On Fri, Feb 21, 2014 at 2:37 PM, Alexey Klyukin wrote:
> Hopefully I'll be able to give it a spin next week and will let you know
> whether the patch improved the execution plans in our environment.
9.3.3 is out this week; you'll have to wait a few months for this if
you're using standard package
Thank you!
Hopefully I'll be able to give it a spin next week and will let you know
whether the patch improved the execution plans in our environment.
Sincerely,
--
Alexey Klyukin
I wrote:
> Hmm. IIRC the text to enum cast is considered stable not immutable, which
> is why that doesn't get folded to a Const on sight. However, it seems
> like it'd be okay for scalararraysel() to reduce stable expressions for
> estimation purposes, ie it should be using estimate_expression_v
Alexey Klyukin writes:
> We had a problem with PostgreSQL not using an index scan in 2 similar
> queries, the only difference between them is the array cast from text[] to
> location_type[] (array of enum values).
Hmm. IIRC the text to enum cast is considered stable not immutable, which
is why t
Hello,
We had a problem with PostgreSQL not using an index scan in 2 similar
queries, the only difference between them is the array cast from text[] to
location_type[] (array of enum values).
The execution plans are the following:
1.
Hash Join (cost=1.68..64194.88 rows=962149 width=62) (actual
