Thread: pgsql: Fix ALTER TABLE .. ADD COLUMN with complex inheritance trees
Fix ALTER TABLE .. ADD COLUMN with complex inheritance trees This command, when used to add a column on a parent table with a complex inheritance tree, tried to update multiple times the same tuple in pg_attribute for a child table when incrementing attinhcount, causing failures with "tuple already updated by self" because of a missing CommandCounterIncrement() between two updates. This exists for a rather long time, so backpatch all the way down. Reported-by: Alexander Lakhin Author: Tender Wang Reviewed-by: Richard Guo Discussion: https://postgr.es/m/18297-b04cd83a55b51e35@postgresql.org Backpatch-through: 12 Branch ------ REL_16_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/51193e7a7d333e2f19048c97a336da436b7d97e9 Modified Files -------------- src/backend/commands/tablecmds.c | 4 ++++ src/test/regress/expected/inherit.out | 17 +++++++++++++++++ src/test/regress/sql/inherit.sql | 9 +++++++++ 3 files changed, 30 insertions(+)