Re: proposal: multiple psql option -c

2015-07-27 20:47 GMT+02:00 Robert Haas <robertmhaas(at)gmail(dot)com>:

> On Mon, Jul 27, 2015 at 2:37 PM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
> wrote:
> > 2015-07-27 20:32 GMT+02:00 Robert Haas <robertmhaas(at)gmail(dot)com>:
> >>
> >> On Sat, Jul 25, 2015 at 5:27 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com
> >
> >> wrote:
> >> > It will be nice side effect, but my primary problem was a
> impossibility
> >> > to
> >> > combine VACUUM and any other statement to one simple psql call.
> >>
> >> Seems like you can do that easily enough:
> >>
> >> [rhaas pgsql]$ (echo 'SELECT 1;'; echo 'VACUUM;'; echo 'SELECT 2;') |
> psql
> >> ?column?
> >> ----------
> >> 1
> >> (1 row)
> >>
> >> VACUUM
> >> ?column?
> >> ----------
> >> 2
> >> (1 row)
> >>
> >
> > how I can do it with xargs?
>
> I don't specifically what you're trying to do, but I bet it's not that
> hard.
>

I am trying to run parallel execution

psql -At -c "select datname from pg_database" postgres | xargs -n 1 -P 3
psql -c "select current_database()"

Pavel

>
> --
> Robert Haas
> EnterpriseDB: http://www.enterprisedb.com
> The Enterprise PostgreSQL Company
>