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#2
multiple19O22007-11-05 12:51
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SELECT * FROM wq_books as t1 WHERE (SELECT count(*) FROM wq_books t2 WHERE t2.bookid < t1.bookid ) > = 1 AND (SELECT count(*) FROM wq_books t2 WHERE t2.bookid < t1.bookid ) < 3
这个查询语句,在sql数据库里可以,在access里就不行了,难道不支持吗?还是哪里写错了。