Re: Selecting the last 2 rows of a table

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От Majid Azimi
Тема Re: Selecting the last 2 rows of a table
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Msg-id 1289296122.3893.1.camel@localhost.localdomain
обсуждение исходный текст
Ответ на Selecting the last 2 rows of a table  (Machiel Richards <machielr@rdc.co.za>)
Список pgsql-novice
On Tue, 2010-11-09 at 11:34 +0200, Machiel Richards wrote:
> Good day all
>
>      I am trying to find out how I can select the last 2 or (n
> amount ) of rows from a specific table.
>
>       We have a table which has been growing rediculously the last
> view days (I must say after a code go-live).
>
>        I am trying to find out what data is being written to the table
> that is causing this, however due to the size of the table at the
> moment, it can cause problems so I am just interested in the last
> number of records.
>
>
>       I would appreciate any assistance in this.
>
>
> Regards
> Machiel

Or if you don't want to use "order by" you can use this but it is
inefficient:

SELECT * FROM <Table name> OFFSET (SELECT count(*) - 2 FROM <table
name>);




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