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 also updates the groups' state (if currently unspecified) based on --the (first...
--update触发器 create trigger tri_update on student--将要进行更改的表名 for update--给表修改一条数据的时候触发 as if update(student_id) begin raiserror('学号不能修改!',16,8) rollback tran end go --delete触发器 create trigger tri_delete on student--将要进行更改的表名 for delete--给表...
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 ...
1.插入操作(Insert) Inserted表有数据,Deleted表无数据 2.删除操作(Delete) Inserted表无数据,Deleted表有数据 3.更新操作(Update) Inserted表有数据(新数据),Deleted表有数据(旧数据) Create Trigger tr_PCard On P_Card for Insert,Update,Delete if exists (select * from inserted) AND exists (select * ...
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...
SET @IsDelete = 0 create trigger Update_Del on Table for update,delete as if not exists(select 1 from inserted) begin /*inserted表无记录，是删除*/ end else begin /*是更新*/ end go 关键在于Inserted表 触发器语句中使用了两种特殊的表：deleted 表和 inserted 表。Deleted 表用于...
SET @IsDelete = 0 create trigger Update_Del on Table for update,delete as if not exists(select 1 from inserted)begin /*inserted表无记录，是删除*/ end else begin /*是更新*/ end go 关键在于Inserted表 触发器语句中使用了两种特殊的表：deleted 表和 inserted 表。Deleted 表用于存储 ...
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。
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:触发器的名称。 BEFORE/AFTER:指定触发器是在触发事件之前还是之后执行。 INSERT/UPDATE/DELETE:指定触发器是在插入、更新还是删除数据时触发。 tab...
简述SQL SERVER触发器内INSERT,UPDATE,DELETE的三种状态2013-12-09一个触发器内三种INSERT,UPDATE,DELETE状态 CREATE TRIGGER tr_T_A ON T_A for INSERT,UPDATE,DELETE 如IF exists (select * from inserted) and not exists (select * from deleted) 则为 INSERT ...