根据表中的一个字段查找另外一个表的ID更新到这个表的字段上

update CT_KMY_ZhKmAndJxxtKmRelation t1 set (CFJxxtKmID) =

(

select t2.fid from T_BD_AccountView t2 where t2.fnumber=t1.CFJxxtKmNumber and t2.fcompanyid='MwAAAAAAAATM567U'

)

select fid,fnumber from T_BD_AccountView t2 where t2.fcompanyid='MwAAAAAAAATM567U' and fnumber = '1601.04'

select CFJxxtKmID,CFJxxtKmNumber from CT_KMY_ZhKmAndJxxtKmRelation where CFJxxtKmID is null