CREATE OR REPLACE TRIGGER ywti_orderM_Update
BEFORE UPDATE
OF overYn
ON ywt_orderM
FOR EACH ROW
BEGIN
END;这段代码中,BEFORE UPDATE OF overYn,OF 后面跟字段名 是什么意思?
BEFORE UPDATE
OF overYn
ON ywt_orderM
FOR EACH ROW
BEGIN
END;这段代码中,BEFORE UPDATE OF overYn,OF 后面跟字段名 是什么意思?
OF overYn
ON ywt_orderM
在更新表OVERYN上YWT_ORDERM字段之前,执行begin end 之间的内容
OF overYn
ON ywt_orderM仅当update ywt_orderm表的overyn列之前触发触发器