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我的问题,只是很单纯,我们可以在一列上添加多个别名吗?
不知怎的,我想补充的单柱多个别名我的查询,这将在查询中使用,我能做到吗?
e.g:
select username as id,fullname as "Full Name",(select login_date_time from login_log where login_id = ((select MAX(login_id) from login_log where username=users.username))) as "Last Login","secondAlias" from table users order by secondAlias
注:我使用笨用postgre SQL
不,这种语法是无效的,但我对什么感到好奇? – klin