2008-04-17 10:17:39 / Oracle开发
select a.name,b.date,c.departmentfrom a,b,cwhere a.id=b.idand b.id=c.idand a.id=c.id;然后对这个语句的结果求count,但是我的语句不正确,请DX指点select count(select a.name,b.date,c.department from a,b,c where a.id=b.id and b.id=c.id) from dual;[ 本帖最后由 bigbombgj 于 2008-4-17 10:21 编辑 ]
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