Question

我有一个sql查询，执行时会出错

＆＃34; 无法比较或排序text，ntext和image数据类型，除非使用IS NULL或LIKE运算符。＆＃34;

查询

SELECT Count(*)                                AS present, 
       (SELECT Count(counted) 
        FROM   (SELECT attdate AS counted 
                FROM   gtab85 
                WHERE  attdate >= '01/10/2014' 
                       AND attdate <= '11/10/2014' 
                GROUP  BY attdate) AS derived) AS working, 
       gtab86.staffname 
FROM   gtab85 AS A 
       INNER JOIN gtab86 
               ON gtab86.staffid = A.userid 
WHERE  attdate >= '01/10/2014' 
       AND attdate <= '11/10/2014' 
GROUP  BY userid, 
          staffname

当我执行以下部分时

SELECT Count(*)                                AS present, 
       (SELECT Count(counted) 
        FROM   (SELECT attdate AS counted 
                FROM   gtab85 
                WHERE  attdate >= '01/10/2014' 
                       AND attdate <= '11/10/2014' 
                GROUP  BY attdate) AS derived) AS working

我以未分类的方式得到结果。请帮我解决这个问题。

Answer 1

尝试将文本转换为varchar：

select count(*) as present,
       (select count(counted)  
        from (select attdate as counted 
              from  gtab85 
              where attdate >='01/10/2014' and attdate <='11/10/2014' group by attdate
             ) as derived
       ) as working, 
       convert(varchar(255),gtab86.staffname )
from gtab85 as A 
inner join gtab86 
on gtab86.staffid=A.userid 
where attdate >='01/10/2014' and attdate <='11/10/2014'  
group by userid,convert(varchar(255),gtab86.staffname )

具有多选的排序错误的SQL查询

1 个答案: