摘要： SELECT JBGS.XMID, SUM(JBGS.JBGS * JBYXXS.YXXS) / (SELECT SUM(B.GS) FROM T_XMCBHZ B WHERE B.XMID=' ” + XMID + ” ')FROM (SELECT MIN(B.XMID) XMID, B.RYJB... 阅读全文