Re: proposal: multiple psql option -c

On Mon, Jul 27, 2015 at 2:53 PM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
> 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()"

Put this in a shell script called run-psql:

#!/bin/bash

test $# = 0 && exit
for f in "${@:1:$(($#-1))}"; do
echo "$f" \;
done | psql "${@:$#}"

Then:

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

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