Skip to content

Instantly share code, notes, and snippets.

View jfrost's full-sized avatar

Jeff Frost jfrost

  • PostgreSQL Experts, Inc.
View GitHub Profile
@ololobus
ololobus / pgbench-query.sql
Last active February 5, 2024 02:52
PostgreSQL pgbench schema
\set aid random(1, 100000 * :scale)
\set bid random(1, 1 * :scale)
\set tid random(1, 10 * :scale)
\set delta random(-5000, 5000)
BEGIN;
UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid;
SELECT abalance FROM pgbench_accounts WHERE aid = :aid;
UPDATE pgbench_tellers SET tbalance = tbalance + :delta WHERE tid = :tid;
UPDATE pgbench_branches SET bbalance = bbalance + :delta WHERE bid = :bid;
INSERT INTO pgbench_history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, CURRENT_TIMESTAMP);
--
-- GEOIP IN POSTGRESQL
--
-- We use two approaches. First using PostgreSQL inet and cidr types and indexing (PostgreSQL 9.4 and later),
-- and then using ip4r (https://github.com/RhodiumToad/ip4r).
-- The performance of ip4r indexes is significantly better than PostgreSQL's own index.
-- An operation that took 42s using ip4r took 47 minutes using PostgreSQL's cidr index.
--
@statique
statique / serialized_conversion.sql
Created November 2, 2012 20:42
PostgreSQL Convert Rails serialized YAML to JSON query
-- replace table_name with the name of your database table, e.g. users
-- replace data with the serialized field in the table, e.g. nicknames
-- output generates serialized data that decrypts to a Ruby array.
-- data with quotes, hyphens, or spaces will have issues with this query.
-- preview the YAML to JSON to confirm the conversion is working.
SELECT data, REPLACE(REPLACE(REPLACE(REPLACE(REGEXP_REPLACE(REPLACE(REPLACE(REPLACE(data,
' ', ''),
'...', ''),
'---', '["'),
@brandonb927
brandonb927 / osx-for-hackers.sh
Last active May 14, 2024 18:00
OSX for Hackers: Yosemite/El Capitan Edition. This script tries not to be *too* opinionated and any major changes to your system require a prompt. You've been warned.
#!/bin/sh
###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###
# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx
@jgeurts
jgeurts / install-graphite-ubuntu-12.04.sh
Created July 14, 2012 16:36 — forked from tkoeppen/install-graphite-ubuntu-10.04.sh
Install Graphite 0.9.10 on Ubuntu 12.04
####################################
# BASIC REQUIREMENTS
# http://graphite.wikidot.com/installation
# http://geek.michaelgrace.org/2011/09/how-to-install-graphite-on-ubuntu/
# Last tested & updated 10/13/2011
####################################
cd
sudo apt-get update
sudo apt-get upgrade