database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-12-19 17:02:53 +03:00
Code Activity

Transfer statistics during pg_upgrade.

Browse Source 
Add support to pg_dump for dumping stats, and use that during
pg_upgrade so that statistics are transferred during upgrade. In most
cases this removes the need for a costly re-analyze after upgrade.

Some statistics are not transferred, such as extended statistics or
statistics with a custom stakind.

Now pg_dump accepts the options --schema-only, --no-schema,
--data-only, --no-data, --statistics-only, and --no-statistics; which
allow all combinations of schema, data, and/or stats. The options are
named this way to preserve compatibility with the previous
--schema-only and --data-only options.

Statistics are in SECTION_DATA, unless the object itself is in
SECTION_POST_DATA.

The stats are represented as calls to pg_restore_relation_stats() and
pg_restore_attribute_stats().

Author: Corey Huinker, Jeff Davis
Reviewed-by: Jian He
Discussion: https://postgr.es/m/CADkLM=fzX7QX6r78fShWDjNN3Vcr4PVAnvXxQ4DiGy6V=0bCUA@mail.gmail.com
Discussion: https://postgr.es/m/CADkLM%3DcB0rF3p_FuWRTMSV0983ihTRpsH%2BOCpNyiqE7Wk0vUWA%40mail.gmail.com
This commit is contained in:
Jeff Davis
2025-02-20 01:29:06 -08:00
parent 7da344b9f8
commit 1fd1bd8710
22 changed files with 858 additions and 75 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/test/perl/PostgreSQL/Test/AdjustUpgrade.pm
View File

@@ -294,6 +294,11 @@ sub adjust_old_dumpfile
# Version comments will certainly not match.
$dump =~ s/^-- Dumped from database version.*\n//mg;
# Same with version argument to pg_restore_relation_stats() or
# pg_restore_attribute_stats().
$dump =~ s ['version', '${old_version}\d{4}'::integer,]
['version', '000000'::integer,]mg;
if ($old_version < 16)
{
# Fix up some view queries that no longer require table-qualification.
@@ -626,6 +631,11 @@ sub adjust_new_dumpfile
# Version comments will certainly not match.
$dump =~ s/^-- Dumped from database version.*\n//mg;
# Same with version argument to pg_restore_relation_stats() or
# pg_restore_attribute_stats().
$dump =~ s ['version', '\d{6}'::integer,]
['version', '000000'::integer,]mg;
if ($old_version < 14)
{
# Suppress noise-word uses of IN in CREATE/ALTER PROCEDURE.