CREATETRIGGERdbo.trGroups ONgroups AFTERINSERT,UPDATE,DELETE AS --This trigger submits a cached rates delete job for modified groups. --It also updates the groups' last modified columns for modified groups. --It
AFTERINSERT,UPDATE--定义都个触发,可以用逗号隔开 AS BEGIN SET NOCOUNT ON --可有可无 DECLARE @.. ;--声明变量 select insert ... --相应的select语句,insert语句(update语句、delete语句) SET NOCOUNT OFF--可有可无 END GO 4 INSTEAD OF类的语法 CREATE TRIGGERtf_name ONtable INSTEAD OFINSERT--在...
CREATE TRIGGER dbo.trGroups ON groups AFTER INSERT, UPDATE, DELETE AS -- This trigger submits a cached rates delete job for modified groups. -- It also updates the groups' last modified columns for modified groups. -- It also updates the groups' state (if currently unspecified) based on ...
create table trigger_a_order_2 like trigger_a_order_1; 1. insert 触发器 DELIMITER $ create trigger trigger_a_order_1_trigger after insert on trigger_a_order_1 for each row begin INSERT INTO trigger_a_order_2(order_id,order_sn,user_nick,user_mobile,address,status,payment) VALUES(new.or...
4.激活触发器的数据修改语句。 5.执行触发操作的编程语句。 CREATE TRIGGER语句基本语法格式如下 ...
使用CREATE TRIGGER语句创建触发器。触发器可以在数据操作之前(BEFORE)或之后(AFTER)执行,可以针对INSERT、UPDATE或DELETE操作。例如,假设我们有一个名为users的表格,其结构如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATETABLEusers(idINTAUTO_INCREMENTPRIMARYKEY,usernameVARCHAR(50)NOTNULL,emailVARCHAR...
CREATE TRIGGER trgAfterOrderInsert ON Orders AFTER INSERT AS BEGIN -- 假设Orders表有OrderId, ProductId, Quantity等列 -- Inventory表有ProductId, Quantity等列 -- 声明变量以存储影响的行数 DECLARE @RowsAffected INT; -- 尝试更新库存 UPDATE Inventory SET Quantity = Quantity - I.Quantity FROM Invento...
CREATE TRIGGER 触发器名称 {BEFORE | AFTER} {INSERT | UPDATE | DELETE} ON 表名 FOR EACH ROW 触发器执行的语句块; 举个例子🌰 假设你想在向test_trigger表插入数据后,自动在test_trigger_log表中插入一条日志信息。你可以这样创建触发器: DELIMITER // CREATE TRIGGER after_insert AFTER INSERT ON test...
CREATE TRIGGER trigger_name {BEFORE | AFTER} {INSERT | UPDATE | DELETE} ON table_name [FOR EACH ROW] BEGIN – 触发器执行的SQL语句 END; 其中,trigger_name是触发器的名称,table_name是触发器所依附的表的名称。BEFORE和AFTER指定触发器执行的时机,INSERT、UPDATE和DELETE指定触发器所针对的操作类型。 [...
更新操作(Update):Inserted表有数据(新数据),Deleted表有数据(旧数据) 笔者用到的案例: create TRIGGER [risk].[Entry_Head_port_Exchange_Trigger] ON [RiskH800].[risk].[ENTRY_HEAD] AFTER INSERT,UPDATE AS DECLARE @COUNT INT DECLARE @MANUAL_NO_COUNT INT ...