SQL修改的问题! UPDATE A SET AID=B.BIDFROM A JOIN B ON A.ANAME=B.BNAME 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 update a set a.aid=b.bid from a,bwhere a.aname=b.bname and a.aid is null UPDATE TA SET TA.AID=TB.BID FROM TB WHERE TA.ANAME=TB.BNAME AND TA.AID IS NULL update a set a.aid=b.bid from a,b where a.aname=b.bname and a.aid is null UPDATE A SET AID=B.BIDFROM tbA AS A JOIN tbB AS BON A.AName=B.BName AND A.AID IS NULL update aset a.aid=b.bidfrom a join b on a.aname=b.bnamewhere a.aid is null update Aset A.AID = isnull(A.AID,case when A.ANANME = B.BNAME then B.BID else null end)from A,B SQL数据库密钥问题 MSSQL2000备份问题 拆分字符串,插入表。 恢复数据库过程中提示磁盘空间不足,而空间足够了。Why? 请大家推荐一本SQL Server 2000与Analysis Services比较经典的书,小弟万分感谢!! 请问字符串转换成日期的问题 这些语句可以合并吗? sql server 7.0初学者 向编写过仓库管理系统的程序员学习 SQL触发器问题 sql简单查询问题。。 请教一个在项目中统计表记录的问题!
from a,b
where a.aname=b.bname and a.aid is null
AID=B.BID
FROM tbA AS A
JOIN tbB AS B
ON A.AName=B.BName
AND A.AID IS NULL
set a.aid=b.bid
from a join b on a.aname=b.bname
where a.aid is null
set A.AID = isnull(A.AID,case when A.ANANME = B.BNAME then B.BID else null end)
from A,B