We do this

nohup psql -U (username) -W -f (sqlquery script) (database)  &&

on our linux boxes all the time to run a long query or sequence of them.
If its a scheduled job it just goes into cron and you don't need the
"nohup" or trailing "&&". Let me know if you'd like me to break all that
apart for you.

Tim Clarke

On 07/05/15 02:15, Melvin Davidson wrote:
> Although not a PostgreSQL utility, in Linux, you can use screen or
> tmux to establish a connection and then disconnect.
>
> On Wed, May 6, 2015 at 6:48 PM, David G. Johnston
> <[email protected] <mailto:[email protected]>> wrote:
>
>     On Wed, May 6, 2015 at 3:37 PM, Yves Dorfsman <[email protected]
>     <mailto:[email protected]>>wrote:
>
>
>         On 9.3, is there any way to start a query, detach from the
>         server and have the
>         query keep going (long query that updates tables, but nothing
>         is returned)?
>
>
>     ​ No.  Sessions require an external client to maintain its connection.
>
>     David J.
>     ​
>      
>
>
>
>
> -- 
> *Melvin Davidson*
> I reserve the right to fantasize.  Whether or not you
> wish to share my fantasy is entirely up to you.

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