declare @desc varchar(50)
begin tran
begin
print '提交了！'
distinct 删除重复行
when xxx then xx
while xxx
======================================================
print @desc
xxxxxx
end
update bank set balance=balance + 1000 where cid='0002'

set @sum=@sum+@@error
if @sum<>0

begin catch
作者 xhccom end catch
=========================================
select @id=tclassId,@name=tclassname,@desc=tclassdesc from inserted
=======================================================
select * from deleted
convert(varchar(20),tscore.tenglish) 类型转换
begin
declare @halfCount int= ceiling(@count/2.0) 向上
set @sum=@sum+@@error
begin
--提交事务
declare @name varchar(50)
事务

update bank set balance=balance + 900 where cid='0002'

begin try
on TblClass instead of delete
删除时触发器
update bank set balance=balance-1000 where cid='0001'

end try
增加时触发器

update bank set balance=balance-900 where cid='0001'
set @sum=@sum+@@error

rollback

end
cast(xx as varchar(10)) 类型转换
on TblClass after insert
begin
sql不常用函数总结以及事务，增加，删除触发器
end
print '回滚！'
begin


end
declare @x 申明一个变量
else
commit
===================================================
end

print @id
declare @sum int = 0
end
print @name
情况
when xxxx then xxxxx
begin tran
create trigger tri_TblClass_insert_after
=========================================
set @sum=@sum+@@error


declare @sum int = 0
========================================
insert into TblClassBak
case
else
as

=====================================================
commit tran


create trigger tri_TblClass_delete_after
declare @id int
rollback

===================================================
as