Re: Fetching last n records from Posgresql - Mailing list pgsql-general

From Sándor Daku
Subject Re: Fetching last n records from Posgresql
Date
Msg-id CAKyoTgb=Lx1ZkQYyjruUhDbhX2vPJMyf9OaTPp94+OHvE2S=0w@mail.gmail.com
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In response to Re: Fetching last n records from Posgresql  ("Deole, Pushkar (Pushkar)" <pdeole@avaya.com>)
List pgsql-general
On 30 March 2016 at 11:19, Deole, Pushkar (Pushkar) <pdeole@avaya.com> wrote:

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
Then:

select * from t where record_date>now()-'30 day'::interval order by record_date limit 5;

Regards,
Sándor



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