DmitryTsepelev

ActiveRecord::Migration.remove_foreign_key(:current_table, :foreign_table) # no lock

ActiveRecord::Migration.add_column(:current_table, :column_bigint, :bigint) # no lock

copy_data = lambda do
  CurrentTable.where(column_bigint: nil).where.not(column: nil).in_batches do |batch|
    batch.update_all("column_bigint = column")
  end
end

zwolf

#!/usr/bin/env ruby

if `git diff HEAD spec` =~ /^\+.*,\s?(:focus|focus:\s?true|:focus\s?=>\s?true)/
  puts "\e[31mPlease focus and remove your :focus tags before committing :)"
  exit 1
end

parrish

SELECT bl.pid                 AS blocked_pid,
       a.usename              AS blocked_user,
       ka.query               AS current_statement_in_blocking_process,
       now() - ka.query_start AS blocking_duration,
       kl.pid                 AS blocking_pid,
       ka.usename             AS blocking_user,
       a.query                AS blocked_statement,
       now() - a.query_start  AS blocked_duration
FROM  pg_catalog.pg_locks         bl
 JOIN pg_catalog.pg_stat_activity a  ON a.pid = bl.pid

parrish

#!/bin/sh
# http://stackoverflow.com/a/6262715
# .git/hooks/pre-commit
# chmod +x .git/hooks/pre-commit

# A git hook script to find and fix trailing whitespace
# in your commits. Bypass it with the --no-verify option
# to git-commit
#