摘要: select case fmt when '15 min' then (date_trunc('hour', val) + date_part('minute', val)::int / 15 * interval '15 min') when '30 min' then (date_trunc(' 阅读全文
posted @ 2017-02-04 11:32 haitlee 阅读(3384) 评论(0) 推荐(0)