For the life of me I can't find a simple example of just running something like
"SELECT * FROM MyTable"
in Ruby. Everything I'm finding assumes an ORM or Rails. For now, I don't want ORM; I don't want Rails. I'm looking for something standalone that uses the pg gem and executes a simple query.
From the pg gem documentation (http://rubydoc.info/gems/pg/0.10.0/frames)
require 'pg'
conn = PGconn.open(:dbname => 'test')
res = conn.exec('SELECT 1 AS a, 2 AS b, NULL AS c')
res.getvalue(0,0) # '1'
res[0]['b'] # '2'
res[0]['c'] # nil
My next question would be authentication with a DB that requires a password.
Looks like you can send a connection string like this:
PGconn.connect( "dbname=test password=mypass")
or use the constuctor with parameters:
PGconn.new(host, port, options, tty, dbname, login, password)
or use a hash like :password => '...'
see here for all available options.