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Peter Eisentraut 055fee7eb4 Allow an alias to be attached to a JOIN ... USING 
This allows something like

    SELECT ... FROM t1 JOIN t2 USING (a, b, c) AS x

where x has the columns a, b, c and unlike a regular alias it does not
hide the range variables of the tables being joined t1 and t2.

Per SQL:2016 feature F404 "Range variable for common column names".

Reviewed-by: Vik Fearing <vik.fearing@2ndquadrant.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/454638cf-d563-ab76-a585-2564428062af@2ndquadrant.com
 		2021-03-31 17:10:50 +02:00
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backend Allow an alias to be attached to a JOIN ... USING 2021-03-31 17:10:50 +02:00
bin Add support for --extension in pg_dump 2021-03-31 09:12:34 +09:00
common pg_upgrade: Check version of target cluster binaries 2021-03-03 09:45:56 +01:00
fe_utils psql: call clearerr() just before printing 2021-03-29 18:34:39 -03:00
include Allow an alias to be attached to a JOIN ... USING 2021-03-31 17:10:50 +02:00
interfaces Improve PQtrace() output format 2021-03-30 20:12:34 -03:00
makefiles Remove libpq.rc, use win32ver.rc for libpq 2020-01-15 15:06:12 +01:00
pl Remove extra increment of plpgsql's statement counter for FOR loops. 2021-02-02 14:35:12 -05:00
port Move bsearch_arg to src/port 2021-03-23 00:11:22 +01:00
template Further tweaking of PG_SYSROOT heuristics for macOS. 2021-01-20 12:07:23 -05:00
test Allow an alias to be attached to a JOIN ... USING 2021-03-31 17:10:50 +02:00
timezone Update time zone data files to tzdata release 2021a. 2021-01-24 16:29:47 -05:00
tools Revert "Enable parallel SELECT for "INSERT INTO ... SELECT ..."." 2021-03-24 11:29:15 +05:30
tutorial tutorial: land height is "elevation", not "altitude" 2021-03-10 20:25:19 -05:00
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Makefile Remove the option to build thread_test.c outside configure. 2020-10-21 12:08:48 -04:00
Makefile.global.in Introduce --with-ssl={openssl} as a configure option 2021-02-01 19:19:44 +09:00
Makefile.shlib Add PostgreSQL home page to --help output 2020-02-28 13:12:21 +01:00
nls-global.mk Add errhint_plural() function and make use of it 2021-03-31 09:16:25 +02:00