pgsql: Make generate_queries_for_path_pattern_recurse() interruptible

From: Peter Eisentraut <peter(at)eisentraut(dot)org>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Make generate_queries_for_path_pattern_recurse() interruptible
Date: 2026-08-14 13:23:17
Message-ID: E1wursS-00000000YPu-1Wmw@gemulon.postgresql.org
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Make generate_queries_for_path_pattern_recurse() interruptible

In case of a very long path pattern with each element pattern being
resolved to many graph elements
generate_queries_for_path_pattern_recurse() may take very long time to
generate all the possible graph paths. Make
generate_queries_for_path_pattern_recurse() interruptible so that a
user may be able to cancel such a query if required and the interrupts
are processed in timely manner.

Author: Satyanarayana Narlapuram <satyanarlapuram(at)gmail(dot)com>
Reviewed-by: Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>
Discussion: https://www.postgresql.org/message-id/flat/CAHg%2BQDfDwcM4%3DDSiAV6Ly89YQ5EcMhzO1-9x%3DmGG1WJzODcAig%40mail.gmail.com

Branch
------
REL_19_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/41a300ae3df5015d0779728ee0b4adb866953d31

Modified Files
--------------
src/backend/rewrite/rewriteGraphTable.c | 2 ++
1 file changed, 2 insertions(+)

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