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mlomnicki/list_missing_indexes.rb

Created September 23, 2009 13:37
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List missing indexes
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list_missing_indexes.rb
c = ActiveRecord::Base.connection
c.tables.collect do |t|
columns = c.columns(t).collect(&:name).select {|x| x.ends_with?("_id" || x.ends_with("_type"))}
indexed_columns = c.indexes(t).collect(&:columns).flatten.uniq
unindexed = columns - indexed_columns
unless unindexed.empty?
puts "#{t}: #{unindexed.join(", ")}"
end
end
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