删除重复的SQL记录

Question

删除表中具有重复名称的记录的最简单方法是什么？我遇到的答案非常令人困惑。

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Removing duplicate records from table

Answer 1

我明白了！简单而且效果很好。

delete 
   t1 
from 
   tTable t1, tTable t2 
where 
   t1.locationName = t2.locationName and  
   t1.id > t2.id 

http://www.cryer.co.uk/brian/sql/sql_delete_duplicates.htm

Answer 2

SQL Server 2005：

with FirstKey
AS
(
    SELECT MIN(ID), Name, COUNT(*) AS Cnt
      FROM YourTable
     GROUP BY Name
     HAVING COUNT(*) > 1
)
DELETE YourTable
  FROM YourTable YT
  JOIN FirstKey FK ON FK.Name = YT.Name AND FK.ID != YT.ID