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
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 -- the (first) state extracted from ...
DELIMITER $$ -- 创建 AFTER INSERT 触发器,在订单插入后更新库存 CREATE TRIGGER 更新库存 AFTER INSERT ON 订单 FOR EACH ROW BEGIN UPDATE 库存 SET 库存数量 = 库存数量 - NEW.购买数量 WHERE 商品ID = NEW.商品ID; END $$ DELIMITER ; 3. 删除触发器 查看触发器是否存在 -- 查看当前数据库中的触发...
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...
插入触发器(INSERT trigger):在数据插入表中之前或之后触发。 更新触发器(UPDATE trigger):在数据更新表中之前或之后触发。 删除触发器(DELETE trigger):在数据删除表中之前或之后触发。 按触发粒度分类: 行级触发器(FOR EACH ROW trigger):针对每一行数据的变更操作触发。
AFTER 触发器语法: 1 CREATE [ OR ALTER ] TRIGGER [ schema_name . ]trigger_name 2 ON { table } 3 [ WITH <dml_trigger_option> [ ,...n ] ] 4 { FOR | AFTER } 5 { [ INSERT ] [ , ] [ UPDATE ] [ , ] [ DELETE ] } ...
1、 使用CREATE TRIGGER语句定义触发器,ALTER TRIGGER语句修改触发器,DROP TRIGGER语句删除触发器。 2、 触发器分AFTER/FOR和INSTEAD OF两种类型:AFTER/FOR类型的触发器是在相应的触发语句(insert、delete、update)执行完后被触发的。如果触发语句对应的表上有完整性约束,这些完整性约束必须不违背时,相应的触发语句才能...
删除操作(Delete):Inserted表无数据,Deleted表有数据 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 ...
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。 [...
删除操作(Delete):Inserted表无数据,Deleted表有数据 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 ...