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Tom Lane 00d4f2af8b Improve connection-failure error handling in contrib/postgres_fdw. ... postgres_fdw tended to say "unknown error" if it tried to execute a command on an already-dead connection, because some paths in libpq just return a null PGresult for such cases. Out-of-memory might result in that, too. To fix, pass the PGconn to pgfdw_report_error, and look at its PQerrorMessage() string if we can't get anything out of the PGresult. Also, fix the transaction-exit logic to reliably drop a dead connection. It was attempting to do that already, but it assumed that only connection cache entries with xact_depth > 0 needed to be examined. The folly in that is that if we fail while issuing START TRANSACTION, we'll not have bumped xact_depth. (At least for the case I was testing, this fix masks the other problem; but it still seems like a good idea to have the PGconn fallback logic.) Per investigation of bug #9087 from Craig Lucas. Backpatch to 9.3 where this code was introduced.		12 years ago
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expected	Improve updatability checking for views and foreign tables.	13 years ago
sql	Improve updatability checking for views and foreign tables.	13 years ago
.gitignore	…
Makefile	…
connection.c	Improve connection-failure error handling in contrib/postgres_fdw.	12 years ago
deparse.c	Update copyright for 2014	12 years ago
option.c	Update copyright for 2014	12 years ago
postgres_fdw--1.0.sql	…
postgres_fdw.c	Improve connection-failure error handling in contrib/postgres_fdw.	12 years ago
postgres_fdw.control	…
postgres_fdw.h	Improve connection-failure error handling in contrib/postgres_fdw.	12 years ago