触发器函数

  • pg_get_triggerdef(oid)

    描述:获取触发器的定义信息。

    参数:待查触发器的OID。

    返回值类型:text

    示例:

    openGauss=# select pg_get_triggerdef(oid) from pg_trigger;
                                                                                         pg_get_triggerdef
    --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
     CREATE TRIGGER tg1 BEFORE INSERT ON gtest26 FOR EACH STATEMENT EXECUTE PROCEDURE gtest_trigger_func()
     CREATE TRIGGER tg03 AFTER INSERT ON gtest26 FOR EACH ROW WHEN ((new.a IS NOT NULL)) EXECUTE PROCEDURE gtest_trigger_func()
    (2 rows)
    
  • pg_get_triggerdef(oid, boolean)

    描述:获取触发器的定义信息。

    参数:待查触发器的OID及是否以pretty方式展示。

    说明:

仅在创建trigger时指定WHEN条件的情况下,布尔类型参数才生效。

返回值类型:text

示例:

```
openGauss=# select pg_get_triggerdef(oid,true) from pg_trigger;
                                                                                     pg_get_triggerdef
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 CREATE TRIGGER tg1 BEFORE INSERT ON gtest26 FOR EACH STATEMENT EXECUTE PROCEDURE gtest_trigger_func()
 CREATE TRIGGER tg03 AFTER INSERT ON gtest26 FOR EACH ROW WHEN (new.a IS NOT NULL) EXECUTE PROCEDURE gtest_trigger_func()
(2 rows)

openGauss=# select pg_get_triggerdef(oid,false) from pg_trigger;
                                                                                     pg_get_triggerdef
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 CREATE TRIGGER tg1 BEFORE INSERT ON gtest26 FOR EACH STATEMENT EXECUTE PROCEDURE gtest_trigger_func()
 CREATE TRIGGER tg03 AFTER INSERT ON gtest26 FOR EACH ROW WHEN ((new.a IS NOT NULL)) EXECUTE PROCEDURE gtest_trigger_func()
(2 rows)
```
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编组 3备份
    openGauss 2024-10-03 04:45:44
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