SQLServer 一些有用的语句

SET STATISTICS TIME ON

记录查询的相关数据

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生成随机Guid

SELECT NewID()

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按照某一列排序并生成序号

select
    Row_Number() OVER (ORDER BY Name) [Index]
    ,Name,ID
    ,NewID() RandomCode
from Users

Over后面的括号中就是排序的语句 可以写 Order By XXX 或 Order By OOO Desc

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--判断存储过程是否存在
IF EXISTS (SELECT * FROM SYSOBJECTS WHERE ID = OBJECT_ID(N'[P_EF_ExpertInvalidStatistic]') AND
        OBJECTPROPERTY(ID, N'ISPROCEDURE') = 1)
    DROP PROCEDURE P_EF_EXPERTINVALIDSTATISTIC
GO

--判断表是否存在
IF EXISTS (SELECT * FROM SYSOBJECTS WHERE ID = OBJECT_ID(N'[tb_Emp_InvalidExpert]') AND
        OBJECTPROPERTY(id, N'IsUserTable') = 1)
    DROP TABLE tb_Emp_InvalidExpert
GO