以下的子句只能vfp9中能运行,vfp6下不能运行?
select * from 成绩 where 成绩 in (select distinct top 5 成绩 from 成绩 order by 成绩 desc ) order by 成绩 desc上面子句只能VFP9中能运行,为什么不能在VFP6下运行?请教各位。
select distinct top 5 成绩 from 成绩 order by 成绩 desc into curs test select * from 成绩 where 成绩 in test order by 成绩 desc