Oracle 高级使用整理Oracle 高级使用整理:
Oracle 高级使用整理:1、with As的使用with tt as(select 2080 t_vendor_id from dualunion allselect 80 t_vendor_id from dualunion allselect 81 t_vendor_id from dual)select * from Po_Vendors pv,ttwherepv.VENDOR_ID = tt.t_vendor_id;...