pgsql: Avoid bogus scans of partitions when marking FKs enforced
| От | Álvaro Herrera |
|---|---|
| Тема | pgsql: Avoid bogus scans of partitions when marking FKs enforced |
| Дата | |
| Msg-id | E1uNDcq-000JlB-0R@gemulon.postgresql.org обсуждение исходный текст |
| Список | pgsql-committers |
Avoid bogus scans of partitions when marking FKs enforced Similar to commit cc733ed164c5: when an unenforced foreign key that references a partitioned table is altered to be enforced, we scan the constrained table based on each partition on the referenced partitioned table. This is bogus and likely to cause the ALTER TABLE to fail: we must only scan the constrained table as pointing to the top-level partitioned table. Oversight in commit eec0040c4bcd. Fix by eliding those scans. Author: Amul Sul <sulamul@gmail.com> Reported-by: jian he <jian.universality@gmail.com> Discussion: https://postgr.es/m/CACJufxF1e_gPOLtsDoaE4VCgQPC8KZW_kPAjPR5Rvv4Ew=fb2A@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/e6f98d8848f1803fda32011998c786a1bf4eb87c Modified Files -------------- src/backend/commands/tablecmds.c | 7 ++++-- src/test/regress/expected/foreign_key.out | 41 +++++++++++++++++++------------ src/test/regress/sql/foreign_key.sql | 11 ++++++--- 3 files changed, 37 insertions(+), 22 deletions(-)
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