insert into vam_cart(memberId, bookId, bookCount) values(#{memberId}, #{bookId}, #{bookCount}) delete from vam_cart where cartId = #{cartId} update vam_cart set bookCount=#{bookCount} where cartId = #{cartId} select a.cartId, a.memberId, a.bookId, a.bookCount, b.bookName, b.bookPrice, b.bookDiscount from vam_cart a left outer join vam_book b on a.bookId = b.bookId where memberId = #{memberId} select * from vam_cart where memberId = #{memberId} and bookId = #{bookId} delete from vam_cart where memberId = #{memberId} and bookId = #{bookId}