Horton

Disallow CREATE STATISTICS on system catalogs

Tomas Vondra <tomas.vondra@postgresql.org>

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Commit: 943a113bcb6fb913814ae32cbd4dd1ed29498750
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Date: 2021-01-15T22:33:16Z
Releases: 12.6 
Disallow CREATE STATISTICS on system catalogs

Add a check that CREATE STATISTICS does not add extended statistics on
system catalogs, similarly to indexes etc.  It can be overriden using
the allow_system_table_mods GUC.

This bug exists since 7b504eb282c, adding the extended statistics, so
backpatch all the way back to PostgreSQL 10.

Author: Tomas Vondra
Reported-by: Dean Rasheed
Backpatch-through: 10
Discussion: https://postgr.es/m/CAEZATCXAPrrOKwEsyZKQ4uzzJQWBCt6QAvOcgqRGdWwT1zb%2BrQ%40mail.gmail.com

Files

PathChange+/−
src/backend/commands/statscmds.c modified +7 −0
src/test/regress/expected/stats_ext.out modified +7 −5
src/test/regress/sql/stats_ext.sql modified +7 −5

Discussion