a.authorId = #{authorId} a.cateCode like concat ('%', #{cateCode}, '%') bookName like concat ('%', #{keyword}, '%') select bookId, bookName, b.authorName, a.authorId, c.cateName, a.cateCode, publisher, publeYear, bookPrice, bookDiscount from vam_book a left outer join vam_author b on a.authorId = b.authorId left outer join vam_bcate c on a.cateCode = c.cateCode order by bookId desc limit #{skip}, #{amount} select count(*) from vam_book a select authorid from vam_author where authorname like concat ('%', #{keyword}, '%') 100000 and cateCode < 200000 ]]> 200000 and cateCode < 300000 ]]> select distinct cateCode from vam_book where authorId = #{authorId} bookName like concat ('%', #{keyword}, '%') select DISTINCT count(*) cateCount, a.cateCode,b.cateName from vam_book a left join vam_bcate b on a.cateCode = b.cateCode where authorId = #{authorId} and a.cateCode = #{cateCode} bookName like concat ('%', #{keyword}, '%') and a.cateCode = #{cateCode} select a.BOOKID, a.BOOKNAME, a.AUTHORID, b.AUTHORNAME, a.PUBLEYEAR, a.PUBLISHER, a.CATECODE, c.CATENAME, a.BOOKPRICE, a.BOOKSTOCK, a.BOOKDISCOUNT, a.BOOKINTRO, a.BOOKCONTENTS from vam_book a left outer join vam_author b on a.authorId = b.authorId left outer join vam_bcate c on a.catecode = c.catecode where bookid = ${bookId} select bookId, bookName from vam_book where bookId = #{bookId} select bookId, bookName, ratingAvg, (select cateName from vam_bcate where vam_book.cateCode = vam_bcate.cateCode) as cateName from vam_book order by ratingAvg desc limit 8