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Oracle兩表聯(lián)合查詢group

夏志豪2年前13瀏覽0評論

Oracle兩表聯(lián)合查詢group?

select * from (SELECT b.CLIENTNO,b.CNAME,SUM(a.AMOUNT) TAMOUNT FROM PURCHASE a, CLIENT b where a.CLIENTNO=b.CLIENTNO GROUP BY a.CLIENTNO order by TAMOUNT) aa where rowNum=1