请教一下的是，如何用oracle 通过DUAL表如何显示出当前年份的每个月?

Question

oracle 通过DUAL表如何显示出当前年份的每个月?

Answer 1

行： select 1 from dualunionselect 2 from dual...........列：select 1,2,3,4,5 .... from dual;