Postgresql数据库查询数据,可以忽略大小写吗?

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PostgreSQL 39765 次浏览

我记得mysql是忽略大小写,大小写无关的

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pgsql语法类似mysql  ,下面总结几个pgsql工作会用到的求时间的语句

1.当前时间向前推一天\

SELECT current_timestamp - interval '1 day'

例:求出最近三天的数据
select * from 表名 where date between (SELECT current_timestamp - interval '3 day') and current_timestamp

2.当前时间向前推进一个月
SELECT current_timestamp - interval '1 month'

3.当前时间向前推进一年

SELECT current_timestamp - interval '1 year'
4.当前时间向前推一小时:
SELECT current_timestamp - interval '1 hour'
5.当前时间向前推一分钟:
SELECT current_timestamp - interval '1 min'
6.当前时间向前推60秒:
SELECT current_timestamp - interval '60 second' pgslot

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