Fix crash with pg_partition_root
Trying to call the function with the top-most parent of a partition tree
was leading to a crash. In this case the correct result is to return
the top-most parent itself.
Reported-by: Álvaro Herrera
Author: Michael Paquier
Reviewed-by: Amit Langote
Discussion: https://postgr.es/m/20190322032612.GA323@alvherre.pgsql
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/2ab6d28d233af17987ea323e3235b2bda89b4f2e
Modified Files
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src/backend/utils/adt/partitionfuncs.c | 10 +++++-
src/test/regress/expected/partition_info.out | 50 ++++++++++++++++++++++++++++
src/test/regress/sql/partition_info.sql | 12 +++++++
3 files changed, 71 insertions(+), 1 deletion(-)