如何从表中删除重复的数据 [英] How to remove duplicate Data from a table

问题描述

如何从表CATS中删除重复数据



Cat_ID标题

2630一个诗集

2641一群诗人

10390一群诗人

9481一句诗句

2621一大串诗歌



在此表CATS中，Cat_ID是具有自动识别功能的主键，现在我想从表中删除重复数据。



先谢谢。

Bigyan

How to Remove Duplicate Data From a table CATS

Cat_ID Title
2630 A BOUQUET OF POEMS
2641 A BOUQUET OF POEMS
10390 A BOUQUET OF POEMS
9481 A BOUQUET OF POEMS
2621 A BOUQUET OF POEMS

In this table CATS, Cat_ID is primary key with Auto Identity, And now I want to delete duplicate Data from the table.

Thanks in Advance.
Bigyan

推荐答案

试试这个：

Try this:

DELETE FROM Cats
WHERE Cat_ID IN (
    SELECT Cat_ID
    FROM (
        SELECT Cat_ID, Title, ROW_NUMBER() OVER(PARTITION BY Title ORDER BY Cat_ID) AS RowNo
        FROM Cats
    ) AS T
    WHERE T.RowNo>1)

DELETE FROM Cats WHERE Title = N'A BOUQUET OF POEMS'

是吗？



如需更多参考资料 -

从SQL Server中的表中删除重复行 [ ^ ]

如何从SQL Server中的表中删除重复的行 [ ^ ]

从SQL Server中删除表中的重复项 [ ^ ]

Google [ ^ ]



-KR

DELETE FROM Cats WHERE Title = N'A BOUQUET OF POEMS'
Is it ?

For more references-
Remove Duplicate Rows from a Table in SQL Server[^]
How to remove duplicate rows from a table in SQL Server[^]
Removing Duplicates from a Table in SQL Server[^]
Google[^]

-KR

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