Fix TRUNCATE .. CASCADE on partitions
When running TRUNCATE CASCADE on a child of a partitioned table
referenced by another partitioned table, the truncate was not applied to
partitions of the referencing table; this could leave rows violating the
constraint in the referencing partitioned table. Repair by walking the
pg_constraint chain all the way up to the topmost referencing table.
Note: any partitioned tables containing FKs that reference other
partitioned tables should be checked for possible violating rows, if
TRUNCATE has occurred in partitions of the referenced table.
Reported-by: Christophe Courtois
Author: Jehan-Guillaume de Rorthais
Discussion: https://postgr.es/m/20200204183906.115f693e@firost
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/9710d3d4a87f428a10f63015a0d75ccf028dd137
Modified Files
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doc/src/sgml/ref/truncate.sgml | 3 ++
src/backend/catalog/heap.c | 84 +++++++++++++++++++++++++++++++++-
src/test/regress/expected/truncate.out | 50 ++++++++++++++++++++
src/test/regress/sql/truncate.sql | 38 +++++++++++++++
4 files changed, 173 insertions(+), 2 deletions(-)