postgresql/doc
Etsuro Fujita 5a20b0219e Fix handling of multiple AFTER ROW triggers on a foreign table.
AfterTriggerExecute() retrieves a fresh tuple or pair of tuples from a
tuplestore and then stores the tuple(s) in the passed-in slot(s) if
AFTER_TRIGGER_FDW_FETCH, while it uses the most-recently-retrieved
tuple(s) stored in the slot(s) if AFTER_TRIGGER_FDW_REUSE.  This was
done correctly before 12, but commit ff11e7f4b broke it by mistakenly
clearing the tuple(s) stored in the slot(s) in that function, leading to
an assertion failure as reported in bug #16139 from Alexander Lakhin.

Also, fix some other issues with the aforementioned commit in passing:

* For tg_newslot, which is a slot added to the TriggerData struct by the
  commit to store new updated tuples, it didn't ensure the slot was NULL
  if there was no such tuple.
* The commit failed to update the documentation about the trigger
  interface.

Author: Etsuro Fujita
Backpatch-through: 12
Discussion: https://postgr.es/m/16139-94f9ccf0db6119ec%40postgresql.org
2019-12-10 18:00:30 +09:00
..
src Fix handling of multiple AFTER ROW triggers on a foreign table. 2019-12-10 18:00:30 +09:00
KNOWN_BUGS
MISSING_FEATURES
Makefile Remove maintainer-check target, fold into normal build 2013-10-10 20:11:56 -04:00
TODO Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00