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| author | Michael Paquier <michael@paquier.xyz> | 2024-01-24 14:20:14 +0900 |
|---|---|---|
| committer | Michael Paquier <michael@paquier.xyz> | 2024-01-24 14:20:14 +0900 |
| commit | 2f724283719e75261d3b649d20235e4f1542be04 (patch) | |
| tree | 7dffc9b2347887943807cc3ac669fadecf50cb09 /src/backend/commands/tablecmds.c | |
| parent | 81038228582aa92718be2afcb7ddb67a5a19fa43 (diff) | |
| download | postgresql-2f724283719e75261d3b649d20235e4f1542be04.tar.gz postgresql-2f724283719e75261d3b649d20235e4f1542be04.zip | |
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
Diffstat (limited to 'src/backend/commands/tablecmds.c')
| -rw-r--r-- | src/backend/commands/tablecmds.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c index a7ceb37fb7d..6f8b9007583 100644 --- a/src/backend/commands/tablecmds.c +++ b/src/backend/commands/tablecmds.c @@ -6001,6 +6001,10 @@ ATExecAddColumn(List **wqueue, AlteredTableInfo *tab, Relation rel, colDef->colname, RelationGetRelationName(rel)))); table_close(attrdesc, RowExclusiveLock); + + /* Make the child column change visible */ + CommandCounterIncrement(); + return InvalidObjectAddress; } } |