Sql server 如何使用sql查找表中的重复行

我已尝试此查询以获取重复记录。但我遇到此错误

select * from Codes
where id = 35712 and isactive = 1
group by line_num
having count(*) > 1

Msg 8120, Level 16, State 1, Line 1
Column 'Codes.code_id' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

我得到了这个错误

select * from Codes
where id = 35712 and isactive = 1
group by line_num
having count(*) > 1

Msg 8120, Level 16, State 1, Line 1
Column 'Codes.code_id' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

这里，code_id是该表的主键

有谁能帮我找到这个表中有重复项的代码id吗

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感谢

它在第_num行列中搜索重复的值，其中代码_id是代码表的主键。我不知道确切的表定义，所以这有点猜测

select c.code_id, c.line_num, t.qt from codes c
join (
    select line_num, count(*) as qt
    from codes
    where id = 35712 and isActive = 1
    group by line_num
    having count(*) > 1
) as t on t.line_num = c.line_num

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第一列返回所有代码ID，这些代码ID在第_num行（第二列）qt-quantity中有重复的值。

在SQL Server 2005及更高版本中，您可以使用聚合窗口函数：

;WITH counted AS (
  SELECT
    *,
    Cnt = COUNT(*) OVER (PARTITION BY line_num)
  FROM Codes
  WHERE id = 35712
    AND isactive = 1
)
SELECT *
FROM counted
WHERE Cnt > 1

参考资料：

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如果我使用主键进行分组，我不会得到任何记录。如果code\u id是主键，那么pair:code\u id，line\u num并不总是唯一的？如果id是主键，则不能有多个id为35712的行。在这里，id可以是多个记录，但ba\u code\u id应该是主键。您如何向我们展示您的表定义？就像现在一样，你只是随机地给我们提供关于专栏的额外信息。。。