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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