图所示现需要批量更新table2表内字段Pwd更新userName对IP地址username与Ip对应关系table1所示
update
table2
set
pwd=table1.ip
from
table1
inner
join
table2
on
table1.username=table2.username
UPDATE
TABLE2 A
SET
A.PWD =(
SELECT
B.IP
FROM
TABLE1 B
WHERE
B.userName =A.userName)