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author | Tom Lane <tgl@sss.pgh.pa.us> | 2016-11-25 13:44:48 -0500 |
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committer | Tom Lane <tgl@sss.pgh.pa.us> | 2016-11-25 13:44:48 -0500 |
commit | 6cbe84c826b51a159825e9843184c7b4a740e4ae (patch) | |
tree | 6de01057ba40f732d6731f73efd4ff4c7fd20ea1 /src/tutorial/funcs.c | |
parent | 7816d13563b74379c9db618e46883c6db5fc0680 (diff) | |
download | postgresql-6cbe84c826b51a159825e9843184c7b4a740e4ae.tar.gz postgresql-6cbe84c826b51a159825e9843184c7b4a740e4ae.zip |
Check for pending trigger events on far end when dropping an FK constraint.
When dropping a foreign key constraint with ALTER TABLE DROP CONSTRAINT,
we refuse the drop if there are any pending trigger events on the named
table; this ensures that we won't remove the pg_trigger row that will be
consulted by those events. But we should make the same check for the
referenced relation, else we might remove a due-to-be-referenced pg_trigger
row for that relation too, resulting in "could not find trigger NNN" or
"relation NNN has no triggers" errors at commit. Per bug #14431 from
Benjie Gillam. Back-patch to all supported branches.
Report: <20161124114911.6530.31200@wrigleys.postgresql.org>
Diffstat (limited to 'src/tutorial/funcs.c')
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