基于多个条件删除行

Question

我需要从我的表（TABLE_X）中删除具有多个id_B的行，但是保留唯一具有id_A最大值的行。下图可能更详尽。我只想删除突出显示的行。

Answer 1

DELETE FROM TABLE_X
 WHERE id_A NOT IN (SELECT * 
                    FROM (SELECT MAX(n.id_A)
                            FROM TABLE_X n
                        GROUP BY n.id_B) x)

注意，答案来自以下线程：Delete all Duplicate Rows except for One in MySQL?