Skip to content

Instantly share code, notes, and snippets.

@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active July 22, 2024 23:19
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'
@ahoward
ahoward / tail-f.rb
Created March 7, 2012 16:44
completely k.i.s.s technique to do realtime log tailing in a live rails' app from the browser
### blogged @ http://dojo4.com/blog/easy-cheasy-realtime-log-tailing-in-a-rails-admin-view
### the su controller action
def logs
log = File.join(Rails.root, "log", "#{ Rails.env }.log")
@lines = `tail -1024 #{ log }`.split(/\n/).reverse