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catch devision by zero #10

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33 changes: 16 additions & 17 deletions sql/query_stat_cpu_time.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -10,38 +10,37 @@ group by query
)

SELECT
(100*total_time/(SELECT t FROM s))::numeric(20,2) AS time_percent,
(100*(blk_read_time+blk_write_time)/(SELECT iot FROM s))::numeric(20,2) AS iotime_percent,
(100*(total_time-blk_read_time-blk_write_time)/(SELECT cput FROM s))::numeric(20,2) AS cputime_percent,
(100*total_time/NULLIF((SELECT t FROM s), 0))::numeric(20,2) AS time_percent,
(100*(blk_read_time+blk_write_time)/NULLIF((SELECT iot FROM s), 0))::numeric(20,2) AS iotime_percent,
(100*(total_time-blk_read_time-blk_write_time)/NULLIF((SELECT cput FROM s), 0))::numeric(20,2) AS cputime_percent,
total_time::numeric(20,2) as total_time,
(total_time*1000/calls)::numeric(20,2) AS avg_time,
((blk_read_time+blk_write_time)*1000/calls)::numeric(20,2) AS avg_io_time,
(total_time*1000/NULLIF(calls, 0))::numeric(20,2) AS avg_time,
((blk_read_time+blk_write_time)*1000/NULLIF(calls, 0))::numeric(20,2) AS avg_io_time,
calls,
(100*calls/(SELECT s FROM s))::numeric(20,2) AS calls_percent,
(100*calls/NULLIF((SELECT s FROM s), 0))::numeric(20,2) AS calls_percent,
rows,
(100*rows/(SELECT r from s))::numeric(20,2) AS row_percent,
(100*rows/NULLIF((SELECT r from s), 0))::numeric(20,2) AS row_percent,
query
FROM _pg_stat_statements
WHERE
(total_time-blk_read_time-blk_write_time)/(SELECT cput FROM s)>=0.02
(total_time-blk_read_time-blk_write_time)/NULLIF((SELECT cput FROM s), 0)>=0.02

UNION all

SELECT
(100*sum(total_time)/(SELECT t FROM s))::numeric(20,2) AS time_percent,
(100*sum(blk_read_time+blk_write_time)/(SELECT iot FROM s))::numeric(20,2) AS iotime_percent,
(100*sum(total_time-blk_read_time-blk_write_time)/(SELECT cput FROM s))::numeric(20,2) AS cputime_percent,
(100*sum(total_time)/NULLIF((SELECT t FROM s), 0))::numeric(20,2) AS time_percent,
(100*sum(blk_read_time+blk_write_time)/NULLIF((SELECT iot FROM s), 0))::numeric(20,2) AS iotime_percent,
(100*sum(total_time-blk_read_time-blk_write_time)/NULLIF((SELECT cput FROM s), 0))::numeric(20,2) AS cputime_percent,
sum(total_time)::numeric(20,2),
(sum(total_time)*1000/sum(calls))::numeric(10,3) AS avg_time,
(sum(blk_read_time+blk_write_time)*1000/sum(calls))::numeric(10,3) AS avg_io_time,
(sum(total_time)*1000/NULLIF(sum(calls), 0))::numeric(10,3) AS avg_time,
(sum(blk_read_time+blk_write_time)*1000/NULLIF(sum(calls), 0))::numeric(10,3) AS avg_io_time,
sum(calls),
(100*sum(calls)/(SELECT s FROM s))::numeric(20,2) AS calls_percent,
(100*sum(calls)/NULLIF((SELECT s FROM s), 0))::numeric(20,2) AS calls_percent,
sum(rows),
(100*sum(rows)/(SELECT r from s))::numeric(20,2) AS row_percent,
(100*sum(rows)/NULLIF((SELECT r from s), 0))::numeric(20,2) AS row_percent,
'other' AS query
FROM _pg_stat_statements
WHERE
(total_time-blk_read_time-blk_write_time)/(SELECT cput FROM s)<0.02
(total_time-blk_read_time-blk_write_time)/NULLIF((SELECT cput FROM s), 0)<0.02

ORDER BY 3 DESC;