Re: Fetching last n records from Posgresql
От | Sándor Daku |
---|---|
Тема | Re: Fetching last n records from Posgresql |
Дата | |
Msg-id | CAKyoTgb=Lx1ZkQYyjruUhDbhX2vPJMyf9OaTPp94+OHvE2S=0w@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Fetching last n records from Posgresql ("Deole, Pushkar (Pushkar)" <pdeole@avaya.com>) |
Список | pgsql-general |
select * from t order by record_date desc limit 5;
this will return the recent 5 records.. what I want is the oldest 5 records (in last 30 days)
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of John R Pierce
Sent: Wednesday, March 30, 2016 12:38 PM
To: pgsql-general@postgresql.org
Subject: Re: [GENERAL] Fetching last n records from Posgresql
On 3/29/2016 11:40 PM, Deole, Pushkar (Pushkar) wrote:
WITH t AS (
SELECT * FROM mytable ORDER BY record_date ASC LIMIT 5
)
SELECT * FROM t ORDER BY record_date DESC;
why do it twice when you can just do....
select * from t order by record_date desc limit 5;
--john r pierce, recycling bits in santa cruz
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