On Thu, May 16, 2013 at 06:49:33PM -0400, Tom Lane wrote: > "'Bruce Momjian'" <br...@momjian.us> writes: > > On Thu, May 16, 2013 at 08:38:59PM +0530, Amit Kapila wrote: > >> Reduce query processing overhead by avoiding insertion of useless plan > >> nodes > >> OR > >> Improve performance of certain kind of queries by avoiding extra processing > >> of doing projection > >> > >> This applies to queries doing identity projection ("SELECT * FROM ...") for > >> partitioned tables. > > > Uh, that's pretty complex for our release notes, and hard to understand > > for most users. All they will know is that PG is faster --- we don't > > document every speedup. > > No, but this is user-visible if they look at EXPLAIN output, and people > might wonder why they were getting different results. > > Possibly text like > > Omit unnecessary Result and Limit nodes from query plans.
Yes, that would be user-visible, though we rarely add details like that. What queries are faster, that users would understand? -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers