Postgresql 中文操作指南

dblink_close

dblink_close — 在远程数据库中关闭游标

dblink_close — closes a cursor in a remote database

Synopsis

dblink_close(text cursorname [, bool fail_on_error]) returns text
dblink_close(text connname, text cursorname [, bool fail_on_error]) returns text

Description

dblink_close 关闭先前使用 dblink_open 打开的游标。

dblink_close closes a cursor previously opened with dblink_open.

Arguments

  • connname

    • Name of the connection to use; omit this parameter to use the unnamed connection.

  • cursorname

    • The name of the cursor to close.

  • fail_on_error

    • If true (the default when omitted) then an error thrown on the remote side of the connection causes an error to also be thrown locally. If false, the remote error is locally reported as a NOTICE, and the function’s return value is set to ERROR.

Return Value

返回状态，可能是 OK 或 ERROR 。

Returns status, either OK or ERROR.

Notes

如果 dblink_open 启动了显式事务块，并且这是此连接中剩下的最后一个打开的游标， dblink_close 将发出匹配的 COMMIT 。

If dblink_open started an explicit transaction block, and this is the last remaining open cursor in this connection, dblink_close will issue the matching COMMIT.

Examples

SELECT dblink_connect('dbname=postgres options=-csearch_path=');
 dblink_connect
----------------
 OK
(1 row)

SELECT dblink_open('foo', 'select proname, prosrc from pg_proc');
 dblink_open
-------------
 OK
(1 row)

SELECT dblink_close('foo');
 dblink_close
--------------
 OK
(1 row)