aks

ActiveRecord::Migration API Notes

The ActiveRecord::Migration class is used to manage Rails migration scripts. When writing these scripts, there are many class methods that can be used to make schema changes, which are described below in several sections.

Migration Methods

Create Methods	Arguments	Notes	Rev
create_join_table	table1, table2, options	Creates a join table	Y
create_table	name, options	Creates a table	Y

alanbsmith

CFP Outline

an outline for talks to be submitted to PaperCall.io

OVERVIEW

This document is a collection of resources and helpful information for writing a good CFP. Many of the notes and tips are direct quotes from the resources listed below. They are mostly notes I took as I read. The outline itself is formatted for PaperCall.io, and the italicized notes are from their site as well.

GENERAL TIPS

rgreenjr

-- 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%'