有以下3个table
Book(Book_no,Title,Subject,Author,Publisher,ISBN) Book(Book_no,Title,Subject,Author
Book(Book_no,Title,Subject,Author,Publisher,ISBN) Book(Book_no,Title,Subject,Author
阅读背景：
MySQL中,UPDATE SET 中类似if-else的条件怎么办???????????????????????
来源：互联网
分享到：
