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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
..
access Adjust design of per-worker parallel seqscan data struct 2021-03-30 10:17:09 +13:00
bootstrap Update copyright for 2021 2021-01-02 13:06:25 -05:00
catalog Add unistr function 2021-03-29 11:56:53 +02:00
commands Extended statistics on expressions 2021-03-27 00:01:11 +01:00
common Improve reporting for syntax errors in multi-line JSON data. 2021-03-01 16:44:17 -05:00
datatype Update copyright for 2021 2021-01-02 13:06:25 -05:00
executor Add support for asynchronous execution. 2021-03-31 18:45:00 +09:00
fe_utils Refactor and generalize the ParallelSlot machinery. 2021-03-11 13:17:46 -05:00
foreign Add support for asynchronous execution. 2021-03-31 18:45:00 +09:00
jit Update copyright for 2021 2021-01-02 13:06:25 -05:00
lib Allow users of simplehash.h to perform direct deletions 2021-03-30 19:56:50 +13:00
libpq Allow matching the DN of a client certificate for authentication 2021-03-29 15:49:39 -04:00
mb Add mbverifystr() functions specific to each encoding. 2021-01-28 14:40:07 +02:00
nodes Allow an alias to be attached to a JOIN ... USING 2021-03-31 17:10:50 +02:00
optimizer Add support for asynchronous execution. 2021-03-31 18:45:00 +09:00
parser Allow an alias to be attached to a JOIN ... USING 2021-03-31 17:10:50 +02:00
partitioning ALTER TABLE ... DETACH PARTITION ... CONCURRENTLY 2021-03-25 18:00:28 -03:00
port Add missing pthread_barrier_t. 2021-03-10 17:44:04 +13:00
portability Fix another portability bug in recent pgbench commit. 2021-03-10 23:20:41 +13:00
postmaster Remove temporary files after backend crash 2021-03-18 17:38:28 +01:00
regex Improve memory management in regex compiler. 2021-02-26 13:52:10 -05:00
replication Add a xid argument to the filter_prepare callback for output plugins. 2021-03-30 10:34:43 +05:30
rewrite SEARCH and CYCLE clauses 2021-02-01 14:32:51 +01:00
snowball Update snowball 2021-02-19 08:10:15 +01:00
statistics Extended statistics on expressions 2021-03-27 00:01:11 +01:00
storage Add support for asynchronous execution. 2021-03-31 18:45:00 +09:00
tcop Remove server and libpq support for old FE/BE protocol version 2. 2021-03-04 10:45:55 +02:00
tsearch Don't leak compiled regex(es) when an ispell cache entry is dropped. 2021-03-18 22:22:47 -04:00
utils Add errhint_plural() function and make use of it 2021-03-31 09:16:25 +02:00
.gitignore Refactor dlopen() support 2018-09-06 11:33:04 +02:00
c.h Work around issues in MinGW-64's setjmp/longjmp support. 2021-03-15 12:34:17 -04:00
fmgr.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
funcapi.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
getaddrinfo.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
getopt_long.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
Makefile Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
miscadmin.h Make archiver process an auxiliary process. 2021-03-15 13:13:14 +09:00
pg_config.h.in Remove useless configure probe for <lz4/lz4.h>. 2021-03-22 11:20:44 -04:00
pg_config_ext.h.in Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_manual.h Fix concurrency issues with WAL segment recycling on Windows 2021-03-22 14:02:26 +09:00
pg_getopt.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_trace.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pgstat.h Add support for asynchronous execution. 2021-03-31 18:45:00 +09:00
pgtar.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pgtime.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
port.h Move bsearch_arg to src/port 2021-03-23 00:11:22 +01:00
postgres.h Mostly-cosmetic adjustments of TOAST-related macros. 2021-03-22 13:43:10 -04:00
postgres_ext.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
postgres_fe.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
rusagestub.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
windowapi.h Update copyright for 2021 2021-01-02 13:06:25 -05:00