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Support writable foreign tables.

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This patch adds the core-system infrastructure needed to support updates
on foreign tables, and extends contrib/postgres_fdw to allow updates
against remote Postgres servers.  There's still a great deal of room for
improvement in optimization of remote updates, but at least there's basic
functionality there now.

KaiGai Kohei, reviewed by Alexander Korotkov and Laurenz Albe, and rather
heavily revised by Tom Lane.
This commit is contained in:
Tom Lane
2013-03-10 14:14:53 -04:00
parent 7f49a67f95
commit 21734d2fb8
29 changed files with 3672 additions and 347 deletions
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1
contrib/file_fdw/input/file_fdw.source
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@ -118,7 +118,6 @@ SELECT tableoid::regclass, b FROM agg_csv;
INSERT INTO agg_csv VALUES(1,2.0);
UPDATE agg_csv SET a = 1;
DELETE FROM agg_csv WHERE a = 100;
SELECT * FROM agg_csv FOR UPDATE OF agg_csv;
-- but this should be ignored
SELECT * FROM agg_csv FOR UPDATE;