how start postgresql code example
Example 1: run postgres locally
$ pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start
Example 2: start postgres server
pg_ctl -D /usr/local/var/postgres stop
$ pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start
pg_ctl -D /usr/local/var/postgres stop