vfp中exists用法?SELECT * from jk1 a where exists(select * from jk2 b where left(b.dm,6)=a.dm)在SQL中可以运用,但在vfp中出错“关联字段时出错”[解决办法]
-- 改为:Select a.* From jk1 a Inner Join jk2 b On Left(b.dm,6)=a.dm)