database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-30 11:03:19 +03:00
Code Activity

Add a "provariadic" column to pg_proc to eliminate the remarkably expensive

Browse Source 
need to deconstruct proargmodes for each pg_proc entry inspected by
FuncnameGetCandidates().  Fixes function lookup performance regression
caused by yesterday's variadic-functions patch.

In passing, make pg_proc.probin be NULL, rather than a dummy value '-',
in cases where it is not actually used for the particular type of function.
This should buy back some of the space cost of the extra column.
This commit is contained in:
Tom Lane
2008-07-16 16:55:24 +00:00
parent 895a4bccb6
commit 6563e9e2e8
14 changed files with 2286 additions and 2213 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
doc/src/sgml/catalogs.sgml
View File

@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/catalogs.sgml,v 2.169 2008/07/16 01:30:21 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/catalogs.sgml,v 2.170 2008/07/16 16:55:23 tgl Exp $ -->
<!--
Documentation of the system catalogs, directed toward PostgreSQL developers
-->
@ -3569,6 +3569,14 @@
<entry>Estimated number of result rows (zero if not <structfield>proretset</>)</entry>
</row>
<row>
<entry><structfield>provariadic</structfield></entry>
<entry><type>oid</type></entry>
<entry><literal><link linkend="catalog-pg-type"><structname>pg_type</structname></link>.oid</literal></entry>
<entry>Data type of the variadic array parameter's elements,
or zero if the function does not have a variadic parameter</entry>
</row>
<row>
<entry><structfield>proisagg</structfield></entry>
<entry><type>bool</type></entry>