倒,自己忘了加一个条件:
UPDATE user_books SET act=1 WHERE user_books.id>(SELECT min(uc.id) FROM user_books as uc WHERE uc.books_id=user_books.books_id and uc.group_id=user_books.group_id )and user_books.group_id=38可以了!
UPDATE user_books SET act=1 WHERE user_books.id>(SELECT min(uc.id) FROM user_books as uc WHERE uc.books_id=user_books.books_id and uc.group_id=user_books.group_id )and user_books.group_id=38可以了!
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