Thread: pgsql: Preserve clustered index after rewrites with ALTER TABLE
Preserve clustered index after rewrites with ALTER TABLE A table rewritten by ALTER TABLE would lose tracking of an index usable for CLUSTER. This setting is tracked by pg_index.indisclustered and is controlled by ALTER TABLE, so some extra work was needed to restore it properly. Note that ALTER TABLE only marks the index that can be used for clustering, and does not do the actual operation. Author: Amit Langote, Justin Pryzby Reviewed-by: Ibrar Ahmed, Michael Paquier Discussion: https://postgr.es/m/20200202161718.GI13621@telsasoft.com Backpatch-through: 9.5 Branch ------ REL_12_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/3e62dd3a937b7da84e8ae126c7bf8319c1cd5c08 Modified Files -------------- src/backend/commands/tablecmds.c | 46 +++++++++++++++++++++++++++++ src/backend/utils/cache/lsyscache.c | 23 +++++++++++++++ src/include/utils/lsyscache.h | 1 + src/test/regress/expected/alter_table.out | 48 +++++++++++++++++++++++++++++++ src/test/regress/sql/alter_table.sql | 25 ++++++++++++++++ 5 files changed, 143 insertions(+)