标签:SQL Server

利用sql自定义函数,生成指定长度随机字符串 USE [TEST_DB] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO create view [dbo].[vw_rand] as select Rand() as re set ANSI_NULLS ON set QUOTED_IDENTIFIER ON GO ALTER funct...

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1)LEFT函数 函数说明 LEFT (<character_expression>, <integer_expression>) character_expression:源字符串 integer_expression:截取字符数(左侧开始) 例 select LEFT('SQL_SERVER',4); 结果:SQL_ 2)R...

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