SELECT checksum AS `checksum`,
  LEFT(dimension.sample,20) AS `snippet`,
  ROUND(SUM(Rows_examined_sum)/SUM(rows_sent_sum),2) AS `index_ratio`,
  SUM(Query_time_sum) / SUM(ts_cnt) AS `query_time_avg`,
  ROUND(SUM(Rows_sent_sum)/SUM(ts_cnt),0) AS `rows_sent_avg`,
  SUM(ts_cnt) AS `ts_cnt`,
  SUM(Query_time_sum) AS `Query_time_sum`,
  SUM(Lock_time_sum) AS `Lock_time_sum`,
  SUM(Rows_sent_sum) AS `Rows_sent_sum`,
  SUM(Rows_examined_sum) AS `Rows_examined_sum`,
  SUM(Tmp_table_sum) AS `Tmp_table_sum`,
  SUM(Filesort_sum) AS `Filesort_sum`,
  SUM(Full_scan_sum) AS `Full_scan_sum`
 FROM `global_query_review` AS `fact` 
 JOIN `global_query_review_history` AS `dimension` USING (`checksum`) 
 WHERE dimension.ts_min >= "2024-09-07 19:30:45"
  AND dimension.ts_min <= "2024-09-08 19:30:45"
 GROUP BY checksum 
 ORDER BY Query_time_sum DESC 
 LIMIT 20