摘要:select a.bookname,b.categoryname from bk_bookname a,bk_category bwhere a.categoryid=b.id(一般用于mysql中,相當于inner join[內連接]) SELECT bk_bookname.bookname, bk_category.categorynameFROM bk_bookname inner JOIN...
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posted @ 2008-10-24 16:57
感動常在
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