select AUTHOR, PRICE from BOOKS where BNAME = '水浒'select CNO, count(*) from BORROW group by CNO having count(*) > 5 select CNO, BNO from BORROW where RDATE < NOWselect BNO, BNAME, AUTHOR from BOOKS where BNAME like '%网络%'select BNAME, AUTHOR from BOOKS where PRICE = MAX(PRICE) 权作参考
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货