set @sqlStr='Title like ''%test%'' or Key like ''%test%'''
set @sqlStr = 'select * from news where '+@sqlStr
--print @sqlStr
exec(@sqlStr)
set @sqlStr = 'select * from news where '+@sqlStr
--print @sqlStr
exec(@sqlStr)
set @sqlStr = 'select * from news where '+@sqlStr
--print @sqlStr
exec(@sqlStr)