On Mon, Nov 30, 2015 at 02:41:02PM +0100, Shulgin, Oleksandr wrote:
> On Wed, Nov 25, 2015 at 9:13 AM, Lukas Fittl <lu...@fittl.com> wrote:
> On Mon, Nov 23, 2015 at 11:53 PM, Peter Geoghegan <p...@heroku.com> wrote:
> One specific justification he gave for not using pg_stat_statements
> "Doesn’t merge bind vars in IN()" (See slide #11)
> I wonder:
> * How do other people feel about this? Personally, I've seen enough
> problems of this kind in the field that "slippery slope" arguments
> against this don't seem very compelling.
> As someone who runs a little monitoring service thats solely based on
> pg_stat_statements data, ignoring IN list length would certainly be a good
> We currently do this in post-processing, together with other data cleanup
> (e.g. ignoring the length of a VALUES list in an INSERT statement).
> Given the fact that pgss data is normalized & you don't know which plan
> chosen, I don't think distinguishing based on the length of the list helps
> anyone really.
> I see pg_stat_statements as a high-level overview of which queries have
> run, and which ones you might want to look into closer using e.g.
> I still have the plans to try to marry pg_stat_statements and auto_explain for
> the next iteration of "online query plans" extension I was proposing a few
> months ago, and the first thing I was going to look into is rectifying this
> problem with IN() jumbling. So, have a +1 from me.
Is this a TODO?
Bruce Momjian <br...@momjian.us> http://momjian.us
+ As you are, so once was I. As I am, so you will be. +
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