text: /* 10 queries that have longest execution time in aggregate */
  
  SELECT
    interval '1 millisecond' * total_time AS total_exec_time,
    to_char((total_time/sum(total_time) OVER()) * 100, 'FM90D0') || '%'  AS prop_exec_time,
    to_char(calls, 'FM999G999G999G990') AS ncalls,
    interval '1 millisecond' * (blk_read_time + blk_write_time) AS sync_io_time,
    query AS query
  FROM
    pg_stat_statements
  WHERE
    userid = (
      SELECT
        usesysid
      FROM
        pg_user
      WHERE
        usename = current_user
      LIMIT
        1
    )
  ORDER BY
    total_time DESC
  LIMIT
    10;
  