Search Postgresql Archives

When are SQL functions inlined & how can I tell?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I've been having some serious (> 100x) slowness in some of my code
which uses nice maintainable little SQL functions versus when I do
the same code as a big messy expression.  I got rid of STRICT, I've
tried STABLE and even IMMUTABLE and I can't seem to get the speed
difference to go away, so here are some questions:

(1) What are the current criteria for when an SQL function called
within another SQL function will be inlined?

(2) Is there some easy way to tell without massive logging whether
a particular function has been inlined?  I've tried doing various

EXPLAIN ... SELECT foo(...);

kinds of things where foo() calls bar() and I don't see that I can
tell anything about the inline status of either function.

Thanks,

_Greg

J. Greg Davidson

-- 
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux