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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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5
doc/src/sgml/postgres-fdw.sgml
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@ -61,7 +61,10 @@
<para>
Now you need only <command>SELECT</> from a foreign table to access
the data stored in its underlying remote table.
the data stored in its underlying remote table. You can also modify
the remote table using <command>INSERT</>, <command>UPDATE</>, or
<command>DELETE</>. (Of course, the remote user you have specified
in your user mapping must have privileges to do these things.)
</para>
<para>