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SQL触发器写法

基本语法 create trigger tri_name on table for insert/update/deleted as SQL code 例: create trigger tri_mc(tri_mc:自定义触发器的名称) on table (table:触发的表名) for insert (触发类型:insert,插入数据触发 update,更新数据触发...

基本语法格式 create trigger tri_name on table for insert/update/deleted as SQL code 例: create trigger tri_mc(tri_mc:自定义触发器的名称) on table (table:触发的表名) for insert (触发类型:insert,插入数据触发 update,更新数据...

CREATE TRIGGER trig_stu_update ON student FOR UPDATE AS begin end; CREATE TRIGGER trig_stu_delete ON student FOR DELETE AS begin end; ------------------ 上面是更新、删除的触发器模板,将你的代码填在begin...end之间。 触发器中经常...

以sqlserver2008为例,可以写代码查看,也可以通过SQL Server Manager Studio工具的树形列表查看。 一、代码查看: 直接在SQL Server Manager Studio查询页面写语句: exec sp_helptext '触发器名' ; 二、树形列表查看: 1、用SQL Server Manage...

--此题唯一的难度是用户名 假设用户名已保存在表CurrentUser中 --给出插入操作的触发器创建 其他类似 CREATE TRRIGER MYTR1 ON A FOR INSERT AS DECLARE @UserName varchar(20) SELECT @UserName=UserName from CurrentUser INSERT INTO C (Tabl...

create trigger up_salary on employee INSTEAD OF update as if update (salary) begin declare @newSalary numeric(10,2) declare @oldSalary numeric(10,2) select @newSalary = salary from updated select @oldSalary = salary from employ...

insert delete update 三种 语法都差不多的 创建触发器的SQL语法 DELIMITER | CREATE TRIGGER ``.`` < [ BEFORE | AFTER ] > < [ INSERT | UPDATE | DELETE ] > ON FOR EACH ROW BEGIN --do something END |

ALTER trigger [dbo].[trg_allwage] on [dbo].[Factory] after insert as begin declare @allwages float select @allwages=sum(wages) from dbo.employee update dbo.Factory set allwages=@allwages where factory='A1001' end 这样改试一下。

你这个写法是oracle的。sqlserver没有for each row也没有referencing。 create trigger 月工资变动on 考勤after update begindeclare @一月份缺勤扣薪_old numeric(10,4)declare @一月份缺勤扣薪_new numeric(10,4)declare @员工编号 intif upda...

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