Robert Haas 1bc0100d27 postgres_fdw: Push down UPDATE/DELETE joins to remote servers. ... Commit 0bf3ae88af allowed direct foreign table modification; instead of fetching each row, updating it locally, and then pushing the modification back to the remote side, we would instead do all the work on the remote server via a single remote UPDATE or DELETE command. However, that commit only enabled this optimization when join tree consisted only of the target table. This change allows the same optimization when an UPDATE statement has a FROM clause or a DELETE statement has a USING clause. This works much like ordinary foreign join pushdown, in that the tables must be on the same remote server, relevant parts of the query must be pushdown-safe, and so forth. Etsuro Fujita, reviewed by Ashutosh Bapat, Rushabh Lathia, and me. Some formatting corrections by me. Discussion: http://postgr.es/m/5A57193A.2080003@lab.ntt.co.jp Discussion: http://postgr.es/m/b9cee735-62f8-6c07-7528-6364ce9347d0@lab.ntt.co.jp		2018-02-07 15:34:30 -05:00
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expected	postgres_fdw: Push down UPDATE/DELETE joins to remote servers.	2018-02-07 15:34:30 -05:00
sql	postgres_fdw: Push down UPDATE/DELETE joins to remote servers.	2018-02-07 15:34:30 -05:00
.gitignore	Add postgres_fdw contrib module.	2013-02-21 05:27:16 -05:00
connection.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
deparse.c	postgres_fdw: Push down UPDATE/DELETE joins to remote servers.	2018-02-07 15:34:30 -05:00
Makefile	Allow postgres_fdw to ship extension funcs/operators for remote execution.	2015-11-03 18:42:18 -05:00
option.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
postgres_fdw--1.0.sql	Add postgres_fdw contrib module.	2013-02-21 05:27:16 -05:00
postgres_fdw.c	postgres_fdw: Push down UPDATE/DELETE joins to remote servers.	2018-02-07 15:34:30 -05:00
postgres_fdw.control	Add postgres_fdw contrib module.	2013-02-21 05:27:16 -05:00
postgres_fdw.h	postgres_fdw: Push down UPDATE/DELETE joins to remote servers.	2018-02-07 15:34:30 -05:00
shippable.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00