DROPINDEX[CONCURRENTLY][IFEXISTS]index_name[ CASCADE|RESTRICT ]; In this syntax: index_name You specify the name of the index that you want to remove after theDROP INDEXclause. IF EXISTS Attempting to remove a non-existent index will result in an error. To avoid this, you can use theIF...
Introduction to PostgreSQL DROP TABLESPACE statement The DROP TABLESPACE statement delete a tablespace from a database: Here’s the syntax of the DROP TABLE statement: DROP TABLESPACE [IF EXISTS] tablespace_name; In this syntax: First, specify the name of the tablespace that you want to remove ...
DROP INDEX test_index; Drop Index in MySQL, PostgreSQL, Oracle, SQL Server Drop Index in MySQL [5.7] In MySQL, DROP INDEX drops the index named from the table. This statement is mapped to an ALTER TABLE statement to drop the index. Syntax: DROP INDEX index_name ON tbl_name [algorithm_...
To drop an index created withCREATE UNIQUE INDEX, you do not need to useCASCADE. RESTRICT(Default)Do not drop the indexes if any objects (such asconstraints) depend on them. CONCURRENTLYOptional, no-op syntax for PostgreSQL compatibility. All indexes are dropped concurrently in CockroachDB. ...
Informationen zur Steuerung des Zugriffs zur Ausführung dieses PartiQL-Befehls für bestimmte Tabellen finden Sie unterErste Schritte mit dem Standardberechtigungsmodus in Amazon QLDB. Syntax DROP INDEX "indexId" ONtable_nameWITH (purge = true) ...
Include slow administrative statements in the statements written to the slow query log. Administrative statements includeALTER TABLE,ANALYZE TABLE,CHECK TABLE,CREATE INDEX,DROP INDEX,OPTIMIZE TABLE, andREPAIR TABLE. 代码解读 函数堆栈: #0Query_logger::slow_log_write (this=0xaaaaef99e760<query_logger...
Syntax OceanBase Migration Service (OMS) supports the synchronization of theDROP INDEXstatements. DROP INDEX index_name ON tbl_name [algorithm_option | lock_option] ... algorithm_option: ALGORITHM [=] {DEFAULT | INPLACE | COPY} lock_option: ...
Syntax DROP USER [ IF EXISTS ] name [, ... ] Parameter IF EXISTS Eine Klausel, die angibt, dass der Befehl keine Änderungen ausführen und die Meldung zurückgeben soll, dass der Benutzer nicht vorhanden ist, statt mit einem Fehler beendet zu werden, wenn der angegebene Benutzer ...
CREATE TABLE IF NOT EXISTS table_name ALTER TABLE ADD COLUMN IF NOT EXISTS column_name CREATE INDEX IF NOT EXISTS index_name I do not think it is like RECREATE. I do not want to create it again or modify existing table data. That is not what Adriano said. He just said the RECREATE ...
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