(oracle数据库方面)谁能帮我解析下replace和substr,这串代码不太明白,谢谢了
selectreplace('2014-12'' - ''00')|| 00'FlomDual;,1,10)从单次开始,果实开始1000'm')表示将n替换为s中的n至m
oracle中取出第n行后的m条数据
selectemployes_idfromempouteeswherownum <= norderbyemployees_id删除本单元中的订单。从ShowerWhereMployees_idnotin(selectMployee d)whhenerid