T-SQL字符转义

今天在用SQL Server查询以prm_开头的表名时发现问题，查看一下是下划线没被转义，特此总结一下T-SQL字符转义

创建临时表，插入示例数据

1 CREATE TABLE #characters(ch VARCHAR(200))
2 INSERT #characters VALUES('[入职时间]:2012-9-12')
3 INSERT #characters VALUES('prm_batch')
4 INSERT #characters VALUES('select PromiseTime as ''ptime''')
5 INSERT #characters VALUES('4 % 2= 0')
6 INSERT #characters VALUES('4 / 2= 2')

 转义查询

1 --  对于[]，用/和ESCAPE转义
2 SELECT * FROM #characters WHERE ch LIKE '/[入职时间/]%' ESCAPE '/'
3 --  对于_和%， 用[]括起来转义
4 SELECT * FROM #characters WHERE ch LIKE 'prm[_]%'
5 SELECT * FROM #characters WHERE ch LIKE '4 [%]%'
6 -- 对于单引号， 前加单引号转义
7 SELECT * FROM #characters WHERE ch LIKE 'select PromiseTime as ''%'
8 --  对于/，不需要转义
9 SELECT * FROM #characters WHERE ch LIKE '4 /%'

 

转载于:https://www.cnblogs.com/qunyang/archive/2012/11/06/2756930.html