sql server 常用

-- 事务
SET   TRANSACTION   ISOLATION   LEVEL   REPEATABLE   READ    
begin   transaction
   -- insert delete update select
   if   @@error <> 0    
     begin
       rollback   transaction
     end
commit   transaction

-- 变量
declare   @name   varchar ( 20 )  -- 声明   
select   @name = ' zhangsan '   -- 赋值

-- 存储过程
Create   proc  sp_demo  @param1   char ( 10 ), @param2   varchar ( 20 ), @param3   varchar ( 20 ), @param4   int  output
with  encryption  -- 加密
as
insert  table1 (column1,column2,column3)
Values ( @param1 , @param2 , @param3 )
select   @param4 = sum ( money )  from  bankMoney  where  userID = ' Zhangsan '
go

declare   @total_price   int
exec  insert_bank  ' 004 ' , ' Zhangsan ' , ' 男 ' , @total_price  output
print   ' 总余额为 ' + convert ( varchar , @total_price )
go
 
-- 视图，视图也是表，一般是多个表的交集
CREATE   VIEW  PartitionedView 
AS
SELECT   *  
FROM  MyDatabase.dbo.PartitionTable1
UNION   ALL
SELECT   *
FROM  Server2.MyDatabase.dbo.PartitionTable2
UNION   ALL
SELECT   *
FROM  Server3.MyDatabase.dbo.PartitionTable3

-- 触发器
Create   Trigger  tg_event  On  event
for   Insert  
As
begin
   insert  event_temp (id,project_id,taji_id, [ time ] ,event_type,event_miaoshu,drive_id) 
   select  id,project_id,taji_id, [ time ] ,event_type,event_miaoshu,drive_id
   from  inserted
end