Hi,
As per the following code, t1 is a remote table through postgres_fdw:
test=# BEGIN;
BEGIN
test=# SELECT * FROM t1;
...
test=# PREPARE TRANSACTION 'gxid1';
ERROR: cannot prepare a transaction that modified remote tables
I have attached a patch to the documentation that adds remote tables to the list of objects where any operation prevent using a prepared transaction, currently it is just notified "operations involving temporary tables or the session's temporary namespace".
The second patch modify the message returned by postgres_fdw as per the SELECT statement above the message should be more comprehensible with:
ERROR: cannot PREPARE a transaction that has operated on remote tables
like for temporary objects:
ERROR: cannot PREPARE a transaction that has operated on temporary objects
Best regards,
--
Gilles
--
Gilles Darold
http://www.darold.net/
