Re: [PATCH] Add extra statistics to explain for Nested Loop

Hi, hackers.

Here is the new version of patch that add printing of min, max and total
statistics for time and rows across all loops to EXPLAIN ANALYSE.

1) Please add VERBOSE to display extra statistics.
2) Format of extra statistics is:

a) FORMAT TEXT

> Loop min_time: N max_time: N min_rows: N max_rows: N total_rows: N
> Output: ...

b) FORMAT JSON

> ...
> "Actual Total Time": N,
> "Loop Min Time": N,
> "Loop Max Time": N,
> "Actual Rows": N,
> "Loop Min Rows": N,
> "Loop Max Rows": N,
> "Loop Total Rows": N,
> "Actual Loops": N,
> ...

I hope you find this patch useful.
Please don't hesitate to share any thoughts on this topic!
--
Ekaterina Sokolova
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company