--将所有HY开头的表都生成一个更新触发器的脚本（‘/‘是为了连续创建多个触发器而不报错）
select 
   ‘CREATE OR REPLACE
   TRIGGER ‘||table_name||‘
   BEFORE UPDATE on ‘||table_name||‘
    REFERENCING NEW AS NEW OLD AS OLD
    FOR EACH ROW
     DECLARE
     BEGIN
        IF updating  THEN
           :NEW.C_UPDATE_TIME:= SYSDATE;
           IF :NEW.C_DATA_STATUS=‘‘4‘‘ THEN
             :NEW.C_DATA_STATUS:=‘‘4‘‘;
           ELSE
            :NEW.C_DATA_STATUS:=‘‘2‘‘;
           END IF;
        END IF;
     END;
    /
    alter trigger ‘||table_name||‘ enable;‘ as triggerSql
from tabs where table_name like ‘HY%‘ order by table_name;
--:NEW.C_DATA_STATUS:=‘‘4‘‘中的:=是赋值，‘‘是转义单引号
--查询触发器
select trigger_name from all_triggers where trigger_name like ‘HY%‘;