Sql 获取子查询返回的值超过1时出错。此查询中的错误是什么

您可能需要一个相关的子查询：

INSERT INTO [BOOnboardingStatus]
            (BusinessID,
             SectionID,
             SectionName,
             SubSectionID,
             SubSectionName,
             status,
             createdby,
             modifieddate,
             modifiedby,
             source,
             createddate)
SELECT contentid,
       2,
       'Additional Info',
       '22',
       'Add keywords',
       (SELECT CASE
                 WHEN categoryname IS NOT NULL THEN 1
                 ELSE 0
               END
        FROM   businesscategory
        WHERE  businessid IN(SELECT contentid
                             FROM   businessmaster
                             WHERE  isclaim = 1)
               AND [primary] = 1),
       1,
       Getdate(),
       0,
       'BOD',
       Getdate()
FROM   businessmaster
WHERE  isclaim = 1 

编辑：

也许

存在

做你想做的事。它肯定会消除错误：

SELECT contentid, 2, 'Additional Info', '22', 'Add keywords',
       (SELECT CASE WHEN categoryname IS NOT NULL THEN 1
                    ELSE 0
               END
        FROM businesscategory bc
        WHERE bc.businessid = bm.contentid AND
              bc.[primary] = 1
       ),
       1, Getdate(), 0, 'BOD', Getdate()
FROM businessmaster bm
WHERE isclaim = 1 ;

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您只有一个子查询，错误消息非常漂亮clear@Pரதீப், 几乎正确，实际上有两个子查询…@ jARLH-罚款：/<代码> < /COD>操作符使我不考虑……我不确定，但是当存在（…）时不能使用<代码>情况吗？然后在<代码>状态< /代码>列中1个0个结束< /代码>？然后在“businesscategory”中的单个“businessid”上有多个“primary”标志。

SELECT contentid, 2, 'Additional Info', '22', 'Add keywords',
       (CASE WHEN EXISTS (SELECT 1
                          FROM businesscategory bc
                          WHERE bc.businessid = bm.contentid AND
                          bc.[primary] = 1
                         )
             THEN 1 ELSE 0
        END),
       1, Getdate(), 0, 'BOD', Getdate()
FROM businessmaster bm
WHERE isclaim = 1 ;