SQL> select table_name,index_name,status,blevel,leaf_blocks from user_Indexes where index_name ='IDX_PANDY_ID'; TABLE_NAME INDEX_NAME STATUS BLEVEL LEAF_BLOCKS --- --- --- --- --- P_ANDY IDX_PANDY_ID UNUSABLE 0 1 方式二:truncate 带 update index ,如果表有全局索引,则truncate par...
PostgreSQL DROP INDEX example We will use theactortable from thesample databasefor the demonstration. The following statementcreates an indexfor thefirst_namecolumn of theactortable: CREATEINDEXidx_actor_first_nameONactor (first_name); Sometimes, the query optimizer does not use the index. For ex...
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 ...
case OBJECT_INDEX: if (stmt->concurrent) PreventTransactionChain(isTopLevel, "DROP INDEX CONCURRENTLY"); /* fall through */ case OBJECT_TABLE: case OBJECT_SEQUENCE: case OBJECT_VIEW: case OBJECT_MATVIEW: case OBJECT_FOREIGN_TABLE: RemoveRelations(stmt); break; default: RemoveObjects(stmt); b...
DROP INDEX title_idx; 1. COMPATIBILITY 兼容性 DROP INDEX是 PostgreSQL 语言扩展。 在 SQL 标准里没有索引的规定。 SEE ALSO 参见 CREATE INDEX [create_index(7)] #p# NAME DROP INDEX - remove an index SYNOPSIS 复制 DROP INDEXname[, ...] [ CASCADE | RESTRICT ] ...
If we want to remove the index table 'test_index' of the base table 'agents', the following SQL statement can be used : 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. ...
迁移PostgreSQL 数据库的数据至 OceanBase 社区版 迁移Qdrant 数据库的数据至 OceanBase 社区版 管理数据迁移任务 功能介绍 同步DDL 的支持范围和使用限制 MySQL 数据库至 OceanBase 社区版的同步 DDL MySQL 数据库至 OceanBase 社区版的同步 DDL 概览 创建表 CREATE TABLE 数据类型转换 修改表 ALTER TABLE 清空表 TRU...
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. ...
PostgreSQL Alter Table Exercises: Write a SQL statement to drop the index indx_job_id from job_history table.
In PostgreSQL created indexes will belong to the same schema, as the table, to which the index belongs to. When generating SQL for migration an index name does not currently contain the schema prefix. This is incorrect, since there is no guarantee that the selected schema of the connection,...