Oracle触发器_trigger_高级

1.设置不同时间触发的效果
PS: 为达到 见名知意 的效果, 建议统一命名规则, 触发器以 TRG_ 开头, 函数以 F_ 开头

--创建触发器
CREATE OR REPLACE TRIGGER TRG_WLZSJ_CODE_DESCLONG0514
  --设置触发器触发条件,after/insert
  after INSERT OR UPDATE ON MDM_WLZSJ_CODE
  FOR EACH ROW
    --定义变量
    declare
    V_desclong VARCHAR2(2000);
    V_descshort VARCHAR2(2000);
    V_count VARCHAR2(2000);
  PRAGMA AUTONOMOUS_TRANSACTION;
BEGIN
    --仅在更新时执行
    if updating then
        --调用自定义函数处理数据
        select F_DESCRIBE(desclong) into V_desclong from mdm_wlzsj_code where codeid = :new.codeid;
        select F_DESCRIBE(descshort) into V_descshort from mdm_wlzsj_code where codeid = :new.codeid;
        :new.desclong := F_DESCRIBE(:new.desclong);
        :new.descshort := F_DESCRIBE(:new.desclong);
    end if;
    --仅在插入时执行
    if inserting then
        :new.desclong := F_DESCRIBE(:new.desclong);
        :new.descshort := F_DESCRIBE(:new.desclong);
    end if;
END TRG_WLZSJ_CODE_DESCLONG0514;