# File lib/jdbc_adapter/jdbc_postgre.rb, line 90
    def postgresql_version
      @postgresql_version ||=
        begin
          value = select_value('SELECT version()')
          if value =~ /PostgreSQL (\d+)\.(\d+)\.(\d+)/
            ($1.to_i * 10000) + ($2.to_i * 100) + $3.to_i
          else
            0
          end
        end
    end