摘要：1 1、UPDATE a SET WtNo=b.NO 2 from WT_Task a 3 INNER JOIN WT_BasicInformation b ON a.WtId=b.ID; 4 2、UPDATE a SET a.WtNo=b.NO 5 FROM WT_Task a,WT_BasicInformation b 6 WHERE a.WtId=b.ID; 阅读全文