Added SYSTEM SYNC DATABASE query (#35944)

src/Access/Common/AccessType.h

@@ -158,6 +158,7 @@ enum class AccessType
     M(SYSTEM_SYNC_REPLICA, "SYNC REPLICA", TABLE, SYSTEM) \
     M(SYSTEM_RESTART_REPLICA, "RESTART REPLICA", TABLE, SYSTEM) \
     M(SYSTEM_RESTORE_REPLICA, "RESTORE REPLICA", TABLE, SYSTEM) \
+    M(SYSTEM_SYNC_DATABASE_REPLICA, "SYNC DATABASE REPLICA", DATABASE, SYSTEM) \
     M(SYSTEM_FLUSH_DISTRIBUTED, "FLUSH DISTRIBUTED", TABLE, SYSTEM_FLUSH) \
     M(SYSTEM_FLUSH_LOGS, "FLUSH LOGS", GLOBAL, SYSTEM_FLUSH) \
     M(SYSTEM_FLUSH, "", GROUP, SYSTEM) \

src/Access/tests/gtest_access_rights_ops.cpp

@@ -53,7 +53,7 @@ TEST(AccessRights, Union)
               "SHOW ROW POLICIES, SYSTEM MERGES, SYSTEM TTL MERGES, SYSTEM FETCHES, "
               "SYSTEM MOVES, SYSTEM SENDS, SYSTEM REPLICATION QUEUES, "
               "SYSTEM DROP REPLICA, SYSTEM SYNC REPLICA, SYSTEM RESTART REPLICA, "
-              "SYSTEM RESTORE REPLICA, SYSTEM FLUSH DISTRIBUTED, dictGet ON db1.*");
+              "SYSTEM RESTORE REPLICA, SYSTEM SYNC DATABASE REPLICA, SYSTEM FLUSH DISTRIBUTED, dictGet ON db1.*");
 }
 
 

src/Databases/DatabaseReplicated.cpp

@@ -312,6 +312,11 @@ void DatabaseReplicated::createEmptyLogEntry(const ZooKeeperPtr & current_zookee
     DatabaseReplicatedDDLWorker::enqueueQueryImpl(current_zookeeper, entry, this, true);
 }
 
+bool DatabaseReplicated::waitForReplicaToProcessAllEntries(UInt64 timeout_ms)
+{
+    return ddl_worker->waitForReplicaToProcessAllEntries(timeout_ms);
+}
+
 void DatabaseReplicated::createReplicaNodesInZooKeeper(const zkutil::ZooKeeperPtr & current_zookeeper)
 {
     /// Write host name to replica_path, it will protect from multiple replicas with the same name

src/Databases/DatabaseReplicated.h

@@ -42,6 +42,8 @@ public:
     void detachTablePermanently(ContextPtr context, const String & table_name) override;
     void removeDetachedPermanentlyFlag(ContextPtr context, const String & table_name, const String & table_metadata_path, bool attach) const override;
 
+    bool waitForReplicaToProcessAllEntries(UInt64 timeout_ms);
+
     /// Try to execute DLL query on current host as initial query. If query is succeed,
     /// then it will be executed on all replicas.
     BlockIO tryEnqueueReplicatedDDL(const ASTPtr & query, ContextPtr query_context, bool internal = false);

src/Databases/DatabaseReplicatedWorker.cpp

@@ -85,6 +85,49 @@ String DatabaseReplicatedDDLWorker::enqueueQuery(DDLLogEntry & entry)
     return enqueueQueryImpl(zookeeper, entry, database);
 }
 
+
+bool DatabaseReplicatedDDLWorker::waitForReplicaToProcessAllEntries(UInt64 timeout_ms)
+{
+    auto zookeeper = getAndSetZooKeeper();
+    const auto our_log_ptr_path = database->replica_path + "/log_ptr";
+    const auto max_log_ptr_path = database->zookeeper_path + "/max_log_ptr";
+    UInt32 our_log_ptr = parse<UInt32>(zookeeper->get(our_log_ptr_path));
+    UInt32 max_log_ptr = parse<UInt32>(zookeeper->get(max_log_ptr_path));
+    assert(our_log_ptr <= max_log_ptr);
+
+    /// max_log_ptr is the number of the last successfully executed request on the initiator
+    /// The log could contain other entries which are not committed yet
+    /// This equality is enough to say that current replicas is up-to-date
+    if (our_log_ptr == max_log_ptr)
+        return true;
+
+    auto max_log =  DDLTask::getLogEntryName(max_log_ptr);
+    LOG_TRACE(log, "Waiting for worker thread to process all entries before {}, current task is {}", max_log, current_task);
+
+    std::unique_lock lock{mutex};
+    bool processed = wait_current_task_change.wait_for(lock, std::chrono::milliseconds(timeout_ms), [&]()
+    {
+        assert(zookeeper->expired() || current_task <= max_log);
+        return zookeeper->expired() || current_task == max_log || stop_flag;
+    });
+
+    if (!processed)
+        return false;
+
+    LOG_TRACE(log, "Waiting for worker thread to process all entries before {}, current task is {}", max_log, current_task);
+
+    /// Lets now wait for max_log_ptr to be processed
+    Coordination::Stat stat;
+    auto event_ptr = std::make_shared<Poco::Event>();
+    auto new_log = zookeeper->get(our_log_ptr_path, &stat, event_ptr);
+
+    if (new_log == toString(max_log_ptr))
+        return true;
+
+    return event_ptr->tryWait(timeout_ms);
+}
+
+
 String DatabaseReplicatedDDLWorker::enqueueQueryImpl(const ZooKeeperPtr & zookeeper, DDLLogEntry & entry,
                                DatabaseReplicated * const database, bool committed)
 {

src/Databases/DatabaseReplicatedWorker.h

@@ -29,6 +29,8 @@ public:
 
     void shutdown() override;
 
+    bool waitForReplicaToProcessAllEntries(UInt64 timeout_ms);
+
     static String enqueueQueryImpl(const ZooKeeperPtr & zookeeper, DDLLogEntry & entry,
                                    DatabaseReplicated * const database, bool committed = false); /// NOLINT
 
@@ -44,6 +46,7 @@ private:
     DatabaseReplicated * const database;
     mutable std::mutex mutex;
     std::condition_variable wait_current_task_change;
+
     String current_task;
     std::atomic<UInt32> logs_to_keep = std::numeric_limits<UInt32>::max();
 };

src/Interpreters/InterpreterCreateQuery.cpp

@@ -980,7 +980,7 @@ BlockIO InterpreterCreateQuery::createTable(ASTCreateQuery & create)
         {
             auto guard = DatabaseCatalog::instance().getDDLGuard(database_name, create.getTable());
 
-            if (auto* ptr = typeid_cast<DatabaseReplicated *>(database.get());
+            if (auto * ptr = typeid_cast<DatabaseReplicated *>(database.get());
                 ptr && !getContext()->getClientInfo().is_replicated_database_internal)
             {
                 create.setDatabase(database_name);

src/Interpreters/InterpreterSystemQuery.cpp

@@ -37,6 +37,7 @@
 #include <Access/ContextAccess.h>
 #include <Access/Common/AllowedClientHosts.h>
 #include <Databases/IDatabase.h>
+#include <Databases/DatabaseReplicated.h>
 #include <Disks/DiskRestartProxy.h>
 #include <Storages/StorageDistributed.h>
 #include <Storages/StorageReplicatedMergeTree.h>
@@ -437,6 +438,9 @@ BlockIO InterpreterSystemQuery::execute()
         case Type::SYNC_REPLICA:
             syncReplica(query);
             break;
+        case Type::SYNC_DATABASE_REPLICA:
+            syncReplicatedDatabase(query);
+            break;
         case Type::FLUSH_DISTRIBUTED:
             flushDistributed(query);
             break;
@@ -726,9 +730,8 @@ void InterpreterSystemQuery::syncReplica(ASTSystemQuery &)
         if (!storage_replicated->waitForShrinkingQueueSize(0, getContext()->getSettingsRef().receive_timeout.totalMilliseconds()))
         {
             LOG_ERROR(log, "SYNC REPLICA {}: Timed out!", table_id.getNameForLogs());
-            throw Exception(
-                    "SYNC REPLICA " + table_id.getNameForLogs() + ": command timed out. "
-                    "See the 'receive_timeout' setting", ErrorCodes::TIMEOUT_EXCEEDED);
+            throw Exception(ErrorCodes::TIMEOUT_EXCEEDED, "SYNC REPLICA {}: command timed out. " \
+                    "See the 'receive_timeout' setting", table_id.getNameForLogs());
         }
         LOG_TRACE(log, "SYNC REPLICA {}: OK", table_id.getNameForLogs());
     }
@@ -736,6 +739,28 @@ void InterpreterSystemQuery::syncReplica(ASTSystemQuery &)
         throw Exception(ErrorCodes::BAD_ARGUMENTS, table_is_not_replicated.data(), table_id.getNameForLogs());
 }
 
+
+void InterpreterSystemQuery::syncReplicatedDatabase(ASTSystemQuery & query)
+{
+    const auto database_name = query.getDatabase();
+    auto database = DatabaseCatalog::instance().getDatabase(database_name);
+
+    if (auto * ptr = typeid_cast<DatabaseReplicated *>(database.get()))
+    {
+        LOG_TRACE(log, "Synchronizing entries in the database replica's (name: {}) queue with the log", database_name);
+        if (!ptr->waitForReplicaToProcessAllEntries(getContext()->getSettingsRef().receive_timeout.totalMilliseconds()))
+        {
+            LOG_ERROR(log, "SYNC DATABASE REPLICA {}: Timed out!", database_name);
+            throw Exception(ErrorCodes::TIMEOUT_EXCEEDED, "SYNC DATABASE REPLICA {}: command timed out. " \
+                    "See the 'receive_timeout' setting", database_name);
+        }
+        LOG_TRACE(log, "SYNC DATABASE REPLICA {}: OK", database_name);
+    }
+    else
+        throw Exception(ErrorCodes::BAD_ARGUMENTS, "SYSTEM SYNC DATABASE REPLICA query is intended to work only with Replicated engine");
+}
+
+
 void InterpreterSystemQuery::flushDistributed(ASTSystemQuery &)
 {
     getContext()->checkAccess(AccessType::SYSTEM_FLUSH_DISTRIBUTED, table_id);
@@ -905,6 +930,11 @@ AccessRightsElements InterpreterSystemQuery::getRequiredAccessForDDLOnCluster()
             required_access.emplace_back(AccessType::SYSTEM_RESTART_REPLICA);
             break;
         }
+        case Type::SYNC_DATABASE_REPLICA:
+        {
+            required_access.emplace_back(AccessType::SYSTEM_SYNC_DATABASE_REPLICA, query.getDatabase());
+            break;
+        }
         case Type::FLUSH_DISTRIBUTED:
         {
             required_access.emplace_back(AccessType::SYSTEM_FLUSH_DISTRIBUTED, query.getDatabase(), query.getTable());

src/Interpreters/InterpreterSystemQuery.h

@@ -51,6 +51,8 @@ private:
     void restartReplicas(ContextMutablePtr system_context);
     void syncReplica(ASTSystemQuery & query);
 
+    void syncReplicatedDatabase(ASTSystemQuery & query);
+
     void restoreReplica();
 
     void dropReplica(ASTSystemQuery & query);

src/Parsers/ASTSystemQuery.h

@@ -36,6 +36,7 @@ public:
         RESTORE_REPLICA,
         DROP_REPLICA,
         SYNC_REPLICA,
+        SYNC_DATABASE_REPLICA,
         RELOAD_DICTIONARY,
         RELOAD_DICTIONARIES,
         RELOAD_MODEL,

src/Parsers/ParserSystemQuery.cpp

@@ -245,6 +245,13 @@ bool ParserSystemQuery::parseImpl(IParser::Pos & pos, ASTPtr & node, Expected &
             break;
         }
 
+        case Type::SYNC_DATABASE_REPLICA:
+        {
+            if (!parseDatabaseAsAST(pos, expected, res->database))
+                return false;
+            break;
+        }
+
         case Type::RESTART_DISK:
         {
             if (!parseQueryWithOnClusterAndTarget(res, pos, expected, SystemQueryTargetType::Disk))

tests/integration/test_replicated_database/test.py

@@ -800,3 +800,37 @@ def test_server_uuid(started_cluster):
     main_node.restart_clickhouse()
     uuid1_after_restart = main_node.query("select serverUUID()")
     assert uuid1 == uuid1_after_restart
+
+
+def test_sync_replica(started_cluster):
+    main_node.query(
+        "CREATE DATABASE test_sync_database ENGINE = Replicated('/clickhouse/databases/test1', 'shard1', 'replica1');"
+    )
+    dummy_node.query(
+        "CREATE DATABASE test_sync_database ENGINE = Replicated('/clickhouse/databases/test1', 'shard1', 'replica2');"
+    )
+
+    number_of_tables = 1000
+
+    settings = {"distributed_ddl_task_timeout": 0}
+
+    with PartitionManager() as pm:
+        pm.drop_instance_zk_connections(dummy_node)
+
+        for i in range(number_of_tables):
+            main_node.query(
+                "CREATE TABLE test_sync_database.table_{} (n int) ENGINE=MergeTree order by n".format(
+                    i
+                ),
+                settings=settings,
+            )
+
+    dummy_node.query("SYSTEM SYNC DATABASE REPLICA test_sync_database")
+
+    assert dummy_node.query(
+        "SELECT count() FROM system.tables where database='test_sync_database'"
+    ).strip() == str(number_of_tables)
+
+    assert main_node.query(
+        "SELECT count() FROM system.tables where database='test_sync_database'"
+    ).strip() == str(number_of_tables)

tests/queries/0_stateless/01271_show_privileges.reference

@@ -112,6 +112,7 @@ SYSTEM DROP REPLICA	['DROP REPLICA']	TABLE	SYSTEM
 SYSTEM SYNC REPLICA	['SYNC REPLICA']	TABLE	SYSTEM
 SYSTEM RESTART REPLICA	['RESTART REPLICA']	TABLE	SYSTEM
 SYSTEM RESTORE REPLICA	['RESTORE REPLICA']	TABLE	SYSTEM
+SYSTEM SYNC DATABASE REPLICA	['SYNC DATABASE REPLICA']	DATABASE	SYSTEM
 SYSTEM FLUSH DISTRIBUTED	['FLUSH DISTRIBUTED']	TABLE	SYSTEM FLUSH
 SYSTEM FLUSH LOGS	['FLUSH LOGS']	GLOBAL	SYSTEM FLUSH
 SYSTEM FLUSH	[]	\N	SYSTEM

tests/queries/0_stateless/02117_show_create_table_system.reference

@@ -276,7 +276,7 @@ CREATE TABLE system.grants
 (
     `user_name` Nullable(String),
     `role_name` Nullable(String),
-    `access_type` Enum16('SHOW DATABASES' = 0, 'SHOW TABLES' = 1, 'SHOW COLUMNS' = 2, 'SHOW DICTIONARIES' = 3, 'SHOW' = 4, 'SELECT' = 5, 'INSERT' = 6, 'ALTER UPDATE' = 7, 'ALTER DELETE' = 8, 'ALTER ADD COLUMN' = 9, 'ALTER MODIFY COLUMN' = 10, 'ALTER DROP COLUMN' = 11, 'ALTER COMMENT COLUMN' = 12, 'ALTER CLEAR COLUMN' = 13, 'ALTER RENAME COLUMN' = 14, 'ALTER MATERIALIZE COLUMN' = 15, 'ALTER COLUMN' = 16, 'ALTER MODIFY COMMENT' = 17, 'ALTER ORDER BY' = 18, 'ALTER SAMPLE BY' = 19, 'ALTER ADD INDEX' = 20, 'ALTER DROP INDEX' = 21, 'ALTER MATERIALIZE INDEX' = 22, 'ALTER CLEAR INDEX' = 23, 'ALTER INDEX' = 24, 'ALTER ADD PROJECTION' = 25, 'ALTER DROP PROJECTION' = 26, 'ALTER MATERIALIZE PROJECTION' = 27, 'ALTER CLEAR PROJECTION' = 28, 'ALTER PROJECTION' = 29, 'ALTER ADD CONSTRAINT' = 30, 'ALTER DROP CONSTRAINT' = 31, 'ALTER CONSTRAINT' = 32, 'ALTER TTL' = 33, 'ALTER MATERIALIZE TTL' = 34, 'ALTER SETTINGS' = 35, 'ALTER MOVE PARTITION' = 36, 'ALTER FETCH PARTITION' = 37, 'ALTER FREEZE PARTITION' = 38, 'ALTER DATABASE SETTINGS' = 39, 'ALTER TABLE' = 40, 'ALTER DATABASE' = 41, 'ALTER VIEW REFRESH' = 42, 'ALTER VIEW MODIFY QUERY' = 43, 'ALTER VIEW' = 44, 'ALTER' = 45, 'CREATE DATABASE' = 46, 'CREATE TABLE' = 47, 'CREATE VIEW' = 48, 'CREATE DICTIONARY' = 49, 'CREATE TEMPORARY TABLE' = 50, 'CREATE FUNCTION' = 51, 'CREATE' = 52, 'DROP DATABASE' = 53, 'DROP TABLE' = 54, 'DROP VIEW' = 55, 'DROP DICTIONARY' = 56, 'DROP FUNCTION' = 57, 'DROP' = 58, 'TRUNCATE' = 59, 'OPTIMIZE' = 60, 'KILL QUERY' = 61, 'KILL TRANSACTION' = 62, 'MOVE PARTITION BETWEEN SHARDS' = 63, 'CREATE USER' = 64, 'ALTER USER' = 65, 'DROP USER' = 66, 'CREATE ROLE' = 67, 'ALTER ROLE' = 68, 'DROP ROLE' = 69, 'ROLE ADMIN' = 70, 'CREATE ROW POLICY' = 71, 'ALTER ROW POLICY' = 72, 'DROP ROW POLICY' = 73, 'CREATE QUOTA' = 74, 'ALTER QUOTA' = 75, 'DROP QUOTA' = 76, 'CREATE SETTINGS PROFILE' = 77, 'ALTER SETTINGS PROFILE' = 78, 'DROP SETTINGS PROFILE' = 79, 'SHOW USERS' = 80, 'SHOW ROLES' = 81, 'SHOW ROW POLICIES' = 82, 'SHOW QUOTAS' = 83, 'SHOW SETTINGS PROFILES' = 84, 'SHOW ACCESS' = 85, 'ACCESS MANAGEMENT' = 86, 'SYSTEM SHUTDOWN' = 87, 'SYSTEM DROP DNS CACHE' = 88, 'SYSTEM DROP MARK CACHE' = 89, 'SYSTEM DROP UNCOMPRESSED CACHE' = 90, 'SYSTEM DROP MMAP CACHE' = 91, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 92, 'SYSTEM DROP CACHE' = 93, 'SYSTEM RELOAD CONFIG' = 94, 'SYSTEM RELOAD SYMBOLS' = 95, 'SYSTEM RELOAD DICTIONARY' = 96, 'SYSTEM RELOAD MODEL' = 97, 'SYSTEM RELOAD FUNCTION' = 98, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 99, 'SYSTEM RELOAD' = 100, 'SYSTEM RESTART DISK' = 101, 'SYSTEM MERGES' = 102, 'SYSTEM TTL MERGES' = 103, 'SYSTEM FETCHES' = 104, 'SYSTEM MOVES' = 105, 'SYSTEM DISTRIBUTED SENDS' = 106, 'SYSTEM REPLICATED SENDS' = 107, 'SYSTEM SENDS' = 108, 'SYSTEM REPLICATION QUEUES' = 109, 'SYSTEM DROP REPLICA' = 110, 'SYSTEM SYNC REPLICA' = 111, 'SYSTEM RESTART REPLICA' = 112, 'SYSTEM RESTORE REPLICA' = 113, 'SYSTEM FLUSH DISTRIBUTED' = 114, 'SYSTEM FLUSH LOGS' = 115, 'SYSTEM FLUSH' = 116, 'SYSTEM THREAD FUZZER' = 117, 'SYSTEM' = 118, 'dictGet' = 119, 'addressToLine' = 120, 'addressToLineWithInlines' = 121, 'addressToSymbol' = 122, 'demangle' = 123, 'INTROSPECTION' = 124, 'FILE' = 125, 'URL' = 126, 'REMOTE' = 127, 'MONGO' = 128, 'MYSQL' = 129, 'POSTGRES' = 130, 'SQLITE' = 131, 'ODBC' = 132, 'JDBC' = 133, 'HDFS' = 134, 'S3' = 135, 'HIVE' = 136, 'SOURCES' = 137, 'ALL' = 138, 'NONE' = 139),
+    `access_type` Enum16('SHOW DATABASES' = 0, 'SHOW TABLES' = 1, 'SHOW COLUMNS' = 2, 'SHOW DICTIONARIES' = 3, 'SHOW' = 4, 'SELECT' = 5, 'INSERT' = 6, 'ALTER UPDATE' = 7, 'ALTER DELETE' = 8, 'ALTER ADD COLUMN' = 9, 'ALTER MODIFY COLUMN' = 10, 'ALTER DROP COLUMN' = 11, 'ALTER COMMENT COLUMN' = 12, 'ALTER CLEAR COLUMN' = 13, 'ALTER RENAME COLUMN' = 14, 'ALTER MATERIALIZE COLUMN' = 15, 'ALTER COLUMN' = 16, 'ALTER MODIFY COMMENT' = 17, 'ALTER ORDER BY' = 18, 'ALTER SAMPLE BY' = 19, 'ALTER ADD INDEX' = 20, 'ALTER DROP INDEX' = 21, 'ALTER MATERIALIZE INDEX' = 22, 'ALTER CLEAR INDEX' = 23, 'ALTER INDEX' = 24, 'ALTER ADD PROJECTION' = 25, 'ALTER DROP PROJECTION' = 26, 'ALTER MATERIALIZE PROJECTION' = 27, 'ALTER CLEAR PROJECTION' = 28, 'ALTER PROJECTION' = 29, 'ALTER ADD CONSTRAINT' = 30, 'ALTER DROP CONSTRAINT' = 31, 'ALTER CONSTRAINT' = 32, 'ALTER TTL' = 33, 'ALTER MATERIALIZE TTL' = 34, 'ALTER SETTINGS' = 35, 'ALTER MOVE PARTITION' = 36, 'ALTER FETCH PARTITION' = 37, 'ALTER FREEZE PARTITION' = 38, 'ALTER DATABASE SETTINGS' = 39, 'ALTER TABLE' = 40, 'ALTER DATABASE' = 41, 'ALTER VIEW REFRESH' = 42, 'ALTER VIEW MODIFY QUERY' = 43, 'ALTER VIEW' = 44, 'ALTER' = 45, 'CREATE DATABASE' = 46, 'CREATE TABLE' = 47, 'CREATE VIEW' = 48, 'CREATE DICTIONARY' = 49, 'CREATE TEMPORARY TABLE' = 50, 'CREATE FUNCTION' = 51, 'CREATE' = 52, 'DROP DATABASE' = 53, 'DROP TABLE' = 54, 'DROP VIEW' = 55, 'DROP DICTIONARY' = 56, 'DROP FUNCTION' = 57, 'DROP' = 58, 'TRUNCATE' = 59, 'OPTIMIZE' = 60, 'KILL QUERY' = 61, 'KILL TRANSACTION' = 62, 'MOVE PARTITION BETWEEN SHARDS' = 63, 'CREATE USER' = 64, 'ALTER USER' = 65, 'DROP USER' = 66, 'CREATE ROLE' = 67, 'ALTER ROLE' = 68, 'DROP ROLE' = 69, 'ROLE ADMIN' = 70, 'CREATE ROW POLICY' = 71, 'ALTER ROW POLICY' = 72, 'DROP ROW POLICY' = 73, 'CREATE QUOTA' = 74, 'ALTER QUOTA' = 75, 'DROP QUOTA' = 76, 'CREATE SETTINGS PROFILE' = 77, 'ALTER SETTINGS PROFILE' = 78, 'DROP SETTINGS PROFILE' = 79, 'SHOW USERS' = 80, 'SHOW ROLES' = 81, 'SHOW ROW POLICIES' = 82, 'SHOW QUOTAS' = 83, 'SHOW SETTINGS PROFILES' = 84, 'SHOW ACCESS' = 85, 'ACCESS MANAGEMENT' = 86, 'SYSTEM SHUTDOWN' = 87, 'SYSTEM DROP DNS CACHE' = 88, 'SYSTEM DROP MARK CACHE' = 89, 'SYSTEM DROP UNCOMPRESSED CACHE' = 90, 'SYSTEM DROP MMAP CACHE' = 91, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 92, 'SYSTEM DROP CACHE' = 93, 'SYSTEM RELOAD CONFIG' = 94, 'SYSTEM RELOAD SYMBOLS' = 95, 'SYSTEM RELOAD DICTIONARY' = 96, 'SYSTEM RELOAD MODEL' = 97, 'SYSTEM RELOAD FUNCTION' = 98, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 99, 'SYSTEM RELOAD' = 100, 'SYSTEM RESTART DISK' = 101, 'SYSTEM MERGES' = 102, 'SYSTEM TTL MERGES' = 103, 'SYSTEM FETCHES' = 104, 'SYSTEM MOVES' = 105, 'SYSTEM DISTRIBUTED SENDS' = 106, 'SYSTEM REPLICATED SENDS' = 107, 'SYSTEM SENDS' = 108, 'SYSTEM REPLICATION QUEUES' = 109, 'SYSTEM DROP REPLICA' = 110, 'SYSTEM SYNC REPLICA' = 111, 'SYSTEM RESTART REPLICA' = 112, 'SYSTEM RESTORE REPLICA' = 113, 'SYSTEM SYNC DATABASE REPLICA' = 114, 'SYSTEM FLUSH DISTRIBUTED' = 115, 'SYSTEM FLUSH LOGS' = 116, 'SYSTEM FLUSH' = 117, 'SYSTEM THREAD FUZZER' = 118, 'SYSTEM' = 119, 'dictGet' = 120, 'addressToLine' = 121, 'addressToLineWithInlines' = 122, 'addressToSymbol' = 123, 'demangle' = 124, 'INTROSPECTION' = 125, 'FILE' = 126, 'URL' = 127, 'REMOTE' = 128, 'MONGO' = 129, 'MYSQL' = 130, 'POSTGRES' = 131, 'SQLITE' = 132, 'ODBC' = 133, 'JDBC' = 134, 'HDFS' = 135, 'S3' = 136, 'HIVE' = 137, 'SOURCES' = 138, 'ALL' = 139, 'NONE' = 140),
     `database` Nullable(String),
     `table` Nullable(String),
     `column` Nullable(String),
@@ -549,10 +549,10 @@ ENGINE = SystemPartsColumns()
 COMMENT 'SYSTEM TABLE is built on the fly.'
 CREATE TABLE system.privileges
 (
-    `privilege` Enum16('SHOW DATABASES' = 0, 'SHOW TABLES' = 1, 'SHOW COLUMNS' = 2, 'SHOW DICTIONARIES' = 3, 'SHOW' = 4, 'SELECT' = 5, 'INSERT' = 6, 'ALTER UPDATE' = 7, 'ALTER DELETE' = 8, 'ALTER ADD COLUMN' = 9, 'ALTER MODIFY COLUMN' = 10, 'ALTER DROP COLUMN' = 11, 'ALTER COMMENT COLUMN' = 12, 'ALTER CLEAR COLUMN' = 13, 'ALTER RENAME COLUMN' = 14, 'ALTER MATERIALIZE COLUMN' = 15, 'ALTER COLUMN' = 16, 'ALTER MODIFY COMMENT' = 17, 'ALTER ORDER BY' = 18, 'ALTER SAMPLE BY' = 19, 'ALTER ADD INDEX' = 20, 'ALTER DROP INDEX' = 21, 'ALTER MATERIALIZE INDEX' = 22, 'ALTER CLEAR INDEX' = 23, 'ALTER INDEX' = 24, 'ALTER ADD PROJECTION' = 25, 'ALTER DROP PROJECTION' = 26, 'ALTER MATERIALIZE PROJECTION' = 27, 'ALTER CLEAR PROJECTION' = 28, 'ALTER PROJECTION' = 29, 'ALTER ADD CONSTRAINT' = 30, 'ALTER DROP CONSTRAINT' = 31, 'ALTER CONSTRAINT' = 32, 'ALTER TTL' = 33, 'ALTER MATERIALIZE TTL' = 34, 'ALTER SETTINGS' = 35, 'ALTER MOVE PARTITION' = 36, 'ALTER FETCH PARTITION' = 37, 'ALTER FREEZE PARTITION' = 38, 'ALTER DATABASE SETTINGS' = 39, 'ALTER TABLE' = 40, 'ALTER DATABASE' = 41, 'ALTER VIEW REFRESH' = 42, 'ALTER VIEW MODIFY QUERY' = 43, 'ALTER VIEW' = 44, 'ALTER' = 45, 'CREATE DATABASE' = 46, 'CREATE TABLE' = 47, 'CREATE VIEW' = 48, 'CREATE DICTIONARY' = 49, 'CREATE TEMPORARY TABLE' = 50, 'CREATE FUNCTION' = 51, 'CREATE' = 52, 'DROP DATABASE' = 53, 'DROP TABLE' = 54, 'DROP VIEW' = 55, 'DROP DICTIONARY' = 56, 'DROP FUNCTION' = 57, 'DROP' = 58, 'TRUNCATE' = 59, 'OPTIMIZE' = 60, 'KILL QUERY' = 61, 'KILL TRANSACTION' = 62, 'MOVE PARTITION BETWEEN SHARDS' = 63, 'CREATE USER' = 64, 'ALTER USER' = 65, 'DROP USER' = 66, 'CREATE ROLE' = 67, 'ALTER ROLE' = 68, 'DROP ROLE' = 69, 'ROLE ADMIN' = 70, 'CREATE ROW POLICY' = 71, 'ALTER ROW POLICY' = 72, 'DROP ROW POLICY' = 73, 'CREATE QUOTA' = 74, 'ALTER QUOTA' = 75, 'DROP QUOTA' = 76, 'CREATE SETTINGS PROFILE' = 77, 'ALTER SETTINGS PROFILE' = 78, 'DROP SETTINGS PROFILE' = 79, 'SHOW USERS' = 80, 'SHOW ROLES' = 81, 'SHOW ROW POLICIES' = 82, 'SHOW QUOTAS' = 83, 'SHOW SETTINGS PROFILES' = 84, 'SHOW ACCESS' = 85, 'ACCESS MANAGEMENT' = 86, 'SYSTEM SHUTDOWN' = 87, 'SYSTEM DROP DNS CACHE' = 88, 'SYSTEM DROP MARK CACHE' = 89, 'SYSTEM DROP UNCOMPRESSED CACHE' = 90, 'SYSTEM DROP MMAP CACHE' = 91, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 92, 'SYSTEM DROP CACHE' = 93, 'SYSTEM RELOAD CONFIG' = 94, 'SYSTEM RELOAD SYMBOLS' = 95, 'SYSTEM RELOAD DICTIONARY' = 96, 'SYSTEM RELOAD MODEL' = 97, 'SYSTEM RELOAD FUNCTION' = 98, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 99, 'SYSTEM RELOAD' = 100, 'SYSTEM RESTART DISK' = 101, 'SYSTEM MERGES' = 102, 'SYSTEM TTL MERGES' = 103, 'SYSTEM FETCHES' = 104, 'SYSTEM MOVES' = 105, 'SYSTEM DISTRIBUTED SENDS' = 106, 'SYSTEM REPLICATED SENDS' = 107, 'SYSTEM SENDS' = 108, 'SYSTEM REPLICATION QUEUES' = 109, 'SYSTEM DROP REPLICA' = 110, 'SYSTEM SYNC REPLICA' = 111, 'SYSTEM RESTART REPLICA' = 112, 'SYSTEM RESTORE REPLICA' = 113, 'SYSTEM FLUSH DISTRIBUTED' = 114, 'SYSTEM FLUSH LOGS' = 115, 'SYSTEM FLUSH' = 116, 'SYSTEM THREAD FUZZER' = 117, 'SYSTEM' = 118, 'dictGet' = 119, 'addressToLine' = 120, 'addressToLineWithInlines' = 121, 'addressToSymbol' = 122, 'demangle' = 123, 'INTROSPECTION' = 124, 'FILE' = 125, 'URL' = 126, 'REMOTE' = 127, 'MONGO' = 128, 'MYSQL' = 129, 'POSTGRES' = 130, 'SQLITE' = 131, 'ODBC' = 132, 'JDBC' = 133, 'HDFS' = 134, 'S3' = 135, 'HIVE' = 136, 'SOURCES' = 137, 'ALL' = 138, 'NONE' = 139),
+    `privilege` Enum16('SHOW DATABASES' = 0, 'SHOW TABLES' = 1, 'SHOW COLUMNS' = 2, 'SHOW DICTIONARIES' = 3, 'SHOW' = 4, 'SELECT' = 5, 'INSERT' = 6, 'ALTER UPDATE' = 7, 'ALTER DELETE' = 8, 'ALTER ADD COLUMN' = 9, 'ALTER MODIFY COLUMN' = 10, 'ALTER DROP COLUMN' = 11, 'ALTER COMMENT COLUMN' = 12, 'ALTER CLEAR COLUMN' = 13, 'ALTER RENAME COLUMN' = 14, 'ALTER MATERIALIZE COLUMN' = 15, 'ALTER COLUMN' = 16, 'ALTER MODIFY COMMENT' = 17, 'ALTER ORDER BY' = 18, 'ALTER SAMPLE BY' = 19, 'ALTER ADD INDEX' = 20, 'ALTER DROP INDEX' = 21, 'ALTER MATERIALIZE INDEX' = 22, 'ALTER CLEAR INDEX' = 23, 'ALTER INDEX' = 24, 'ALTER ADD PROJECTION' = 25, 'ALTER DROP PROJECTION' = 26, 'ALTER MATERIALIZE PROJECTION' = 27, 'ALTER CLEAR PROJECTION' = 28, 'ALTER PROJECTION' = 29, 'ALTER ADD CONSTRAINT' = 30, 'ALTER DROP CONSTRAINT' = 31, 'ALTER CONSTRAINT' = 32, 'ALTER TTL' = 33, 'ALTER MATERIALIZE TTL' = 34, 'ALTER SETTINGS' = 35, 'ALTER MOVE PARTITION' = 36, 'ALTER FETCH PARTITION' = 37, 'ALTER FREEZE PARTITION' = 38, 'ALTER DATABASE SETTINGS' = 39, 'ALTER TABLE' = 40, 'ALTER DATABASE' = 41, 'ALTER VIEW REFRESH' = 42, 'ALTER VIEW MODIFY QUERY' = 43, 'ALTER VIEW' = 44, 'ALTER' = 45, 'CREATE DATABASE' = 46, 'CREATE TABLE' = 47, 'CREATE VIEW' = 48, 'CREATE DICTIONARY' = 49, 'CREATE TEMPORARY TABLE' = 50, 'CREATE FUNCTION' = 51, 'CREATE' = 52, 'DROP DATABASE' = 53, 'DROP TABLE' = 54, 'DROP VIEW' = 55, 'DROP DICTIONARY' = 56, 'DROP FUNCTION' = 57, 'DROP' = 58, 'TRUNCATE' = 59, 'OPTIMIZE' = 60, 'KILL QUERY' = 61, 'KILL TRANSACTION' = 62, 'MOVE PARTITION BETWEEN SHARDS' = 63, 'CREATE USER' = 64, 'ALTER USER' = 65, 'DROP USER' = 66, 'CREATE ROLE' = 67, 'ALTER ROLE' = 68, 'DROP ROLE' = 69, 'ROLE ADMIN' = 70, 'CREATE ROW POLICY' = 71, 'ALTER ROW POLICY' = 72, 'DROP ROW POLICY' = 73, 'CREATE QUOTA' = 74, 'ALTER QUOTA' = 75, 'DROP QUOTA' = 76, 'CREATE SETTINGS PROFILE' = 77, 'ALTER SETTINGS PROFILE' = 78, 'DROP SETTINGS PROFILE' = 79, 'SHOW USERS' = 80, 'SHOW ROLES' = 81, 'SHOW ROW POLICIES' = 82, 'SHOW QUOTAS' = 83, 'SHOW SETTINGS PROFILES' = 84, 'SHOW ACCESS' = 85, 'ACCESS MANAGEMENT' = 86, 'SYSTEM SHUTDOWN' = 87, 'SYSTEM DROP DNS CACHE' = 88, 'SYSTEM DROP MARK CACHE' = 89, 'SYSTEM DROP UNCOMPRESSED CACHE' = 90, 'SYSTEM DROP MMAP CACHE' = 91, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 92, 'SYSTEM DROP CACHE' = 93, 'SYSTEM RELOAD CONFIG' = 94, 'SYSTEM RELOAD SYMBOLS' = 95, 'SYSTEM RELOAD DICTIONARY' = 96, 'SYSTEM RELOAD MODEL' = 97, 'SYSTEM RELOAD FUNCTION' = 98, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 99, 'SYSTEM RELOAD' = 100, 'SYSTEM RESTART DISK' = 101, 'SYSTEM MERGES' = 102, 'SYSTEM TTL MERGES' = 103, 'SYSTEM FETCHES' = 104, 'SYSTEM MOVES' = 105, 'SYSTEM DISTRIBUTED SENDS' = 106, 'SYSTEM REPLICATED SENDS' = 107, 'SYSTEM SENDS' = 108, 'SYSTEM REPLICATION QUEUES' = 109, 'SYSTEM DROP REPLICA' = 110, 'SYSTEM SYNC REPLICA' = 111, 'SYSTEM RESTART REPLICA' = 112, 'SYSTEM RESTORE REPLICA' = 113, 'SYSTEM SYNC DATABASE REPLICA' = 114, 'SYSTEM FLUSH DISTRIBUTED' = 115, 'SYSTEM FLUSH LOGS' = 116, 'SYSTEM FLUSH' = 117, 'SYSTEM THREAD FUZZER' = 118, 'SYSTEM' = 119, 'dictGet' = 120, 'addressToLine' = 121, 'addressToLineWithInlines' = 122, 'addressToSymbol' = 123, 'demangle' = 124, 'INTROSPECTION' = 125, 'FILE' = 126, 'URL' = 127, 'REMOTE' = 128, 'MONGO' = 129, 'MYSQL' = 130, 'POSTGRES' = 131, 'SQLITE' = 132, 'ODBC' = 133, 'JDBC' = 134, 'HDFS' = 135, 'S3' = 136, 'HIVE' = 137, 'SOURCES' = 138, 'ALL' = 139, 'NONE' = 140),
     `aliases` Array(String),
     `level` Nullable(Enum8('GLOBAL' = 0, 'DATABASE' = 1, 'TABLE' = 2, 'DICTIONARY' = 3, 'VIEW' = 4, 'COLUMN' = 5)),
-    `parent_group` Nullable(Enum16('SHOW DATABASES' = 0, 'SHOW TABLES' = 1, 'SHOW COLUMNS' = 2, 'SHOW DICTIONARIES' = 3, 'SHOW' = 4, 'SELECT' = 5, 'INSERT' = 6, 'ALTER UPDATE' = 7, 'ALTER DELETE' = 8, 'ALTER ADD COLUMN' = 9, 'ALTER MODIFY COLUMN' = 10, 'ALTER DROP COLUMN' = 11, 'ALTER COMMENT COLUMN' = 12, 'ALTER CLEAR COLUMN' = 13, 'ALTER RENAME COLUMN' = 14, 'ALTER MATERIALIZE COLUMN' = 15, 'ALTER COLUMN' = 16, 'ALTER MODIFY COMMENT' = 17, 'ALTER ORDER BY' = 18, 'ALTER SAMPLE BY' = 19, 'ALTER ADD INDEX' = 20, 'ALTER DROP INDEX' = 21, 'ALTER MATERIALIZE INDEX' = 22, 'ALTER CLEAR INDEX' = 23, 'ALTER INDEX' = 24, 'ALTER ADD PROJECTION' = 25, 'ALTER DROP PROJECTION' = 26, 'ALTER MATERIALIZE PROJECTION' = 27, 'ALTER CLEAR PROJECTION' = 28, 'ALTER PROJECTION' = 29, 'ALTER ADD CONSTRAINT' = 30, 'ALTER DROP CONSTRAINT' = 31, 'ALTER CONSTRAINT' = 32, 'ALTER TTL' = 33, 'ALTER MATERIALIZE TTL' = 34, 'ALTER SETTINGS' = 35, 'ALTER MOVE PARTITION' = 36, 'ALTER FETCH PARTITION' = 37, 'ALTER FREEZE PARTITION' = 38, 'ALTER DATABASE SETTINGS' = 39, 'ALTER TABLE' = 40, 'ALTER DATABASE' = 41, 'ALTER VIEW REFRESH' = 42, 'ALTER VIEW MODIFY QUERY' = 43, 'ALTER VIEW' = 44, 'ALTER' = 45, 'CREATE DATABASE' = 46, 'CREATE TABLE' = 47, 'CREATE VIEW' = 48, 'CREATE DICTIONARY' = 49, 'CREATE TEMPORARY TABLE' = 50, 'CREATE FUNCTION' = 51, 'CREATE' = 52, 'DROP DATABASE' = 53, 'DROP TABLE' = 54, 'DROP VIEW' = 55, 'DROP DICTIONARY' = 56, 'DROP FUNCTION' = 57, 'DROP' = 58, 'TRUNCATE' = 59, 'OPTIMIZE' = 60, 'KILL QUERY' = 61, 'KILL TRANSACTION' = 62, 'MOVE PARTITION BETWEEN SHARDS' = 63, 'CREATE USER' = 64, 'ALTER USER' = 65, 'DROP USER' = 66, 'CREATE ROLE' = 67, 'ALTER ROLE' = 68, 'DROP ROLE' = 69, 'ROLE ADMIN' = 70, 'CREATE ROW POLICY' = 71, 'ALTER ROW POLICY' = 72, 'DROP ROW POLICY' = 73, 'CREATE QUOTA' = 74, 'ALTER QUOTA' = 75, 'DROP QUOTA' = 76, 'CREATE SETTINGS PROFILE' = 77, 'ALTER SETTINGS PROFILE' = 78, 'DROP SETTINGS PROFILE' = 79, 'SHOW USERS' = 80, 'SHOW ROLES' = 81, 'SHOW ROW POLICIES' = 82, 'SHOW QUOTAS' = 83, 'SHOW SETTINGS PROFILES' = 84, 'SHOW ACCESS' = 85, 'ACCESS MANAGEMENT' = 86, 'SYSTEM SHUTDOWN' = 87, 'SYSTEM DROP DNS CACHE' = 88, 'SYSTEM DROP MARK CACHE' = 89, 'SYSTEM DROP UNCOMPRESSED CACHE' = 90, 'SYSTEM DROP MMAP CACHE' = 91, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 92, 'SYSTEM DROP CACHE' = 93, 'SYSTEM RELOAD CONFIG' = 94, 'SYSTEM RELOAD SYMBOLS' = 95, 'SYSTEM RELOAD DICTIONARY' = 96, 'SYSTEM RELOAD MODEL' = 97, 'SYSTEM RELOAD FUNCTION' = 98, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 99, 'SYSTEM RELOAD' = 100, 'SYSTEM RESTART DISK' = 101, 'SYSTEM MERGES' = 102, 'SYSTEM TTL MERGES' = 103, 'SYSTEM FETCHES' = 104, 'SYSTEM MOVES' = 105, 'SYSTEM DISTRIBUTED SENDS' = 106, 'SYSTEM REPLICATED SENDS' = 107, 'SYSTEM SENDS' = 108, 'SYSTEM REPLICATION QUEUES' = 109, 'SYSTEM DROP REPLICA' = 110, 'SYSTEM SYNC REPLICA' = 111, 'SYSTEM RESTART REPLICA' = 112, 'SYSTEM RESTORE REPLICA' = 113, 'SYSTEM FLUSH DISTRIBUTED' = 114, 'SYSTEM FLUSH LOGS' = 115, 'SYSTEM FLUSH' = 116, 'SYSTEM THREAD FUZZER' = 117, 'SYSTEM' = 118, 'dictGet' = 119, 'addressToLine' = 120, 'addressToLineWithInlines' = 121, 'addressToSymbol' = 122, 'demangle' = 123, 'INTROSPECTION' = 124, 'FILE' = 125, 'URL' = 126, 'REMOTE' = 127, 'MONGO' = 128, 'MYSQL' = 129, 'POSTGRES' = 130, 'SQLITE' = 131, 'ODBC' = 132, 'JDBC' = 133, 'HDFS' = 134, 'S3' = 135, 'HIVE' = 136, 'SOURCES' = 137, 'ALL' = 138, 'NONE' = 139))
+    `parent_group` Nullable(Enum16('SHOW DATABASES' = 0, 'SHOW TABLES' = 1, 'SHOW COLUMNS' = 2, 'SHOW DICTIONARIES' = 3, 'SHOW' = 4, 'SELECT' = 5, 'INSERT' = 6, 'ALTER UPDATE' = 7, 'ALTER DELETE' = 8, 'ALTER ADD COLUMN' = 9, 'ALTER MODIFY COLUMN' = 10, 'ALTER DROP COLUMN' = 11, 'ALTER COMMENT COLUMN' = 12, 'ALTER CLEAR COLUMN' = 13, 'ALTER RENAME COLUMN' = 14, 'ALTER MATERIALIZE COLUMN' = 15, 'ALTER COLUMN' = 16, 'ALTER MODIFY COMMENT' = 17, 'ALTER ORDER BY' = 18, 'ALTER SAMPLE BY' = 19, 'ALTER ADD INDEX' = 20, 'ALTER DROP INDEX' = 21, 'ALTER MATERIALIZE INDEX' = 22, 'ALTER CLEAR INDEX' = 23, 'ALTER INDEX' = 24, 'ALTER ADD PROJECTION' = 25, 'ALTER DROP PROJECTION' = 26, 'ALTER MATERIALIZE PROJECTION' = 27, 'ALTER CLEAR PROJECTION' = 28, 'ALTER PROJECTION' = 29, 'ALTER ADD CONSTRAINT' = 30, 'ALTER DROP CONSTRAINT' = 31, 'ALTER CONSTRAINT' = 32, 'ALTER TTL' = 33, 'ALTER MATERIALIZE TTL' = 34, 'ALTER SETTINGS' = 35, 'ALTER MOVE PARTITION' = 36, 'ALTER FETCH PARTITION' = 37, 'ALTER FREEZE PARTITION' = 38, 'ALTER DATABASE SETTINGS' = 39, 'ALTER TABLE' = 40, 'ALTER DATABASE' = 41, 'ALTER VIEW REFRESH' = 42, 'ALTER VIEW MODIFY QUERY' = 43, 'ALTER VIEW' = 44, 'ALTER' = 45, 'CREATE DATABASE' = 46, 'CREATE TABLE' = 47, 'CREATE VIEW' = 48, 'CREATE DICTIONARY' = 49, 'CREATE TEMPORARY TABLE' = 50, 'CREATE FUNCTION' = 51, 'CREATE' = 52, 'DROP DATABASE' = 53, 'DROP TABLE' = 54, 'DROP VIEW' = 55, 'DROP DICTIONARY' = 56, 'DROP FUNCTION' = 57, 'DROP' = 58, 'TRUNCATE' = 59, 'OPTIMIZE' = 60, 'KILL QUERY' = 61, 'KILL TRANSACTION' = 62, 'MOVE PARTITION BETWEEN SHARDS' = 63, 'CREATE USER' = 64, 'ALTER USER' = 65, 'DROP USER' = 66, 'CREATE ROLE' = 67, 'ALTER ROLE' = 68, 'DROP ROLE' = 69, 'ROLE ADMIN' = 70, 'CREATE ROW POLICY' = 71, 'ALTER ROW POLICY' = 72, 'DROP ROW POLICY' = 73, 'CREATE QUOTA' = 74, 'ALTER QUOTA' = 75, 'DROP QUOTA' = 76, 'CREATE SETTINGS PROFILE' = 77, 'ALTER SETTINGS PROFILE' = 78, 'DROP SETTINGS PROFILE' = 79, 'SHOW USERS' = 80, 'SHOW ROLES' = 81, 'SHOW ROW POLICIES' = 82, 'SHOW QUOTAS' = 83, 'SHOW SETTINGS PROFILES' = 84, 'SHOW ACCESS' = 85, 'ACCESS MANAGEMENT' = 86, 'SYSTEM SHUTDOWN' = 87, 'SYSTEM DROP DNS CACHE' = 88, 'SYSTEM DROP MARK CACHE' = 89, 'SYSTEM DROP UNCOMPRESSED CACHE' = 90, 'SYSTEM DROP MMAP CACHE' = 91, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 92, 'SYSTEM DROP CACHE' = 93, 'SYSTEM RELOAD CONFIG' = 94, 'SYSTEM RELOAD SYMBOLS' = 95, 'SYSTEM RELOAD DICTIONARY' = 96, 'SYSTEM RELOAD MODEL' = 97, 'SYSTEM RELOAD FUNCTION' = 98, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 99, 'SYSTEM RELOAD' = 100, 'SYSTEM RESTART DISK' = 101, 'SYSTEM MERGES' = 102, 'SYSTEM TTL MERGES' = 103, 'SYSTEM FETCHES' = 104, 'SYSTEM MOVES' = 105, 'SYSTEM DISTRIBUTED SENDS' = 106, 'SYSTEM REPLICATED SENDS' = 107, 'SYSTEM SENDS' = 108, 'SYSTEM REPLICATION QUEUES' = 109, 'SYSTEM DROP REPLICA' = 110, 'SYSTEM SYNC REPLICA' = 111, 'SYSTEM RESTART REPLICA' = 112, 'SYSTEM RESTORE REPLICA' = 113, 'SYSTEM SYNC DATABASE REPLICA' = 114, 'SYSTEM FLUSH DISTRIBUTED' = 115, 'SYSTEM FLUSH LOGS' = 116, 'SYSTEM FLUSH' = 117, 'SYSTEM THREAD FUZZER' = 118, 'SYSTEM' = 119, 'dictGet' = 120, 'addressToLine' = 121, 'addressToLineWithInlines' = 122, 'addressToSymbol' = 123, 'demangle' = 124, 'INTROSPECTION' = 125, 'FILE' = 126, 'URL' = 127, 'REMOTE' = 128, 'MONGO' = 129, 'MYSQL' = 130, 'POSTGRES' = 131, 'SQLITE' = 132, 'ODBC' = 133, 'JDBC' = 134, 'HDFS' = 135, 'S3' = 136, 'HIVE' = 137, 'SOURCES' = 138, 'ALL' = 139, 'NONE' = 140))
 )
 ENGINE = SystemPrivileges()
 COMMENT 'SYSTEM TABLE is built on the fly.'