db/migrate/20121009205010_postgres_create_integer_cast.rb


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class PostgresCreateIntegerCast < ActiveRecord::Migration
  def up
    execute <<-SQL
      CREATE CAST (integer AS text) WITH INOUT AS IMPLICIT;
    SQL
    rescue ActiveRecord::StatementInvalid
  end

  def down
    execute <<-SQL
      DROP CAST (integer AS text);
    SQL
    rescue ActiveRecord::StatementInvalid
  end
end