Re: [HACKERS] BUG: pg_stat_statements query normalization issueswith combined queries

>> I was expecting the 2 combined queries either to be separated in individual 
>> queries "SELECT data FROM Stuff WHERE id = ?" or in one large queries with 
>> three ?, but not the above result...
>
> Oops, I forgot the attachement, see repeat script on 9.6.1

After some quick investigation, I concluded that the issue is that the 
whole combined query string is used instead of the part refering to the 
actual query being processed.

As a result:
 - the full un-normalized string is used for both BEGIN & COMMIT   => n shared entries, one for each actual query, begin & commit are mixed together
 - the fist-part only normalized string is used for each SELECT   => 1 shared entry with "query" is the first partially      normalied encountered combined query

-- 
Fabien.