ALTER TABLE distributors SET TABLESPACE fasttablespace; ###To move a table to a different schema: ALTER TABLE myschema.distributors SET SCHEMA yourschema; ###To recreate a primary key constraint, without blocking updates while the index is rebuilt: CREATE UNIQUE INDEX CONCURRENTLY dist_id_temp_id...
ALTER OPERATOR — 改变一个操作符的定义 ALTER OPERATOR CLASS — 修改一个操作符表的定义 ALTER ROLE — 修改一个数据库角色 ALTER SCHEMA — 修改一个模式的定义 ALTER SEQUENCE — 更改一个序列生成器的定义 ALTER TABLE — 修改表的定义 ALTER TABLESPACE — 改变一个表空间的定义 ALTER TRIGGER — 改变一...
alter table表名drop CONSTRAINT主键名称; 45.创建表空间 create tablespace空间名称location '路径' 46.查看表结构 select * from information_schema.columns ./postgres -D /usr/local/src/data or ./pg_ctl -D /usr/local/src/data -l logfile start 47.查看数据库大小 ...
If the publication used in the data source was created for specific tables (not all tables), add the heartbeat table to the publication: ALTER PUBLICATION upsolver-publication ADD TABLE <heartbeat_table> Now that you finished configuring PostgreSQL, let’s move to more fun things, like creatin...
To use theALTER TABLE... SPLIT PARTITIONcommand, you must be the table owner or have superuser or administrative privileges. Parameters table_name The name (optionally schema-qualified) of the partitioned table. partition_name The name of...
In Postgres, these are not the same and if you do not explicitly specify a schema, new objects will go to a public schema by default. One concern that can easily be overlooked when considering a move to Postgres is confirming that, if you do not control your applicati...
alter database datafile '/oracle/data/lob_test.dbf' resize 400m ---注:绝大多数情况下,不可能一个表空间中只存放一个CLOB字段,若需要从操作系统级真正释放空间,尚需要shink table或EXP/IMP等操作。 带LOB字段表的移动 对含blob字段表迁移: select 'alter table '||t.table_name ||' move tablespa...
MOVE、REMOVE、ATTACH、DETACH、PRAGMA、REINDEX、CREATE INDEX、DROP INDEX、ALTER TABLE、CREATE TABLE、DROP TABLE、ALTER VIEW、CREATE VIEW、DROP VIEW、ALTER SEQUENCE、CREATE SEQUENCE、DROP SEQUENCE、ALTER TRIGGER、CREATE TRIGGER、DROP TRIGGER、ALTER FUNCTION、CREATE FUNCTION、DROP FUNCTION、ALTER DOMAIN、CREATE...
If any table generates errors, it gets automatically excluded from the replica, so you don’t have to worry about messy interruptions. pg_chameleon can also integrate with Rollbar, making error detection and alerting easy. Schema Management: pg_chameleon also comes with daemonized processes for...
Database Cluster(instance)--》Database--》Schema--》Objects(Table)-->Tuples 2.物理层次关系 Database Cluster --》Tablespaces --》Files --》 Blocks 5.1 表空间概念与数据库关系 在PostgreSQL 中,表空间(tablespace)表示数据文件的存放目录,这些数据文件代表了数据库的对象,例如表或索引。当我们访问表时,...