sql server中sql语句中单引号怎么转义？
sql server有两个转义符:' 默认情况下, '是字符串的边界符, 如果在字符串中包含', 则必须使用两个', 第1个'就是转义符
另一个转义符是"
当SET QUOTED_IDENTIFIER OFF时， "是字符串边界符， 字符串中的"必须用两个"表示。
vb: """
sql server 2000: ''''
eg:
declare @SearchType nvarchar(50)
declare @SearchString nvarchar(255)
declare @SearchKey nvarchar(50)
declare @SearchSql nvarchar(2000)
set @SearchType = '2'
set @SearchKey = 'd'
set @SearchString = CASE @SearchType
when '1'then '1 = 1'
when '2'then'p.ProjectName like ''' + '%'+@searchkey + '%'+ ''''
when '3'then'p.ProjectCity like ''' + '%'+ @searchkey + '%' +''''
when '4'then'c.CateName like '''+ '%' + @searchkey + '%' + ''''
when '4'then'p.ProjectManager like ''' + '%' + @searchkey + '%' +''''
END
set @SearchSql = N'
SELECT p.*,datename(year,ProjectPostTime)+ ' +'''-''' + ' + datename(month,ProjectPostTime)+ '+ '''-''' + ' + datename(day,ProjectPostTime)' + ' as PostTime, m.EmpName,c.CateName FROM proProject As p ,mrBaseInf As m ,proCate c WHERE p.EmpID = m.EmpID and p.CateID = c.CateIDand '
+ @SearchString
print(@SearchSql)
exec(@SearchSql)
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