[ORA10g] level 생성하기

/********************************************************************************************
-- Title : [ORA10g] level 생성하기
-- Reference : kwoncharlie.blog.me
-- Key word : level sequence series identity connect by
********************************************************************************************/

-- Oracle

select level from dual connect by level <= 10;

 

-- PostgreSQL

    참조 : http://dbrang.tistory.com/782