Question

我有以下SQL查询用于搜索目的。

有一个@st变量，它被分配了一个SQL查询，最后我将执行查询。问题是为@st变量分配了一个字符串（这是查询），在字符串中有LIKE表达式，例如：

address like '%edmon%'

所以它变成了：

set @st='select * from infoone where address like '%edmon%''

它导致错误：

edmon附近的语法错误

完整查询如下，

declare @v int;
declare @st varchar(1000);

set @st = 'select PLACEID, LEFT(CONVERT(NVARCHAR(1000), description), 500) as
des1, LOCATIONCITY, ADDRESS, DateT, RENT from infoone where '; 

Select @v = count(address) 
from infoone  
where ((address like '%main%') OR (address like '%main street%') 
       OR (address like '%main street edmonton%'));

if @v>0 
begin 
    set @st = @st + '(address like '%main%') OR 
                     (address like '%main street%') OR 
                     (address like '%main street edmonton%')' + 
                    'and ('; 
end 
else begin
    execute(@st)

请让我知道我做错了什么以及如何解决它

由于

Answer 1

要在字符串上获取单引号，请使用''：

set @st = 'select * from infoone where address like ''%edmon%'''

Answer 2

Gordon Linoff已经向您解释了您的单引号'出错的地方，但您的陈述还有其他一些问题。做你想做的更好的方法就是这样......

declare @st nvarchar(MAX);

set @st=N' select PLACEID
                ,CONVERT(NVARCHAR(500),[description]) as des1
                ,LOCATIONCITY
                ,[ADDRESS]
                ,DateT
                ,RENT 
         from infoone  where 1 = 1 '; 

IF EXISTS (Select * from infoone  
                where(([ADDRESS] like '%main%') 
                   OR ([ADDRESS] like '%main street%') 
                   OR ([ADDRESS] like '%main street edmonton%')))
 begin 
   set @st = @st+ N' AND (
                       ([ADDRESS] like ''%main%'') 
                       OR
                       ([ADDRESS] like ''%main street%'') 
                       OR
                       ([ADDRESS] like ''%main street edmonton%'')
                      )'; 
 end 
else 
  begin
    set @st = @st+ N' AND  (Some Other Condition) )'
  end

EXECUTE sp_executesql @st

在sql中的字符串内单引号

2 个答案: