Add SYSTEM RELOAD USERS command.

programs/server/Server.cpp

@@ -1381,7 +1381,7 @@ int Server::main(const std::vector<std::string> & /*args*/)
     global_context->setConfigReloadCallback([&]()
     {
         main_config_reloader->reload();
-        access_control.reload();
+        access_control.reload(AccessControl::ReloadMode::USERS_CONFIG_ONLY);
     });
 
     /// Limit on total number of concurrently executed queries.

src/Access/AccessControl.cpp

@@ -390,9 +390,9 @@ void AccessControl::addStoragesFromMainConfig(
 }
 
 
-void AccessControl::reload()
+void AccessControl::reload(ReloadMode reload_mode)
 {
-    MultipleAccessStorage::reload();
+    MultipleAccessStorage::reload(reload_mode);
     changes_notifier->sendNotifications();
 }
 

src/Access/AccessControl.h

@@ -99,8 +99,8 @@ public:
                                    const String & config_path,
                                    const zkutil::GetZooKeeper & get_zookeeper_function);
 
-    /// Reloads and updates entities in this storage. This function is used to implement SYSTEM RELOAD CONFIG.
-    void reload() override;
+    /// Reloads and updates all access entities.
+    void reload(ReloadMode reload_mode) override;
 
     using OnChangedHandler = std::function<void(const UUID & /* id */, const AccessEntityPtr & /* new or changed entity, null if removed */)>;
 

src/Access/Common/AccessType.h

@@ -143,6 +143,7 @@ enum class AccessType
     M(SYSTEM_DROP_SCHEMA_CACHE, "SYSTEM DROP SCHEMA CACHE, DROP SCHEMA CACHE", GLOBAL, SYSTEM_DROP_CACHE) \
     M(SYSTEM_DROP_CACHE, "DROP CACHE", GROUP, SYSTEM) \
     M(SYSTEM_RELOAD_CONFIG, "RELOAD CONFIG", GLOBAL, SYSTEM_RELOAD) \
+    M(SYSTEM_RELOAD_USERS, "RELOAD USERS", GLOBAL, SYSTEM_RELOAD) \
     M(SYSTEM_RELOAD_SYMBOLS, "RELOAD SYMBOLS", GLOBAL, SYSTEM_RELOAD) \
     M(SYSTEM_RELOAD_DICTIONARY, "SYSTEM RELOAD DICTIONARIES, RELOAD DICTIONARY, RELOAD DICTIONARIES", GLOBAL, SYSTEM_RELOAD) \
     M(SYSTEM_RELOAD_MODEL, "SYSTEM RELOAD MODELS, RELOAD MODEL, RELOAD MODELS", GLOBAL, SYSTEM_RELOAD) \

src/Access/DiskAccessStorage.cpp

@@ -421,15 +421,13 @@ void DiskAccessStorage::removeAllExceptInMemory(const boost::container::flat_set
 }
 
 
-
-void DiskAccessStorage::reload()
+void DiskAccessStorage::reload(ReloadMode reload_mode)
 {
-    /// TODO: Disabled because reload() is called by SYSTEM RELOAD CONFIG and replicated access storage is not a config-based.
-    /// We need a separate SYSTEM RELOAD USERS command.
-#if 0
+    if (reload_mode != ReloadMode::ALL)
+        return;
+
     std::lock_guard lock{mutex};
     reloadAllAndRebuildLists();
-#endif
 }
 
 

src/Access/DiskAccessStorage.h

@@ -27,7 +27,7 @@ public:
     void setReadOnly(bool readonly_) { readonly = readonly_; }
     bool isReadOnly() const override { return readonly; }
 
-    void reload() override;
+    void reload(ReloadMode reload_mode) override;
 
     bool exists(const UUID & id) const override;
 

src/Access/IAccessStorage.h

@@ -42,15 +42,26 @@ public:
     /// Returns true if this entity is readonly.
     virtual bool isReadOnly(const UUID &) const { return isReadOnly(); }
 
-    /// Reloads and updates entities in this storage. This function is used to implement SYSTEM RELOAD CONFIG.
-    virtual void reload() {}
-
     /// Starts periodic reloading and updating of entities in this storage.
     virtual void startPeriodicReloading() {}
 
     /// Stops periodic reloading and updating of entities in this storage.
     virtual void stopPeriodicReloading() {}
 
+    enum class ReloadMode
+    {
+        /// Try to reload all access storages (including users.xml, local(disk) access storage, replicated(in zk) access storage.
+        /// This mode is invoked by the SYSTEM RELOAD USERS command.
+        ALL,
+
+        /// Only reloads users.xml
+        /// This mode is invoked by the SYSTEM RELOAD CONFIG command.
+        USERS_CONFIG_ONLY,
+    };
+
+    /// Makes this storage to reload and update access entities right now.
+    virtual void reload(ReloadMode /* reload_mode */) {}
+
     /// Returns the identifiers of all the entities of a specified type contained in the storage.
     std::vector<UUID> findAll(AccessEntityType type) const;
 

src/Access/MultipleAccessStorage.cpp

@@ -223,13 +223,6 @@ bool MultipleAccessStorage::isReadOnly(const UUID & id) const
 }
 
 
-void MultipleAccessStorage::reload()
-{
-    auto storages = getStoragesInternal();
-    for (const auto & storage : *storages)
-        storage->reload();
-}
-
 void MultipleAccessStorage::startPeriodicReloading()
 {
     auto storages = getStoragesInternal();
@@ -244,6 +237,13 @@ void MultipleAccessStorage::stopPeriodicReloading()
         storage->stopPeriodicReloading();
 }
 
+void MultipleAccessStorage::reload(ReloadMode reload_mode)
+{
+    auto storages = getStoragesInternal();
+    for (const auto & storage : *storages)
+        storage->reload(reload_mode);
+}
+
 
 std::optional<UUID> MultipleAccessStorage::insertImpl(const AccessEntityPtr & entity, bool replace_if_exists, bool throw_if_exists)
 {

src/Access/MultipleAccessStorage.h

@@ -25,9 +25,9 @@ public:
     bool isReadOnly() const override;
     bool isReadOnly(const UUID & id) const override;
 
-    void reload() override;
     void startPeriodicReloading() override;
     void stopPeriodicReloading() override;
+    void reload(ReloadMode reload_mode) override;
 
     void setStorages(const std::vector<StoragePtr> & storages);
     void addStorage(const StoragePtr & new_storage);

src/Access/QuotaCache.cpp

@@ -301,4 +301,5 @@ std::vector<QuotaUsage> QuotaCache::getAllQuotasUsage() const
     }
     return all_usage;
 }
+
 }

src/Access/ReplicatedAccessStorage.cpp

@@ -444,16 +444,15 @@ zkutil::ZooKeeperPtr ReplicatedAccessStorage::getZooKeeperNoLock()
     return cached_zookeeper;
 }
 
-void ReplicatedAccessStorage::reload()
+void ReplicatedAccessStorage::reload(ReloadMode reload_mode)
 {
-    /// TODO: Disabled because reload() is called by SYSTEM RELOAD CONFIG and replicated access storage is not a config-based.
-    /// We need a separate SYSTEM RELOAD USERS command.
-#if 0
+    if (reload_mode != ReloadMode::ALL)
+        return;
+
     /// Reinitialize ZooKeeper and reread everything.
     std::lock_guard lock{cached_zookeeper_mutex};
     cached_zookeeper = nullptr;
     getZooKeeperNoLock();
-#endif
 }
 
 void ReplicatedAccessStorage::createRootNodes(const zkutil::ZooKeeperPtr & zookeeper)

src/Access/ReplicatedAccessStorage.h

@@ -25,9 +25,9 @@ public:
 
     const char * getStorageType() const override { return STORAGE_TYPE; }
 
-    void reload() override;
     void startPeriodicReloading() override { startWatchingThread(); }
     void stopPeriodicReloading() override { stopWatchingThread(); }
+    void reload(ReloadMode reload_mode) override;
 
     bool exists(const UUID & id) const override;
 

src/Access/UsersConfigAccessStorage.cpp

@@ -635,13 +635,6 @@ void UsersConfigAccessStorage::load(
         /* already_loaded = */ false);
 }
 
-void UsersConfigAccessStorage::reload()
-{
-    std::lock_guard lock{load_mutex};
-    if (config_reloader)
-        config_reloader->reload();
-}
-
 void UsersConfigAccessStorage::startPeriodicReloading()
 {
     std::lock_guard lock{load_mutex};
@@ -656,6 +649,13 @@ void UsersConfigAccessStorage::stopPeriodicReloading()
         config_reloader->stop();
 }
 
+void UsersConfigAccessStorage::reload(ReloadMode /* reload_mode */)
+{
+    std::lock_guard lock{load_mutex};
+    if (config_reloader)
+        config_reloader->reload();
+}
+
 std::optional<UUID> UsersConfigAccessStorage::findImpl(AccessEntityType type, const String & name) const
 {
     return memory_storage.find(type, name);

src/Access/UsersConfigAccessStorage.h

@@ -38,9 +38,9 @@ public:
               const String & preprocessed_dir = {},
               const zkutil::GetZooKeeper & get_zookeeper_function = {});
 
-    void reload() override;
     void startPeriodicReloading() override;
     void stopPeriodicReloading() override;
+    void reload(ReloadMode reload_mode) override;
 
     bool exists(const UUID & id) const override;
 

src/Interpreters/InterpreterSystemQuery.cpp

@@ -36,6 +36,7 @@
 #include <Interpreters/JIT/CompiledExpressionCache.h>
 #include <Interpreters/TransactionLog.h>
 #include <BridgeHelper/CatBoostLibraryBridgeHelper.h>
+#include <Access/AccessControl.h>
 #include <Access/ContextAccess.h>
 #include <Access/Common/AllowedClientHosts.h>
 #include <Databases/IDatabase.h>
@@ -422,6 +423,10 @@ BlockIO InterpreterSystemQuery::execute()
             getContext()->checkAccess(AccessType::SYSTEM_RELOAD_CONFIG);
             system_context->reloadConfig();
             break;
+        case Type::RELOAD_USERS:
+            getContext()->checkAccess(AccessType::SYSTEM_RELOAD_USERS);
+            system_context->getAccessControl().reload(AccessControl::ReloadMode::ALL);
+            break;
         case Type::RELOAD_SYMBOLS:
         {
 #if defined(__ELF__) && !defined(OS_FREEBSD)
@@ -900,6 +905,11 @@ AccessRightsElements InterpreterSystemQuery::getRequiredAccessForDDLOnCluster()
             required_access.emplace_back(AccessType::SYSTEM_RELOAD_CONFIG);
             break;
         }
+        case Type::RELOAD_USERS:
+        {
+            required_access.emplace_back(AccessType::SYSTEM_RELOAD_USERS);
+            break;
+        }
         case Type::RELOAD_SYMBOLS:
         {
             required_access.emplace_back(AccessType::SYSTEM_RELOAD_SYMBOLS);

src/Parsers/ASTSystemQuery.h

@@ -47,6 +47,7 @@ public:
         RELOAD_FUNCTIONS,
         RELOAD_EMBEDDED_DICTIONARIES,
         RELOAD_CONFIG,
+        RELOAD_USERS,
         RELOAD_SYMBOLS,
         RESTART_DISK,
         STOP_MERGES,

tests/queries/0_stateless/01271_show_privileges.reference

@@ -97,6 +97,7 @@ SYSTEM DROP FILESYSTEM CACHE	['SYSTEM DROP FILESYSTEM CACHE','DROP FILESYSTEM CA
 SYSTEM DROP SCHEMA CACHE	['SYSTEM DROP SCHEMA CACHE','DROP SCHEMA CACHE']	GLOBAL	SYSTEM DROP CACHE
 SYSTEM DROP CACHE	['DROP CACHE']	\N	SYSTEM
 SYSTEM RELOAD CONFIG	['RELOAD CONFIG']	GLOBAL	SYSTEM RELOAD
+SYSTEM RELOAD USERS	['RELOAD USERS']	GLOBAL	SYSTEM RELOAD
 SYSTEM RELOAD SYMBOLS	['RELOAD SYMBOLS']	GLOBAL	SYSTEM RELOAD
 SYSTEM RELOAD DICTIONARY	['SYSTEM RELOAD DICTIONARIES','RELOAD DICTIONARY','RELOAD DICTIONARIES']	GLOBAL	SYSTEM RELOAD
 SYSTEM RELOAD MODEL	['SYSTEM RELOAD MODELS','RELOAD MODEL','RELOAD MODELS']	GLOBAL	SYSTEM RELOAD

tests/queries/0_stateless/02117_show_create_table_system.reference

@@ -279,7 +279,7 @@ 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, 'SHOW CACHES' = 5, 'SELECT' = 6, 'INSERT' = 7, 'ALTER UPDATE' = 8, 'ALTER DELETE' = 9, 'ALTER ADD COLUMN' = 10, 'ALTER MODIFY COLUMN' = 11, 'ALTER DROP COLUMN' = 12, 'ALTER COMMENT COLUMN' = 13, 'ALTER CLEAR COLUMN' = 14, 'ALTER RENAME COLUMN' = 15, 'ALTER MATERIALIZE COLUMN' = 16, 'ALTER COLUMN' = 17, 'ALTER MODIFY COMMENT' = 18, 'ALTER ORDER BY' = 19, 'ALTER SAMPLE BY' = 20, 'ALTER ADD INDEX' = 21, 'ALTER DROP INDEX' = 22, 'ALTER MATERIALIZE INDEX' = 23, 'ALTER CLEAR INDEX' = 24, 'ALTER INDEX' = 25, 'ALTER ADD PROJECTION' = 26, 'ALTER DROP PROJECTION' = 27, 'ALTER MATERIALIZE PROJECTION' = 28, 'ALTER CLEAR PROJECTION' = 29, 'ALTER PROJECTION' = 30, 'ALTER ADD CONSTRAINT' = 31, 'ALTER DROP CONSTRAINT' = 32, 'ALTER CONSTRAINT' = 33, 'ALTER TTL' = 34, 'ALTER MATERIALIZE TTL' = 35, 'ALTER SETTINGS' = 36, 'ALTER MOVE PARTITION' = 37, 'ALTER FETCH PARTITION' = 38, 'ALTER FREEZE PARTITION' = 39, 'ALTER DATABASE SETTINGS' = 40, 'ALTER TABLE' = 41, 'ALTER DATABASE' = 42, 'ALTER VIEW REFRESH' = 43, 'ALTER VIEW MODIFY QUERY' = 44, 'ALTER VIEW' = 45, 'ALTER' = 46, 'CREATE DATABASE' = 47, 'CREATE TABLE' = 48, 'CREATE VIEW' = 49, 'CREATE DICTIONARY' = 50, 'CREATE TEMPORARY TABLE' = 51, 'CREATE FUNCTION' = 52, 'CREATE' = 53, 'DROP DATABASE' = 54, 'DROP TABLE' = 55, 'DROP VIEW' = 56, 'DROP DICTIONARY' = 57, 'DROP FUNCTION' = 58, 'DROP' = 59, 'TRUNCATE' = 60, 'OPTIMIZE' = 61, 'BACKUP' = 62, 'KILL QUERY' = 63, 'KILL TRANSACTION' = 64, 'MOVE PARTITION BETWEEN SHARDS' = 65, 'CREATE USER' = 66, 'ALTER USER' = 67, 'DROP USER' = 68, 'CREATE ROLE' = 69, 'ALTER ROLE' = 70, 'DROP ROLE' = 71, 'ROLE ADMIN' = 72, 'CREATE ROW POLICY' = 73, 'ALTER ROW POLICY' = 74, 'DROP ROW POLICY' = 75, 'CREATE QUOTA' = 76, 'ALTER QUOTA' = 77, 'DROP QUOTA' = 78, 'CREATE SETTINGS PROFILE' = 79, 'ALTER SETTINGS PROFILE' = 80, 'DROP SETTINGS PROFILE' = 81, 'SHOW USERS' = 82, 'SHOW ROLES' = 83, 'SHOW ROW POLICIES' = 84, 'SHOW QUOTAS' = 85, 'SHOW SETTINGS PROFILES' = 86, 'SHOW ACCESS' = 87, 'ACCESS MANAGEMENT' = 88, 'SYSTEM SHUTDOWN' = 89, 'SYSTEM DROP DNS CACHE' = 90, 'SYSTEM DROP MARK CACHE' = 91, 'SYSTEM DROP UNCOMPRESSED CACHE' = 92, 'SYSTEM DROP MMAP CACHE' = 93, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 94, 'SYSTEM DROP FILESYSTEM CACHE' = 95, 'SYSTEM DROP SCHEMA CACHE' = 96, 'SYSTEM DROP CACHE' = 97, 'SYSTEM RELOAD CONFIG' = 98, 'SYSTEM RELOAD SYMBOLS' = 99, 'SYSTEM RELOAD DICTIONARY' = 100, 'SYSTEM RELOAD MODEL' = 101, 'SYSTEM RELOAD FUNCTION' = 102, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 103, 'SYSTEM RELOAD' = 104, 'SYSTEM RESTART DISK' = 105, 'SYSTEM MERGES' = 106, 'SYSTEM TTL MERGES' = 107, 'SYSTEM FETCHES' = 108, 'SYSTEM MOVES' = 109, 'SYSTEM DISTRIBUTED SENDS' = 110, 'SYSTEM REPLICATED SENDS' = 111, 'SYSTEM SENDS' = 112, 'SYSTEM REPLICATION QUEUES' = 113, 'SYSTEM DROP REPLICA' = 114, 'SYSTEM SYNC REPLICA' = 115, 'SYSTEM RESTART REPLICA' = 116, 'SYSTEM RESTORE REPLICA' = 117, 'SYSTEM SYNC DATABASE REPLICA' = 118, 'SYSTEM SYNC TRANSACTION LOG' = 119, 'SYSTEM FLUSH DISTRIBUTED' = 120, 'SYSTEM FLUSH LOGS' = 121, 'SYSTEM FLUSH' = 122, 'SYSTEM THREAD FUZZER' = 123, 'SYSTEM UNFREEZE' = 124, 'SYSTEM' = 125, 'dictGet' = 126, 'addressToLine' = 127, 'addressToLineWithInlines' = 128, 'addressToSymbol' = 129, 'demangle' = 130, 'INTROSPECTION' = 131, 'FILE' = 132, 'URL' = 133, 'REMOTE' = 134, 'MONGO' = 135, 'MEILISEARCH' = 136, 'MYSQL' = 137, 'POSTGRES' = 138, 'SQLITE' = 139, 'ODBC' = 140, 'JDBC' = 141, 'HDFS' = 142, 'S3' = 143, 'HIVE' = 144, 'SOURCES' = 145, 'CLUSTER' = 146, 'ALL' = 147, 'NONE' = 148),
+    `access_type` Enum16('SHOW DATABASES' = 0, 'SHOW TABLES' = 1, 'SHOW COLUMNS' = 2, 'SHOW DICTIONARIES' = 3, 'SHOW' = 4, 'SHOW CACHES' = 5, 'SELECT' = 6, 'INSERT' = 7, 'ALTER UPDATE' = 8, 'ALTER DELETE' = 9, 'ALTER ADD COLUMN' = 10, 'ALTER MODIFY COLUMN' = 11, 'ALTER DROP COLUMN' = 12, 'ALTER COMMENT COLUMN' = 13, 'ALTER CLEAR COLUMN' = 14, 'ALTER RENAME COLUMN' = 15, 'ALTER MATERIALIZE COLUMN' = 16, 'ALTER COLUMN' = 17, 'ALTER MODIFY COMMENT' = 18, 'ALTER ORDER BY' = 19, 'ALTER SAMPLE BY' = 20, 'ALTER ADD INDEX' = 21, 'ALTER DROP INDEX' = 22, 'ALTER MATERIALIZE INDEX' = 23, 'ALTER CLEAR INDEX' = 24, 'ALTER INDEX' = 25, 'ALTER ADD PROJECTION' = 26, 'ALTER DROP PROJECTION' = 27, 'ALTER MATERIALIZE PROJECTION' = 28, 'ALTER CLEAR PROJECTION' = 29, 'ALTER PROJECTION' = 30, 'ALTER ADD CONSTRAINT' = 31, 'ALTER DROP CONSTRAINT' = 32, 'ALTER CONSTRAINT' = 33, 'ALTER TTL' = 34, 'ALTER MATERIALIZE TTL' = 35, 'ALTER SETTINGS' = 36, 'ALTER MOVE PARTITION' = 37, 'ALTER FETCH PARTITION' = 38, 'ALTER FREEZE PARTITION' = 39, 'ALTER DATABASE SETTINGS' = 40, 'ALTER TABLE' = 41, 'ALTER DATABASE' = 42, 'ALTER VIEW REFRESH' = 43, 'ALTER VIEW MODIFY QUERY' = 44, 'ALTER VIEW' = 45, 'ALTER' = 46, 'CREATE DATABASE' = 47, 'CREATE TABLE' = 48, 'CREATE VIEW' = 49, 'CREATE DICTIONARY' = 50, 'CREATE TEMPORARY TABLE' = 51, 'CREATE FUNCTION' = 52, 'CREATE' = 53, 'DROP DATABASE' = 54, 'DROP TABLE' = 55, 'DROP VIEW' = 56, 'DROP DICTIONARY' = 57, 'DROP FUNCTION' = 58, 'DROP' = 59, 'TRUNCATE' = 60, 'OPTIMIZE' = 61, 'BACKUP' = 62, 'KILL QUERY' = 63, 'KILL TRANSACTION' = 64, 'MOVE PARTITION BETWEEN SHARDS' = 65, 'CREATE USER' = 66, 'ALTER USER' = 67, 'DROP USER' = 68, 'CREATE ROLE' = 69, 'ALTER ROLE' = 70, 'DROP ROLE' = 71, 'ROLE ADMIN' = 72, 'CREATE ROW POLICY' = 73, 'ALTER ROW POLICY' = 74, 'DROP ROW POLICY' = 75, 'CREATE QUOTA' = 76, 'ALTER QUOTA' = 77, 'DROP QUOTA' = 78, 'CREATE SETTINGS PROFILE' = 79, 'ALTER SETTINGS PROFILE' = 80, 'DROP SETTINGS PROFILE' = 81, 'SHOW USERS' = 82, 'SHOW ROLES' = 83, 'SHOW ROW POLICIES' = 84, 'SHOW QUOTAS' = 85, 'SHOW SETTINGS PROFILES' = 86, 'SHOW ACCESS' = 87, 'ACCESS MANAGEMENT' = 88, 'SYSTEM SHUTDOWN' = 89, 'SYSTEM DROP DNS CACHE' = 90, 'SYSTEM DROP MARK CACHE' = 91, 'SYSTEM DROP UNCOMPRESSED CACHE' = 92, 'SYSTEM DROP MMAP CACHE' = 93, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 94, 'SYSTEM DROP FILESYSTEM CACHE' = 95, 'SYSTEM DROP SCHEMA CACHE' = 96, 'SYSTEM DROP CACHE' = 97, 'SYSTEM RELOAD CONFIG' = 98, 'SYSTEM RELOAD USERS' = 99, 'SYSTEM RELOAD SYMBOLS' = 100, 'SYSTEM RELOAD DICTIONARY' = 101, 'SYSTEM RELOAD MODEL' = 102, 'SYSTEM RELOAD FUNCTION' = 103, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 104, 'SYSTEM RELOAD' = 105, 'SYSTEM RESTART DISK' = 106, 'SYSTEM MERGES' = 107, 'SYSTEM TTL MERGES' = 108, 'SYSTEM FETCHES' = 109, 'SYSTEM MOVES' = 110, 'SYSTEM DISTRIBUTED SENDS' = 111, 'SYSTEM REPLICATED SENDS' = 112, 'SYSTEM SENDS' = 113, 'SYSTEM REPLICATION QUEUES' = 114, 'SYSTEM DROP REPLICA' = 115, 'SYSTEM SYNC REPLICA' = 116, 'SYSTEM RESTART REPLICA' = 117, 'SYSTEM RESTORE REPLICA' = 118, 'SYSTEM SYNC DATABASE REPLICA' = 119, 'SYSTEM SYNC TRANSACTION LOG' = 120, 'SYSTEM FLUSH DISTRIBUTED' = 121, 'SYSTEM FLUSH LOGS' = 122, 'SYSTEM FLUSH' = 123, 'SYSTEM THREAD FUZZER' = 124, 'SYSTEM UNFREEZE' = 125, 'SYSTEM' = 126, 'dictGet' = 127, 'addressToLine' = 128, 'addressToLineWithInlines' = 129, 'addressToSymbol' = 130, 'demangle' = 131, 'INTROSPECTION' = 132, 'FILE' = 133, 'URL' = 134, 'REMOTE' = 135, 'MONGO' = 136, 'MEILISEARCH' = 137, 'MYSQL' = 138, 'POSTGRES' = 139, 'SQLITE' = 140, 'ODBC' = 141, 'JDBC' = 142, 'HDFS' = 143, 'S3' = 144, 'HIVE' = 145, 'SOURCES' = 146, 'CLUSTER' = 147, 'ALL' = 148, 'NONE' = 149),
     `database` Nullable(String),
     `table` Nullable(String),
     `column` Nullable(String),
@@ -541,10 +541,10 @@ 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, 'SHOW CACHES' = 5, 'SELECT' = 6, 'INSERT' = 7, 'ALTER UPDATE' = 8, 'ALTER DELETE' = 9, 'ALTER ADD COLUMN' = 10, 'ALTER MODIFY COLUMN' = 11, 'ALTER DROP COLUMN' = 12, 'ALTER COMMENT COLUMN' = 13, 'ALTER CLEAR COLUMN' = 14, 'ALTER RENAME COLUMN' = 15, 'ALTER MATERIALIZE COLUMN' = 16, 'ALTER COLUMN' = 17, 'ALTER MODIFY COMMENT' = 18, 'ALTER ORDER BY' = 19, 'ALTER SAMPLE BY' = 20, 'ALTER ADD INDEX' = 21, 'ALTER DROP INDEX' = 22, 'ALTER MATERIALIZE INDEX' = 23, 'ALTER CLEAR INDEX' = 24, 'ALTER INDEX' = 25, 'ALTER ADD PROJECTION' = 26, 'ALTER DROP PROJECTION' = 27, 'ALTER MATERIALIZE PROJECTION' = 28, 'ALTER CLEAR PROJECTION' = 29, 'ALTER PROJECTION' = 30, 'ALTER ADD CONSTRAINT' = 31, 'ALTER DROP CONSTRAINT' = 32, 'ALTER CONSTRAINT' = 33, 'ALTER TTL' = 34, 'ALTER MATERIALIZE TTL' = 35, 'ALTER SETTINGS' = 36, 'ALTER MOVE PARTITION' = 37, 'ALTER FETCH PARTITION' = 38, 'ALTER FREEZE PARTITION' = 39, 'ALTER DATABASE SETTINGS' = 40, 'ALTER TABLE' = 41, 'ALTER DATABASE' = 42, 'ALTER VIEW REFRESH' = 43, 'ALTER VIEW MODIFY QUERY' = 44, 'ALTER VIEW' = 45, 'ALTER' = 46, 'CREATE DATABASE' = 47, 'CREATE TABLE' = 48, 'CREATE VIEW' = 49, 'CREATE DICTIONARY' = 50, 'CREATE TEMPORARY TABLE' = 51, 'CREATE FUNCTION' = 52, 'CREATE' = 53, 'DROP DATABASE' = 54, 'DROP TABLE' = 55, 'DROP VIEW' = 56, 'DROP DICTIONARY' = 57, 'DROP FUNCTION' = 58, 'DROP' = 59, 'TRUNCATE' = 60, 'OPTIMIZE' = 61, 'BACKUP' = 62, 'KILL QUERY' = 63, 'KILL TRANSACTION' = 64, 'MOVE PARTITION BETWEEN SHARDS' = 65, 'CREATE USER' = 66, 'ALTER USER' = 67, 'DROP USER' = 68, 'CREATE ROLE' = 69, 'ALTER ROLE' = 70, 'DROP ROLE' = 71, 'ROLE ADMIN' = 72, 'CREATE ROW POLICY' = 73, 'ALTER ROW POLICY' = 74, 'DROP ROW POLICY' = 75, 'CREATE QUOTA' = 76, 'ALTER QUOTA' = 77, 'DROP QUOTA' = 78, 'CREATE SETTINGS PROFILE' = 79, 'ALTER SETTINGS PROFILE' = 80, 'DROP SETTINGS PROFILE' = 81, 'SHOW USERS' = 82, 'SHOW ROLES' = 83, 'SHOW ROW POLICIES' = 84, 'SHOW QUOTAS' = 85, 'SHOW SETTINGS PROFILES' = 86, 'SHOW ACCESS' = 87, 'ACCESS MANAGEMENT' = 88, 'SYSTEM SHUTDOWN' = 89, 'SYSTEM DROP DNS CACHE' = 90, 'SYSTEM DROP MARK CACHE' = 91, 'SYSTEM DROP UNCOMPRESSED CACHE' = 92, 'SYSTEM DROP MMAP CACHE' = 93, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 94, 'SYSTEM DROP FILESYSTEM CACHE' = 95, 'SYSTEM DROP SCHEMA CACHE' = 96, 'SYSTEM DROP CACHE' = 97, 'SYSTEM RELOAD CONFIG' = 98, 'SYSTEM RELOAD SYMBOLS' = 99, 'SYSTEM RELOAD DICTIONARY' = 100, 'SYSTEM RELOAD MODEL' = 101, 'SYSTEM RELOAD FUNCTION' = 102, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 103, 'SYSTEM RELOAD' = 104, 'SYSTEM RESTART DISK' = 105, 'SYSTEM MERGES' = 106, 'SYSTEM TTL MERGES' = 107, 'SYSTEM FETCHES' = 108, 'SYSTEM MOVES' = 109, 'SYSTEM DISTRIBUTED SENDS' = 110, 'SYSTEM REPLICATED SENDS' = 111, 'SYSTEM SENDS' = 112, 'SYSTEM REPLICATION QUEUES' = 113, 'SYSTEM DROP REPLICA' = 114, 'SYSTEM SYNC REPLICA' = 115, 'SYSTEM RESTART REPLICA' = 116, 'SYSTEM RESTORE REPLICA' = 117, 'SYSTEM SYNC DATABASE REPLICA' = 118, 'SYSTEM SYNC TRANSACTION LOG' = 119, 'SYSTEM FLUSH DISTRIBUTED' = 120, 'SYSTEM FLUSH LOGS' = 121, 'SYSTEM FLUSH' = 122, 'SYSTEM THREAD FUZZER' = 123, 'SYSTEM UNFREEZE' = 124, 'SYSTEM' = 125, 'dictGet' = 126, 'addressToLine' = 127, 'addressToLineWithInlines' = 128, 'addressToSymbol' = 129, 'demangle' = 130, 'INTROSPECTION' = 131, 'FILE' = 132, 'URL' = 133, 'REMOTE' = 134, 'MONGO' = 135, 'MEILISEARCH' = 136, 'MYSQL' = 137, 'POSTGRES' = 138, 'SQLITE' = 139, 'ODBC' = 140, 'JDBC' = 141, 'HDFS' = 142, 'S3' = 143, 'HIVE' = 144, 'SOURCES' = 145, 'CLUSTER' = 146, 'ALL' = 147, 'NONE' = 148),
+    `privilege` Enum16('SHOW DATABASES' = 0, 'SHOW TABLES' = 1, 'SHOW COLUMNS' = 2, 'SHOW DICTIONARIES' = 3, 'SHOW' = 4, 'SHOW CACHES' = 5, 'SELECT' = 6, 'INSERT' = 7, 'ALTER UPDATE' = 8, 'ALTER DELETE' = 9, 'ALTER ADD COLUMN' = 10, 'ALTER MODIFY COLUMN' = 11, 'ALTER DROP COLUMN' = 12, 'ALTER COMMENT COLUMN' = 13, 'ALTER CLEAR COLUMN' = 14, 'ALTER RENAME COLUMN' = 15, 'ALTER MATERIALIZE COLUMN' = 16, 'ALTER COLUMN' = 17, 'ALTER MODIFY COMMENT' = 18, 'ALTER ORDER BY' = 19, 'ALTER SAMPLE BY' = 20, 'ALTER ADD INDEX' = 21, 'ALTER DROP INDEX' = 22, 'ALTER MATERIALIZE INDEX' = 23, 'ALTER CLEAR INDEX' = 24, 'ALTER INDEX' = 25, 'ALTER ADD PROJECTION' = 26, 'ALTER DROP PROJECTION' = 27, 'ALTER MATERIALIZE PROJECTION' = 28, 'ALTER CLEAR PROJECTION' = 29, 'ALTER PROJECTION' = 30, 'ALTER ADD CONSTRAINT' = 31, 'ALTER DROP CONSTRAINT' = 32, 'ALTER CONSTRAINT' = 33, 'ALTER TTL' = 34, 'ALTER MATERIALIZE TTL' = 35, 'ALTER SETTINGS' = 36, 'ALTER MOVE PARTITION' = 37, 'ALTER FETCH PARTITION' = 38, 'ALTER FREEZE PARTITION' = 39, 'ALTER DATABASE SETTINGS' = 40, 'ALTER TABLE' = 41, 'ALTER DATABASE' = 42, 'ALTER VIEW REFRESH' = 43, 'ALTER VIEW MODIFY QUERY' = 44, 'ALTER VIEW' = 45, 'ALTER' = 46, 'CREATE DATABASE' = 47, 'CREATE TABLE' = 48, 'CREATE VIEW' = 49, 'CREATE DICTIONARY' = 50, 'CREATE TEMPORARY TABLE' = 51, 'CREATE FUNCTION' = 52, 'CREATE' = 53, 'DROP DATABASE' = 54, 'DROP TABLE' = 55, 'DROP VIEW' = 56, 'DROP DICTIONARY' = 57, 'DROP FUNCTION' = 58, 'DROP' = 59, 'TRUNCATE' = 60, 'OPTIMIZE' = 61, 'BACKUP' = 62, 'KILL QUERY' = 63, 'KILL TRANSACTION' = 64, 'MOVE PARTITION BETWEEN SHARDS' = 65, 'CREATE USER' = 66, 'ALTER USER' = 67, 'DROP USER' = 68, 'CREATE ROLE' = 69, 'ALTER ROLE' = 70, 'DROP ROLE' = 71, 'ROLE ADMIN' = 72, 'CREATE ROW POLICY' = 73, 'ALTER ROW POLICY' = 74, 'DROP ROW POLICY' = 75, 'CREATE QUOTA' = 76, 'ALTER QUOTA' = 77, 'DROP QUOTA' = 78, 'CREATE SETTINGS PROFILE' = 79, 'ALTER SETTINGS PROFILE' = 80, 'DROP SETTINGS PROFILE' = 81, 'SHOW USERS' = 82, 'SHOW ROLES' = 83, 'SHOW ROW POLICIES' = 84, 'SHOW QUOTAS' = 85, 'SHOW SETTINGS PROFILES' = 86, 'SHOW ACCESS' = 87, 'ACCESS MANAGEMENT' = 88, 'SYSTEM SHUTDOWN' = 89, 'SYSTEM DROP DNS CACHE' = 90, 'SYSTEM DROP MARK CACHE' = 91, 'SYSTEM DROP UNCOMPRESSED CACHE' = 92, 'SYSTEM DROP MMAP CACHE' = 93, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 94, 'SYSTEM DROP FILESYSTEM CACHE' = 95, 'SYSTEM DROP SCHEMA CACHE' = 96, 'SYSTEM DROP CACHE' = 97, 'SYSTEM RELOAD CONFIG' = 98, 'SYSTEM RELOAD USERS' = 99, 'SYSTEM RELOAD SYMBOLS' = 100, 'SYSTEM RELOAD DICTIONARY' = 101, 'SYSTEM RELOAD MODEL' = 102, 'SYSTEM RELOAD FUNCTION' = 103, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 104, 'SYSTEM RELOAD' = 105, 'SYSTEM RESTART DISK' = 106, 'SYSTEM MERGES' = 107, 'SYSTEM TTL MERGES' = 108, 'SYSTEM FETCHES' = 109, 'SYSTEM MOVES' = 110, 'SYSTEM DISTRIBUTED SENDS' = 111, 'SYSTEM REPLICATED SENDS' = 112, 'SYSTEM SENDS' = 113, 'SYSTEM REPLICATION QUEUES' = 114, 'SYSTEM DROP REPLICA' = 115, 'SYSTEM SYNC REPLICA' = 116, 'SYSTEM RESTART REPLICA' = 117, 'SYSTEM RESTORE REPLICA' = 118, 'SYSTEM SYNC DATABASE REPLICA' = 119, 'SYSTEM SYNC TRANSACTION LOG' = 120, 'SYSTEM FLUSH DISTRIBUTED' = 121, 'SYSTEM FLUSH LOGS' = 122, 'SYSTEM FLUSH' = 123, 'SYSTEM THREAD FUZZER' = 124, 'SYSTEM UNFREEZE' = 125, 'SYSTEM' = 126, 'dictGet' = 127, 'addressToLine' = 128, 'addressToLineWithInlines' = 129, 'addressToSymbol' = 130, 'demangle' = 131, 'INTROSPECTION' = 132, 'FILE' = 133, 'URL' = 134, 'REMOTE' = 135, 'MONGO' = 136, 'MEILISEARCH' = 137, 'MYSQL' = 138, 'POSTGRES' = 139, 'SQLITE' = 140, 'ODBC' = 141, 'JDBC' = 142, 'HDFS' = 143, 'S3' = 144, 'HIVE' = 145, 'SOURCES' = 146, 'CLUSTER' = 147, 'ALL' = 148, 'NONE' = 149),
     `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, 'SHOW CACHES' = 5, 'SELECT' = 6, 'INSERT' = 7, 'ALTER UPDATE' = 8, 'ALTER DELETE' = 9, 'ALTER ADD COLUMN' = 10, 'ALTER MODIFY COLUMN' = 11, 'ALTER DROP COLUMN' = 12, 'ALTER COMMENT COLUMN' = 13, 'ALTER CLEAR COLUMN' = 14, 'ALTER RENAME COLUMN' = 15, 'ALTER MATERIALIZE COLUMN' = 16, 'ALTER COLUMN' = 17, 'ALTER MODIFY COMMENT' = 18, 'ALTER ORDER BY' = 19, 'ALTER SAMPLE BY' = 20, 'ALTER ADD INDEX' = 21, 'ALTER DROP INDEX' = 22, 'ALTER MATERIALIZE INDEX' = 23, 'ALTER CLEAR INDEX' = 24, 'ALTER INDEX' = 25, 'ALTER ADD PROJECTION' = 26, 'ALTER DROP PROJECTION' = 27, 'ALTER MATERIALIZE PROJECTION' = 28, 'ALTER CLEAR PROJECTION' = 29, 'ALTER PROJECTION' = 30, 'ALTER ADD CONSTRAINT' = 31, 'ALTER DROP CONSTRAINT' = 32, 'ALTER CONSTRAINT' = 33, 'ALTER TTL' = 34, 'ALTER MATERIALIZE TTL' = 35, 'ALTER SETTINGS' = 36, 'ALTER MOVE PARTITION' = 37, 'ALTER FETCH PARTITION' = 38, 'ALTER FREEZE PARTITION' = 39, 'ALTER DATABASE SETTINGS' = 40, 'ALTER TABLE' = 41, 'ALTER DATABASE' = 42, 'ALTER VIEW REFRESH' = 43, 'ALTER VIEW MODIFY QUERY' = 44, 'ALTER VIEW' = 45, 'ALTER' = 46, 'CREATE DATABASE' = 47, 'CREATE TABLE' = 48, 'CREATE VIEW' = 49, 'CREATE DICTIONARY' = 50, 'CREATE TEMPORARY TABLE' = 51, 'CREATE FUNCTION' = 52, 'CREATE' = 53, 'DROP DATABASE' = 54, 'DROP TABLE' = 55, 'DROP VIEW' = 56, 'DROP DICTIONARY' = 57, 'DROP FUNCTION' = 58, 'DROP' = 59, 'TRUNCATE' = 60, 'OPTIMIZE' = 61, 'BACKUP' = 62, 'KILL QUERY' = 63, 'KILL TRANSACTION' = 64, 'MOVE PARTITION BETWEEN SHARDS' = 65, 'CREATE USER' = 66, 'ALTER USER' = 67, 'DROP USER' = 68, 'CREATE ROLE' = 69, 'ALTER ROLE' = 70, 'DROP ROLE' = 71, 'ROLE ADMIN' = 72, 'CREATE ROW POLICY' = 73, 'ALTER ROW POLICY' = 74, 'DROP ROW POLICY' = 75, 'CREATE QUOTA' = 76, 'ALTER QUOTA' = 77, 'DROP QUOTA' = 78, 'CREATE SETTINGS PROFILE' = 79, 'ALTER SETTINGS PROFILE' = 80, 'DROP SETTINGS PROFILE' = 81, 'SHOW USERS' = 82, 'SHOW ROLES' = 83, 'SHOW ROW POLICIES' = 84, 'SHOW QUOTAS' = 85, 'SHOW SETTINGS PROFILES' = 86, 'SHOW ACCESS' = 87, 'ACCESS MANAGEMENT' = 88, 'SYSTEM SHUTDOWN' = 89, 'SYSTEM DROP DNS CACHE' = 90, 'SYSTEM DROP MARK CACHE' = 91, 'SYSTEM DROP UNCOMPRESSED CACHE' = 92, 'SYSTEM DROP MMAP CACHE' = 93, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 94, 'SYSTEM DROP FILESYSTEM CACHE' = 95, 'SYSTEM DROP SCHEMA CACHE' = 96, 'SYSTEM DROP CACHE' = 97, 'SYSTEM RELOAD CONFIG' = 98, 'SYSTEM RELOAD SYMBOLS' = 99, 'SYSTEM RELOAD DICTIONARY' = 100, 'SYSTEM RELOAD MODEL' = 101, 'SYSTEM RELOAD FUNCTION' = 102, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 103, 'SYSTEM RELOAD' = 104, 'SYSTEM RESTART DISK' = 105, 'SYSTEM MERGES' = 106, 'SYSTEM TTL MERGES' = 107, 'SYSTEM FETCHES' = 108, 'SYSTEM MOVES' = 109, 'SYSTEM DISTRIBUTED SENDS' = 110, 'SYSTEM REPLICATED SENDS' = 111, 'SYSTEM SENDS' = 112, 'SYSTEM REPLICATION QUEUES' = 113, 'SYSTEM DROP REPLICA' = 114, 'SYSTEM SYNC REPLICA' = 115, 'SYSTEM RESTART REPLICA' = 116, 'SYSTEM RESTORE REPLICA' = 117, 'SYSTEM SYNC DATABASE REPLICA' = 118, 'SYSTEM SYNC TRANSACTION LOG' = 119, 'SYSTEM FLUSH DISTRIBUTED' = 120, 'SYSTEM FLUSH LOGS' = 121, 'SYSTEM FLUSH' = 122, 'SYSTEM THREAD FUZZER' = 123, 'SYSTEM UNFREEZE' = 124, 'SYSTEM' = 125, 'dictGet' = 126, 'addressToLine' = 127, 'addressToLineWithInlines' = 128, 'addressToSymbol' = 129, 'demangle' = 130, 'INTROSPECTION' = 131, 'FILE' = 132, 'URL' = 133, 'REMOTE' = 134, 'MONGO' = 135, 'MEILISEARCH' = 136, 'MYSQL' = 137, 'POSTGRES' = 138, 'SQLITE' = 139, 'ODBC' = 140, 'JDBC' = 141, 'HDFS' = 142, 'S3' = 143, 'HIVE' = 144, 'SOURCES' = 145, 'CLUSTER' = 146, 'ALL' = 147, 'NONE' = 148))
+    `parent_group` Nullable(Enum16('SHOW DATABASES' = 0, 'SHOW TABLES' = 1, 'SHOW COLUMNS' = 2, 'SHOW DICTIONARIES' = 3, 'SHOW' = 4, 'SHOW CACHES' = 5, 'SELECT' = 6, 'INSERT' = 7, 'ALTER UPDATE' = 8, 'ALTER DELETE' = 9, 'ALTER ADD COLUMN' = 10, 'ALTER MODIFY COLUMN' = 11, 'ALTER DROP COLUMN' = 12, 'ALTER COMMENT COLUMN' = 13, 'ALTER CLEAR COLUMN' = 14, 'ALTER RENAME COLUMN' = 15, 'ALTER MATERIALIZE COLUMN' = 16, 'ALTER COLUMN' = 17, 'ALTER MODIFY COMMENT' = 18, 'ALTER ORDER BY' = 19, 'ALTER SAMPLE BY' = 20, 'ALTER ADD INDEX' = 21, 'ALTER DROP INDEX' = 22, 'ALTER MATERIALIZE INDEX' = 23, 'ALTER CLEAR INDEX' = 24, 'ALTER INDEX' = 25, 'ALTER ADD PROJECTION' = 26, 'ALTER DROP PROJECTION' = 27, 'ALTER MATERIALIZE PROJECTION' = 28, 'ALTER CLEAR PROJECTION' = 29, 'ALTER PROJECTION' = 30, 'ALTER ADD CONSTRAINT' = 31, 'ALTER DROP CONSTRAINT' = 32, 'ALTER CONSTRAINT' = 33, 'ALTER TTL' = 34, 'ALTER MATERIALIZE TTL' = 35, 'ALTER SETTINGS' = 36, 'ALTER MOVE PARTITION' = 37, 'ALTER FETCH PARTITION' = 38, 'ALTER FREEZE PARTITION' = 39, 'ALTER DATABASE SETTINGS' = 40, 'ALTER TABLE' = 41, 'ALTER DATABASE' = 42, 'ALTER VIEW REFRESH' = 43, 'ALTER VIEW MODIFY QUERY' = 44, 'ALTER VIEW' = 45, 'ALTER' = 46, 'CREATE DATABASE' = 47, 'CREATE TABLE' = 48, 'CREATE VIEW' = 49, 'CREATE DICTIONARY' = 50, 'CREATE TEMPORARY TABLE' = 51, 'CREATE FUNCTION' = 52, 'CREATE' = 53, 'DROP DATABASE' = 54, 'DROP TABLE' = 55, 'DROP VIEW' = 56, 'DROP DICTIONARY' = 57, 'DROP FUNCTION' = 58, 'DROP' = 59, 'TRUNCATE' = 60, 'OPTIMIZE' = 61, 'BACKUP' = 62, 'KILL QUERY' = 63, 'KILL TRANSACTION' = 64, 'MOVE PARTITION BETWEEN SHARDS' = 65, 'CREATE USER' = 66, 'ALTER USER' = 67, 'DROP USER' = 68, 'CREATE ROLE' = 69, 'ALTER ROLE' = 70, 'DROP ROLE' = 71, 'ROLE ADMIN' = 72, 'CREATE ROW POLICY' = 73, 'ALTER ROW POLICY' = 74, 'DROP ROW POLICY' = 75, 'CREATE QUOTA' = 76, 'ALTER QUOTA' = 77, 'DROP QUOTA' = 78, 'CREATE SETTINGS PROFILE' = 79, 'ALTER SETTINGS PROFILE' = 80, 'DROP SETTINGS PROFILE' = 81, 'SHOW USERS' = 82, 'SHOW ROLES' = 83, 'SHOW ROW POLICIES' = 84, 'SHOW QUOTAS' = 85, 'SHOW SETTINGS PROFILES' = 86, 'SHOW ACCESS' = 87, 'ACCESS MANAGEMENT' = 88, 'SYSTEM SHUTDOWN' = 89, 'SYSTEM DROP DNS CACHE' = 90, 'SYSTEM DROP MARK CACHE' = 91, 'SYSTEM DROP UNCOMPRESSED CACHE' = 92, 'SYSTEM DROP MMAP CACHE' = 93, 'SYSTEM DROP COMPILED EXPRESSION CACHE' = 94, 'SYSTEM DROP FILESYSTEM CACHE' = 95, 'SYSTEM DROP SCHEMA CACHE' = 96, 'SYSTEM DROP CACHE' = 97, 'SYSTEM RELOAD CONFIG' = 98, 'SYSTEM RELOAD USERS' = 99, 'SYSTEM RELOAD SYMBOLS' = 100, 'SYSTEM RELOAD DICTIONARY' = 101, 'SYSTEM RELOAD MODEL' = 102, 'SYSTEM RELOAD FUNCTION' = 103, 'SYSTEM RELOAD EMBEDDED DICTIONARIES' = 104, 'SYSTEM RELOAD' = 105, 'SYSTEM RESTART DISK' = 106, 'SYSTEM MERGES' = 107, 'SYSTEM TTL MERGES' = 108, 'SYSTEM FETCHES' = 109, 'SYSTEM MOVES' = 110, 'SYSTEM DISTRIBUTED SENDS' = 111, 'SYSTEM REPLICATED SENDS' = 112, 'SYSTEM SENDS' = 113, 'SYSTEM REPLICATION QUEUES' = 114, 'SYSTEM DROP REPLICA' = 115, 'SYSTEM SYNC REPLICA' = 116, 'SYSTEM RESTART REPLICA' = 117, 'SYSTEM RESTORE REPLICA' = 118, 'SYSTEM SYNC DATABASE REPLICA' = 119, 'SYSTEM SYNC TRANSACTION LOG' = 120, 'SYSTEM FLUSH DISTRIBUTED' = 121, 'SYSTEM FLUSH LOGS' = 122, 'SYSTEM FLUSH' = 123, 'SYSTEM THREAD FUZZER' = 124, 'SYSTEM UNFREEZE' = 125, 'SYSTEM' = 126, 'dictGet' = 127, 'addressToLine' = 128, 'addressToLineWithInlines' = 129, 'addressToSymbol' = 130, 'demangle' = 131, 'INTROSPECTION' = 132, 'FILE' = 133, 'URL' = 134, 'REMOTE' = 135, 'MONGO' = 136, 'MEILISEARCH' = 137, 'MYSQL' = 138, 'POSTGRES' = 139, 'SQLITE' = 140, 'ODBC' = 141, 'JDBC' = 142, 'HDFS' = 143, 'S3' = 144, 'HIVE' = 145, 'SOURCES' = 146, 'CLUSTER' = 147, 'ALL' = 148, 'NONE' = 149))
 )
 ENGINE = SystemPrivileges
 COMMENT 'SYSTEM TABLE is built on the fly.'