), (1, 0), (1, 1);
-        ''')
 
         yield cluster
 
@@ -72,243 +56,239 @@ def reset_policies():
         yield
     finally:
         copy_policy_xml('normal_filters.xml')
-        instance.query("DROP POLICY IF EXISTS pA, pB ON mydb.filtered_table1")
+        for current_node in nodes:
+            current_node.query("DROP POLICY IF EXISTS pA, pB ON mydb.filtered_table1")
 
 
 def test_smoke():
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1,0], [1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == "0\t0\t0\t0\n0\t0\t6\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table2") == TSV([[0, 0, 0, 0], [0, 0, 6, 0]])
-    assert instance.query("SELECT * FROM mydb.filtered_table3") == "0\t1\n1\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table3") == TSV([[0, 1], [1, 0]])
 
-    assert instance.query("SELECT a FROM mydb.filtered_table1") == "1\n1\n"
+    assert node.query("SELECT a FROM mydb.filtered_table1") == TSV([[1], [1]])
-    assert instance.query("SELECT b FROM mydb.filtered_table1") == "0\n1\n"
+    assert node.query("SELECT b FROM mydb.filtered_table1") == TSV([[0], [1]])
-    assert instance.query("SELECT a FROM mydb.filtered_table1 WHERE a = 1") == "1\n1\n"
+    assert node.query("SELECT a FROM mydb.filtered_table1 WHERE a = 1") == TSV([[1], [1]])
-    assert instance.query("SELECT a FROM mydb.filtered_table1 WHERE a IN (1)") == "1\n1\n"
+    assert node.query("SELECT a FROM mydb.filtered_table1 WHERE a IN (1)") == TSV([[1], [1]])
-    assert instance.query("SELECT a = 1 FROM mydb.filtered_table1") == "1\n1\n"
+    assert node.query("SELECT a = 1 FROM mydb.filtered_table1") == TSV([[1], [1]])
 
-    assert instance.query("SELECT a FROM mydb.filtered_table3") == "0\n1\n"
+    assert node.query("SELECT a FROM mydb.filtered_table3") == TSV([[0], [1]])
-    assert instance.query("SELECT b FROM mydb.filtered_table3") == "1\n0\n"
+    assert node.query("SELECT b FROM mydb.filtered_table3") == TSV([[1], [0]])
-    assert instance.query("SELECT c FROM mydb.filtered_table3") == "1\n1\n"
+    assert node.query("SELECT c FROM mydb.filtered_table3") == TSV([[1], [1]])
-    assert instance.query("SELECT a + b FROM mydb.filtered_table3") == "1\n1\n"
+    assert node.query("SELECT a + b FROM mydb.filtered_table3") == TSV([[1], [1]])
-    assert instance.query("SELECT a FROM mydb.filtered_table3 WHERE c = 1") == "0\n1\n"
+    assert node.query("SELECT a FROM mydb.filtered_table3 WHERE c = 1") == TSV([[0], [1]])
-    assert instance.query("SELECT c = 1 FROM mydb.filtered_table3") == "1\n1\n"
+    assert node.query("SELECT c = 1 FROM mydb.filtered_table3") == TSV([[1], [1]])
-    assert instance.query("SELECT a + b = 1 FROM mydb.filtered_table3") == "1\n1\n"
+    assert node.query("SELECT a + b = 1 FROM mydb.filtered_table3") == TSV([[1], [1]])
 
 
 def test_join():
-    assert instance.query("SELECT * FROM mydb.filtered_table1 as t1 ANY LEFT JOIN mydb.filtered_table1 as t2 ON t1.a = t2.b") == "1\t0\t1\t1\n1\t1\t1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1 as t1 ANY LEFT JOIN mydb.filtered_table1 as t2 ON t1.a = t2.b") == TSV([[1, 0, 1, 1], [1, 1, 1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table1 as t2 ANY RIGHT JOIN mydb.filtered_table1 as t1 ON t2.b = t1.a") == "1\t1\t1\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1 as t2 ANY RIGHT JOIN mydb.filtered_table1 as t1 ON t2.b = t1.a") == TSV([[1, 1, 1, 0]])
 
 
 def test_cannot_trick_row_policy_with_keyword_with():
-    assert instance.query("WITH 0 AS a SELECT * FROM mydb.filtered_table1") == "1\t0\n1\t1\n"
+    assert node.query("WITH 0 AS a SELECT * FROM mydb.filtered_table1") == TSV([[1, 0], [1, 1]])
-    assert instance.query("WITH 0 AS a SELECT a, b FROM mydb.filtered_table1") == "0\t0\n0\t1\n"
+    assert node.query("WITH 0 AS a SELECT a, b FROM mydb.filtered_table1") == TSV([[0, 0], [0, 1]])
-    assert instance.query("WITH 0 AS a SELECT a FROM mydb.filtered_table1") == "0\n0\n"
+    assert node.query("WITH 0 AS a SELECT a FROM mydb.filtered_table1") == TSV([[0], [0]])
-    assert instance.query("WITH 0 AS a SELECT b FROM mydb.filtered_table1") == "0\n1\n"
+    assert node.query("WITH 0 AS a SELECT b FROM mydb.filtered_table1") == TSV([[0], [1]])
 
 
 def test_prewhere_not_supported():
     expected_error = "PREWHERE is not supported if the table is filtered by row-level security"
-    assert expected_error in instance.query_and_get_error("SELECT * FROM mydb.filtered_table1 PREWHERE 1")
+    assert expected_error in node.query_and_get_error("SELECT * FROM mydb.filtered_table1 PREWHERE 1")
-    assert expected_error in instance.query_and_get_error("SELECT * FROM mydb.filtered_table2 PREWHERE 1")
+    assert expected_error in node.query_and_get_error("SELECT * FROM mydb.filtered_table2 PREWHERE 1")
-    assert expected_error in instance.query_and_get_error("SELECT * FROM mydb.filtered_table3 PREWHERE 1")
+    assert expected_error in node.query_and_get_error("SELECT * FROM mydb.filtered_table3 PREWHERE 1")
 
     # However PREWHERE should still work for user without filtering.
-    assert instance.query("SELECT * FROM mydb.filtered_table1 PREWHERE 1", user="another") == "0\t0\n0\t1\n1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1 PREWHERE 1", user="another") == TSV([[0, 0], [0, 1], [1, 0], [1, 1]])
 
 
 def test_single_table_name():
     copy_policy_xml('tag_with_table_name.xml')
-    assert instance.query("SELECT * FROM mydb.table") == "1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.table") == TSV([[1, 0], [1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == "0\t0\t0\t0\n0\t0\t6\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table2") == TSV([[0, 0, 0, 0], [0, 0, 6, 0]])
-    assert instance.query("SELECT * FROM mydb.filtered_table3") == "0\t1\n1\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table3") == TSV([[0, 1], [1, 0]])
 
-    assert instance.query("SELECT a FROM mydb.table") == "1\n1\n"
+    assert node.query("SELECT a FROM mydb.table") == TSV([[1], [1]])
-    assert instance.query("SELECT b FROM mydb.table") == "0\n1\n"
+    assert node.query("SELECT b FROM mydb.table") == TSV([[0], [1]])
-    assert instance.query("SELECT a FROM mydb.table WHERE a = 1") == "1\n1\n"
+    assert node.query("SELECT a FROM mydb.table WHERE a = 1") == TSV([[1], [1]])
-    assert instance.query("SELECT a = 1 FROM mydb.table") == "1\n1\n"
+    assert node.query("SELECT a = 1 FROM mydb.table") == TSV([[1], [1]])
 
-    assert instance.query("SELECT a FROM mydb.filtered_table3") == "0\n1\n"
+    assert node.query("SELECT a FROM mydb.filtered_table3") == TSV([[0], [1]])
-    assert instance.query("SELECT b FROM mydb.filtered_table3") == "1\n0\n"
+    assert node.query("SELECT b FROM mydb.filtered_table3") == TSV([[1], [0]])
-    assert instance.query("SELECT c FROM mydb.filtered_table3") == "1\n1\n"
+    assert node.query("SELECT c FROM mydb.filtered_table3") == TSV([[1], [1]])
-    assert instance.query("SELECT a + b FROM mydb.filtered_table3") == "1\n1\n"
+    assert node.query("SELECT a + b FROM mydb.filtered_table3") == TSV([[1], [1]])
-    assert instance.query("SELECT a FROM mydb.filtered_table3 WHERE c = 1") == "0\n1\n"
+    assert node.query("SELECT a FROM mydb.filtered_table3 WHERE c = 1") == TSV([[0], [1]])
-    assert instance.query("SELECT c = 1 FROM mydb.filtered_table3") == "1\n1\n"
+    assert node.query("SELECT c = 1 FROM mydb.filtered_table3") == TSV([[1], [1]])
-    assert instance.query("SELECT a + b = 1 FROM mydb.filtered_table3") == "1\n1\n"
+    assert node.query("SELECT a + b = 1 FROM mydb.filtered_table3") == TSV([[1], [1]])
 
 
 def test_custom_table_name():
     copy_policy_xml('multiple_tags_with_table_names.xml')
-    assert instance.query("SELECT * FROM mydb.table") == "1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.table") == TSV([[1, 0], [1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == "0\t0\t0\t0\n0\t0\t6\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table2") == TSV([[0, 0, 0, 0], [0, 0, 6, 0]])
-    assert instance.query("SELECT * FROM mydb.`.filtered_table4`") == "0\t1\n1\t0\n"
+    assert node.query("SELECT * FROM mydb.`.filtered_table4`") == TSV([[0, 1], [1, 0]])
 
-    assert instance.query("SELECT a FROM mydb.table") == "1\n1\n"
+    assert node.query("SELECT a FROM mydb.table") == TSV([[1], [1]])
-    assert instance.query("SELECT b FROM mydb.table") == "0\n1\n"
+    assert node.query("SELECT b FROM mydb.table") == TSV([[0], [1]])
-    assert instance.query("SELECT a FROM mydb.table WHERE a = 1") == "1\n1\n"
+    assert node.query("SELECT a FROM mydb.table WHERE a = 1") == TSV([[1], [1]])
-    assert instance.query("SELECT a = 1 FROM mydb.table") == "1\n1\n"
+    assert node.query("SELECT a = 1 FROM mydb.table") == TSV([[1], [1]])
 
-    assert instance.query("SELECT a FROM mydb.`.filtered_table4`") == "0\n1\n"
+    assert node.query("SELECT a FROM mydb.`.filtered_table4`") == TSV([[0], [1]])
-    assert instance.query("SELECT b FROM mydb.`.filtered_table4`") == "1\n0\n"
+    assert node.query("SELECT b FROM mydb.`.filtered_table4`") == TSV([[1], [0]])
-    assert instance.query("SELECT c FROM mydb.`.filtered_table4`") == "1\n1\n"
+    assert node.query("SELECT c FROM mydb.`.filtered_table4`") == TSV([[1], [1]])
-    assert instance.query("SELECT a + b FROM mydb.`.filtered_table4`") == "1\n1\n"
+    assert node.query("SELECT a + b FROM mydb.`.filtered_table4`") == TSV([[1], [1]])
-    assert instance.query("SELECT a FROM mydb.`.filtered_table4` WHERE c = 1") == "0\n1\n"
+    assert node.query("SELECT a FROM mydb.`.filtered_table4` WHERE c = 1") == TSV([[0], [1]])
-    assert instance.query("SELECT c = 1 FROM mydb.`.filtered_table4`") == "1\n1\n"
+    assert node.query("SELECT c = 1 FROM mydb.`.filtered_table4`") == TSV([[1], [1]])
-    assert instance.query("SELECT a + b = 1 FROM mydb.`.filtered_table4`") == "1\n1\n"
+    assert node.query("SELECT a + b = 1 FROM mydb.`.filtered_table4`") == TSV([[1], [1]])
 
 
 def test_change_of_users_xml_changes_row_policies():
     copy_policy_xml('normal_filters.xml')
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1, 0], [1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == "0\t0\t0\t0\n0\t0\t6\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table2") == TSV([[0, 0, 0, 0], [0, 0, 6, 0]])
-    assert instance.query("SELECT * FROM mydb.filtered_table3") == "0\t1\n1\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table3") == TSV([[0, 1], [1, 0]])
 
     copy_policy_xml('all_rows.xml')
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "0\t0\n0\t1\n1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[0, 0], [0, 1], [1, 0], [1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == "0\t0\t0\t0\n0\t0\t6\t0\n1\t2\t3\t4\n4\t3\t2\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table2") == TSV([[0, 0, 0, 0], [0, 0, 6, 0], [1, 2, 3, 4], [4, 3, 2, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table3") == "0\t0\n0\t1\n1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table3") == TSV([[0, 0], [0, 1], [1, 0], [1, 1]])
 
     copy_policy_xml('no_rows.xml')
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == ""
+    assert node.query("SELECT * FROM mydb.filtered_table1") == ""
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == ""
+    assert node.query("SELECT * FROM mydb.filtered_table2") == ""
-    assert instance.query("SELECT * FROM mydb.filtered_table3") == ""
+    assert node.query("SELECT * FROM mydb.filtered_table3") == ""
 
     copy_policy_xml('normal_filters.xml')
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1, 0], [1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == "0\t0\t0\t0\n0\t0\t6\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table2") == TSV([[0, 0, 0, 0], [0, 0, 6, 0]])
-    assert instance.query("SELECT * FROM mydb.filtered_table3") == "0\t1\n1\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table3") == TSV([[0, 1], [1, 0]])
 
     copy_policy_xml('no_filters.xml')
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "0\t0\n0\t1\n1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[0, 0], [0, 1], [1, 0], [1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == "0\t0\t0\t0\n0\t0\t6\t0\n1\t2\t3\t4\n4\t3\t2\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table2") == TSV([[0, 0, 0, 0], [0, 0, 6, 0], [1, 2, 3, 4], [4, 3, 2, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table3") == "0\t0\n0\t1\n1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table3") == TSV([[0, 0], [0, 1], [1, 0], [1, 1]])
 
     copy_policy_xml('normal_filters.xml')
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1, 0], [1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == "0\t0\t0\t0\n0\t0\t6\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table2") == TSV([[0, 0, 0, 0], [0, 0, 6, 0]])
-    assert instance.query("SELECT * FROM mydb.filtered_table3") == "0\t1\n1\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table3") == TSV([[0, 1], [1, 0]])
 
 
 def test_reload_users_xml_by_timer():
     copy_policy_xml('normal_filters.xml')
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1, 0], [1, 1]])
-    assert instance.query("SELECT * FROM mydb.filtered_table2") == "0\t0\t0\t0\n0\t0\t6\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table2") == TSV([[0, 0, 0, 0], [0, 0, 6, 0]])
-    assert instance.query("SELECT * FROM mydb.filtered_table3") == "0\t1\n1\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table3") == TSV([[0, 1], [1, 0]])
 
     time.sleep(1) # The modification time of the 'row_policy.xml' file should be different.
     copy_policy_xml('all_rows.xml', False)
-    assert_eq_with_retry(instance, "SELECT * FROM mydb.filtered_table1", "0\t0\n0\t1\n1\t0\n1\t1")
+    assert_eq_with_retry(node, "SELECT * FROM mydb.filtered_table1", [[0, 0], [0, 1], [1, 0], [1, 1]])
-    assert_eq_with_retry(instance, "SELECT * FROM mydb.filtered_table2", "0\t0\t0\t0\n0\t0\t6\t0\n1\t2\t3\t4\n4\t3\t2\t1")
+    assert_eq_with_retry(node, "SELECT * FROM mydb.filtered_table2", [[0, 0, 0, 0], [0, 0, 6, 0], [1, 2, 3, 4], [4, 3, 2, 1]])
-    assert_eq_with_retry(instance, "SELECT * FROM mydb.filtered_table3", "0\t0\n0\t1\n1\t0\n1\t1")
+    assert_eq_with_retry(node, "SELECT * FROM mydb.filtered_table3", [[0, 0], [0, 1], [1, 0], [1, 1]])
 
     time.sleep(1) # The modification time of the 'row_policy.xml' file should be different.
     copy_policy_xml('normal_filters.xml', False)
-    assert_eq_with_retry(instance, "SELECT * FROM mydb.filtered_table1", "1\t0\n1\t1")
+    assert_eq_with_retry(node, "SELECT * FROM mydb.filtered_table1", [[1, 0], [1, 1]])
-    assert_eq_with_retry(instance, "SELECT * FROM mydb.filtered_table2", "0\t0\t0\t0\n0\t0\t6\t0")
+    assert_eq_with_retry(node, "SELECT * FROM mydb.filtered_table2", [[0, 0, 0, 0], [0, 0, 6, 0]])
-    assert_eq_with_retry(instance, "SELECT * FROM mydb.filtered_table3", "0\t1\n1\t0")
+    assert_eq_with_retry(node, "SELECT * FROM mydb.filtered_table3", [[0, 1], [1, 0]])
 
 
 def test_introspection():
-    assert instance.query("SELECT currentRowPolicies('mydb', 'filtered_table1')") == "['default']\n"
+    policies = [
-    assert instance.query("SELECT currentRowPolicies('mydb', 'filtered_table2')") == "['default']\n"
+        ["another ON mydb.filtered_table1", "another", "mydb", "filtered_table1", "6068883a-0e9d-f802-7e22-0144f8e66d3c", "users.xml", "1",                      0, 0, "['another']", "[]"],
-    assert instance.query("SELECT currentRowPolicies('mydb', 'filtered_table3')") == "['default']\n"
+        ["another ON mydb.filtered_table2", "another", "mydb", "filtered_table2", "c019e957-c60b-d54e-cc52-7c90dac5fb01", "users.xml", "1",                      0, 0, "['another']", "[]"],
-    assert instance.query("SELECT arraySort(currentRowPolicies())") == "[('mydb','filtered_table1','default'),('mydb','filtered_table2','default'),('mydb','filtered_table3','default'),('mydb','local','default')]\n"
+        ["another ON mydb.filtered_table3", "another", "mydb", "filtered_table3", "4cb080d0-44e8-dbef-6026-346655143628", "users.xml", "1",                      0, 0, "['another']", "[]"],
-
+        ["another ON mydb.local",           "another", "mydb", "local",           "5b23c389-7e18-06bf-a6bc-dd1afbbc0a97", "users.xml", "a = 1",                  0, 0, "['another']", "[]"],
-    policy1 = "mydb\tfiltered_table1\tdefault\tdefault ON mydb.filtered_table1\t9e8a8f62-4965-2b5e-8599-57c7b99b3549\tusers.xml\t0\ta = 1\t\t\t\t\n"
+        ["default ON mydb.filtered_table1", "default", "mydb", "filtered_table1", "9e8a8f62-4965-2b5e-8599-57c7b99b3549", "users.xml", "a = 1",                  0, 0, "['default']", "[]"],
-    policy2 = "mydb\tfiltered_table2\tdefault\tdefault ON mydb.filtered_table2\tcffae79d-b9bf-a2ef-b798-019c18470b25\tusers.xml\t0\ta + b < 1 or c - d > 5\t\t\t\t\n"
+        ["default ON mydb.filtered_table2", "default", "mydb", "filtered_table2", "cffae79d-b9bf-a2ef-b798-019c18470b25", "users.xml", "a + b < 1 or c - d > 5", 0, 0, "['default']", "[]"],
-    policy3 = "mydb\tfiltered_table3\tdefault\tdefault ON mydb.filtered_table3\t12fc5cef-e3da-3940-ec79-d8be3911f42b\tusers.xml\t0\tc = 1\t\t\t\t\n"
+        ["default ON mydb.filtered_table3", "default", "mydb", "filtered_table3", "12fc5cef-e3da-3940-ec79-d8be3911f42b", "users.xml", "c = 1",                  0, 0, "['default']", "[]"],
-    policy4 = "mydb\tlocal\tdefault\tdefault ON mydb.local\tcdacaeb5-1d97-f99d-2bb0-4574f290629c\tusers.xml\t0\t1\t\t\t\t\n"
+        ["default ON mydb.local",           "default", "mydb", "local",           "cdacaeb5-1d97-f99d-2bb0-4574f290629c", "users.xml", "1",                      0, 0, "['default']", "[]"]
-    assert instance.query("SELECT * from system.row_policies WHERE has(currentRowPolicyIDs('mydb', 'filtered_table1'), id) ORDER BY table, name") == policy1
+    ]
-    assert instance.query("SELECT * from system.row_policies WHERE has(currentRowPolicyIDs('mydb', 'filtered_table2'), id) ORDER BY table, name") == policy2
+    assert node.query("SELECT * from system.row_policies ORDER BY short_name, database, table") == TSV(policies)
-    assert instance.query("SELECT * from system.row_policies WHERE has(currentRowPolicyIDs('mydb', 'filtered_table3'), id) ORDER BY table, name") == policy3
-    assert instance.query("SELECT * from system.row_policies WHERE has(currentRowPolicyIDs('mydb', 'local'), id) ORDER BY table, name") == policy4
-    assert instance.query("SELECT * from system.row_policies WHERE has(currentRowPolicyIDs(), id) ORDER BY table, name") == policy1 + policy2 + policy3 + policy4
 
 
 def test_dcl_introspection():
-    assert instance.query("SHOW POLICIES ON mydb.filtered_table1") == "another\ndefault\n"
+    assert node.query("SHOW POLICIES") == TSV(["another ON mydb.filtered_table1", "another ON mydb.filtered_table2", "another ON mydb.filtered_table3", "another ON mydb.local", "default ON mydb.filtered_table1", "default ON mydb.filtered_table2", "default ON mydb.filtered_table3", "default ON mydb.local"])
-    assert instance.query("SHOW POLICIES CURRENT ON mydb.filtered_table2") == "default\n"
+    assert node.query("SHOW POLICIES ON mydb.filtered_table1") == TSV(["another", "default"])
-    assert instance.query("SHOW POLICIES") == "another ON mydb.filtered_table1\nanother ON mydb.filtered_table2\nanother ON mydb.filtered_table3\nanother ON mydb.local\ndefault ON mydb.filtered_table1\ndefault ON mydb.filtered_table2\ndefault ON mydb.filtered_table3\ndefault ON mydb.local\n"
+    assert node.query("SHOW POLICIES ON mydb.local") == TSV(["another", "default"])
-    assert instance.query("SHOW POLICIES CURRENT") == "default ON mydb.filtered_table1\ndefault ON mydb.filtered_table2\ndefault ON mydb.filtered_table3\ndefault ON mydb.local\n"
 
-    assert instance.query("SHOW CREATE POLICY default ON mydb.filtered_table1") == "CREATE ROW POLICY default ON mydb.filtered_table1 FOR SELECT USING a = 1 TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.filtered_table1") == "CREATE ROW POLICY default ON mydb.filtered_table1 FOR SELECT USING a = 1 TO default\n"
-    assert instance.query("SHOW CREATE POLICY default ON mydb.filtered_table2") == "CREATE ROW POLICY default ON mydb.filtered_table2 FOR SELECT USING ((a + b) < 1) OR ((c - d) > 5) TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.filtered_table2") == "CREATE ROW POLICY default ON mydb.filtered_table2 FOR SELECT USING ((a + b) < 1) OR ((c - d) > 5) TO default\n"
-    assert instance.query("SHOW CREATE POLICY default ON mydb.filtered_table3") == "CREATE ROW POLICY default ON mydb.filtered_table3 FOR SELECT USING c = 1 TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.filtered_table3") == "CREATE ROW POLICY default ON mydb.filtered_table3 FOR SELECT USING c = 1 TO default\n"
-    assert instance.query("SHOW CREATE POLICY default ON mydb.local") == "CREATE ROW POLICY default ON mydb.local FOR SELECT USING 1 TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.local") == "CREATE ROW POLICY default ON mydb.local FOR SELECT USING 1 TO default\n"
 
     copy_policy_xml('all_rows.xml')
-    assert instance.query("SHOW POLICIES CURRENT") == "default ON mydb.filtered_table1\ndefault ON mydb.filtered_table2\ndefault ON mydb.filtered_table3\n"
+    assert node.query("SHOW POLICIES") == TSV(["another ON mydb.filtered_table1", "another ON mydb.filtered_table2", "another ON mydb.filtered_table3", "default ON mydb.filtered_table1", "default ON mydb.filtered_table2", "default ON mydb.filtered_table3"])
-    assert instance.query("SHOW CREATE POLICY default ON mydb.filtered_table1") == "CREATE ROW POLICY default ON mydb.filtered_table1 FOR SELECT USING 1 TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.filtered_table1") == "CREATE ROW POLICY default ON mydb.filtered_table1 FOR SELECT USING 1 TO default\n"
-    assert instance.query("SHOW CREATE POLICY default ON mydb.filtered_table2") == "CREATE ROW POLICY default ON mydb.filtered_table2 FOR SELECT USING 1 TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.filtered_table2") == "CREATE ROW POLICY default ON mydb.filtered_table2 FOR SELECT USING 1 TO default\n"
-    assert instance.query("SHOW CREATE POLICY default ON mydb.filtered_table3") == "CREATE ROW POLICY default ON mydb.filtered_table3 FOR SELECT USING 1 TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.filtered_table3") == "CREATE ROW POLICY default ON mydb.filtered_table3 FOR SELECT USING 1 TO default\n"
 
     copy_policy_xml('no_rows.xml')
-    assert instance.query("SHOW POLICIES CURRENT") == "default ON mydb.filtered_table1\ndefault ON mydb.filtered_table2\ndefault ON mydb.filtered_table3\n"
+    assert node.query("SHOW POLICIES") == TSV(["another ON mydb.filtered_table1", "another ON mydb.filtered_table2", "another ON mydb.filtered_table3", "default ON mydb.filtered_table1", "default ON mydb.filtered_table2", "default ON mydb.filtered_table3"])
-    assert instance.query("SHOW CREATE POLICY default ON mydb.filtered_table1") == "CREATE ROW POLICY default ON mydb.filtered_table1 FOR SELECT USING NULL TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.filtered_table1") == "CREATE ROW POLICY default ON mydb.filtered_table1 FOR SELECT USING NULL TO default\n"
-    assert instance.query("SHOW CREATE POLICY default ON mydb.filtered_table2") == "CREATE ROW POLICY default ON mydb.filtered_table2 FOR SELECT USING NULL TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.filtered_table2") == "CREATE ROW POLICY default ON mydb.filtered_table2 FOR SELECT USING NULL TO default\n"
-    assert instance.query("SHOW CREATE POLICY default ON mydb.filtered_table3") == "CREATE ROW POLICY default ON mydb.filtered_table3 FOR SELECT USING NULL TO default\n"
+    assert node.query("SHOW CREATE POLICY default ON mydb.filtered_table3") == "CREATE ROW POLICY default ON mydb.filtered_table3 FOR SELECT USING NULL TO default\n"
 
     copy_policy_xml('no_filters.xml')
-    assert instance.query("SHOW POLICIES") == ""
+    assert node.query("SHOW POLICIES") == ""
 
 
 def test_dcl_management():
     copy_policy_xml('no_filters.xml')
-    assert instance.query("SHOW POLICIES") == ""
+    assert node.query("SHOW POLICIES") == ""
 
-    instance.query("CREATE POLICY pA ON mydb.filtered_table1 FOR SELECT USING a<b")
+    node.query("CREATE POLICY pA ON mydb.filtered_table1 FOR SELECT USING a<b")
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == ""
+    assert node.query("SELECT * FROM mydb.filtered_table1") == ""
-    assert instance.query("SHOW POLICIES CURRENT ON mydb.filtered_table1") == ""
+    assert node.query("SHOW POLICIES ON mydb.filtered_table1") == "pA\n"
-    assert instance.query("SHOW POLICIES ON mydb.filtered_table1") == "pA\n"
 
-    instance.query("ALTER POLICY pA ON mydb.filtered_table1 TO default")
+    node.query("ALTER POLICY pA ON mydb.filtered_table1 TO default")
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "0\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[0, 1]])
-    assert instance.query("SHOW POLICIES CURRENT ON mydb.filtered_table1") == "pA\n"
+    assert node.query("SHOW POLICIES ON mydb.filtered_table1") == "pA\n"
 
-    instance.query("ALTER POLICY pA ON mydb.filtered_table1 FOR SELECT USING a>b")
+    node.query("ALTER POLICY pA ON mydb.filtered_table1 FOR SELECT USING a>b")
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1, 0]])
 
-    instance.query("ALTER POLICY pA ON mydb.filtered_table1 RENAME TO pB")
+    node.query("ALTER POLICY pA ON mydb.filtered_table1 RENAME TO pB")
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t0\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1, 0]])
-    assert instance.query("SHOW POLICIES CURRENT ON mydb.filtered_table1") == "pB\n"
+    assert node.query("SHOW POLICIES ON mydb.filtered_table1") == "pB\n"
-    assert instance.query("SHOW CREATE POLICY pB ON mydb.filtered_table1") == "CREATE ROW POLICY pB ON mydb.filtered_table1 FOR SELECT USING a > b TO default\n"
+    assert node.query("SHOW CREATE POLICY pB ON mydb.filtered_table1") == "CREATE ROW POLICY pB ON mydb.filtered_table1 FOR SELECT USING a > b TO default\n"
 
-    instance.query("DROP POLICY pB ON mydb.filtered_table1")
+    node.query("DROP POLICY pB ON mydb.filtered_table1")
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "0\t0\n0\t1\n1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[0, 0], [0, 1], [1, 0], [1, 1]])
-    assert instance.query("SHOW POLICIES") == ""
+    assert node.query("SHOW POLICIES") == ""
 
 
 def test_users_xml_is_readonly():
-    assert re.search("storage is readonly", instance.query_and_get_error("DROP POLICY default ON mydb.filtered_table1"))
+    assert re.search("storage is readonly", node.query_and_get_error("DROP POLICY default ON mydb.filtered_table1"))
 
 
 def test_miscellaneous_engines():
     copy_policy_xml('normal_filters.xml')
 
     # ReplicatedMergeTree
-    instance.query("DROP TABLE mydb.filtered_table1")
+    node.query("DROP TABLE mydb.filtered_table1")
-    instance.query("CREATE TABLE mydb.filtered_table1 (a UInt8, b UInt8) ENGINE ReplicatedMergeTree('/clickhouse/tables/00-00/filtered_table1', 'replica1') ORDER BY a")
+    node.query("CREATE TABLE mydb.filtered_table1 (a UInt8, b UInt8) ENGINE ReplicatedMergeTree('/clickhouse/tables/00-00/filtered_table1', 'replica1') ORDER BY a")
-    instance.query("INSERT INTO mydb.filtered_table1 values (0, 0), (0, 1), (1, 0), (1, 1)")
+    node.query("INSERT INTO mydb.filtered_table1 values (0, 0), (0, 1), (1, 0), (1, 1)")
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1, 0], [1, 1]])
 
     # CollapsingMergeTree
-    instance.query("DROP TABLE mydb.filtered_table1")
+    node.query("DROP TABLE mydb.filtered_table1")
-    instance.query("CREATE TABLE mydb.filtered_table1 (a UInt8, b Int8) ENGINE CollapsingMergeTree(b) ORDER BY a")
+    node.query("CREATE TABLE mydb.filtered_table1 (a UInt8, b Int8) ENGINE CollapsingMergeTree(b) ORDER BY a")
-    instance.query("INSERT INTO mydb.filtered_table1 values (0, 1), (0, 1), (1, 1), (1, 1)")
+    node.query("INSERT INTO mydb.filtered_table1 values (0, 1), (0, 1), (1, 1), (1, 1)")
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t1\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1, 1], [1, 1]])
 
     # ReplicatedCollapsingMergeTree
-    instance.query("DROP TABLE mydb.filtered_table1")
+    node.query("DROP TABLE mydb.filtered_table1")
-    instance.query("CREATE TABLE mydb.filtered_table1 (a UInt8, b Int8) ENGINE ReplicatedCollapsingMergeTree('/clickhouse/tables/00-00/filtered_table1', 'replica1', b) ORDER BY a")
+    node.query("CREATE TABLE mydb.filtered_table1 (a UInt8, b Int8) ENGINE ReplicatedCollapsingMergeTree('/clickhouse/tables/00-00/filtered_table1', 'replica1', b) ORDER BY a")
-    instance.query("INSERT INTO mydb.filtered_table1 values (0, 1), (0, 1), (1, 1), (1, 1)")
+    node.query("INSERT INTO mydb.filtered_table1 values (0, 1), (0, 1), (1, 1), (1, 1)")
-    assert instance.query("SELECT * FROM mydb.filtered_table1") == "1\t1\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.filtered_table1") == TSV([[1, 1], [1, 1]])
 
     # DistributedMergeTree
-    instance.query("DROP TABLE IF EXISTS mydb.not_filtered_table")
+    node.query("DROP TABLE IF EXISTS mydb.not_filtered_table")
-    instance.query("CREATE TABLE mydb.not_filtered_table (a UInt8, b UInt8) ENGINE Distributed('test_local_cluster', mydb, local)")
+    node.query("CREATE TABLE mydb.not_filtered_table (a UInt8, b UInt8) ENGINE Distributed('test_local_cluster', mydb, local)")
-    instance.query("CREATE TABLE mydb.local (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a")
+    node.query("CREATE TABLE mydb.local (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a")
-    instance2.query("CREATE TABLE mydb.local (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a")
+    node2.query("CREATE TABLE mydb.local (a UInt8, b UInt8) ENGINE MergeTree ORDER BY a")
-    instance.query("INSERT INTO mydb.local values (2, 0), (2, 1), (1, 0), (1, 1)")
+    node.query("INSERT INTO mydb.local values (2, 0), (2, 1), (1, 0), (1, 1)")
-    instance2.query("INSERT INTO mydb.local values (3, 0), (3, 1), (1, 0), (1, 1)")
+    node2.query("INSERT INTO mydb.local values (3, 0), (3, 1), (1, 0), (1, 1)")
-    assert instance.query("SELECT * FROM mydb.not_filtered_table", user="another") == "1\t0\n1\t1\n1\t0\n1\t1\n"
+    assert node.query("SELECT * FROM mydb.not_filtered_table", user="another") == TSV([[1, 0], [1, 1], [1, 0], [1, 1]])
-    assert instance.query("SELECT sum(a), b FROM mydb.not_filtered_table GROUP BY b ORDER BY b", user="another") == "2\t0\n2\t1\n"
+    assert node.query("SELECT sum(a), b FROM mydb.not_filtered_table GROUP BY b ORDER BY b", user="another") == TSV([[2, 0], [2, 1]])