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Andrew Dunstan 33a377608f IS JSON predicate 
This patch intrdocuces the SQL standard IS JSON predicate. It operates
on text and bytea values representing JSON as well as on the json and
jsonb types. Each test has an IS and IS NOT variant. The tests are:

IS JSON [VALUE]
IS JSON ARRAY
IS JSON OBJECT
IS JSON SCALAR
IS JSON  WITH | WITHOUT UNIQUE KEYS

These are mostly self-explanatory, but note that IS JSON WITHOUT UNIQUE
KEYS is true whenever IS JSON is true, and IS JSON WITH UNIQUE KEYS is
true whenever IS JSON is true except it IS JSON OBJECT is true and there
are duplicate keys (which is never the case when applied to jsonb values).

Nikita Glukhov

Reviewers have included (in no particular order) Andres Freund, Alexander
Korotkov, Pavel Stehule, Andrew Alsup, Erik Rijkers, Zihong Yu,
Himanshu Upadhyaya, Daniel Gustafsson, Justin Pryzby.

Discussion: https://postgr.es/m/cd0bb935-0158-78a7-08b5-904886deac4b@postgrespro.ru
2022-03-28 15:37:08 -04:00
..
access Fix replay of create database records on standby 2022-03-25 13:16:21 +01:00
bootstrap Update copyright for 2022 2022-01-07 19:04:57 -05:00
catalog Mark pg_stat_get_subscription_stats() strict. 2022-03-27 21:47:26 -07:00
commands Add support for MERGE SQL command 2022-03-28 16:47:48 +02:00
common Replace BASE_BACKUP COMPRESSION_LEVEL option with COMPRESSION_DETAIL. 2022-03-23 09:19:14 -04:00
datatype Update copyright for 2022 2022-01-07 19:04:57 -05:00
executor IS JSON predicate 2022-03-28 15:37:08 -04:00
fe_utils Allow pgbench to retry in some cases. 2022-03-23 19:05:45 +09:00
foreign Update copyright for 2022 2022-01-07 19:04:57 -05:00
jit Update copyright for 2022 2022-01-07 19:04:57 -05:00
lib dshash: Add sequential scan support. 2022-03-10 12:57:05 -08:00
libpq Refactor code related to pg_hba_file_rules() into new file 2022-03-24 12:42:30 +09:00
mb Update copyright for 2022 2022-01-07 19:04:57 -05:00
nodes IS JSON predicate 2022-03-28 15:37:08 -04:00
optimizer Add support for MERGE SQL command 2022-03-28 16:47:48 +02:00
parser IS JSON predicate 2022-03-28 15:37:08 -04:00
partitioning Update copyright for 2022 2022-01-07 19:04:57 -05:00
port Refactor DLSUFFIX handling 2022-03-25 08:56:02 +01:00
portability Update copyright for 2022 2022-01-07 19:04:57 -05:00
postmaster Allow archiving via loadable modules. 2022-02-03 14:05:02 -05:00
regex Update copyright for 2022 2022-01-07 19:04:57 -05:00
replication Allow specifying column lists for logical replication 2022-03-26 01:01:27 +01:00
rewrite Update copyright for 2022 2022-01-07 19:04:57 -05:00
snowball Update copyright for 2022 2022-01-07 19:04:57 -05:00
statistics Add stxdinherit flag to pg_statistic_ext_data 2022-01-16 13:38:01 +01:00
storage Fix possible recovery trouble if TRUNCATE overlaps a checkpoint. 2022-03-24 14:52:28 -04:00
tcop Add support for MERGE SQL command 2022-03-28 16:47:48 +02:00
tsearch Update copyright for 2022 2022-01-07 19:04:57 -05:00
utils IS JSON predicate 2022-03-28 15:37:08 -04:00
.gitignore Refactor dlopen() support 2018-09-06 11:33:04 +02:00
c.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
fmgr.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
funcapi.h Create routine able to set single-call SRFs for Materialize mode 2022-03-07 10:26:29 +09:00
getaddrinfo.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
getopt_long.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
Makefile Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
miscadmin.h Remove MaxBackends variable in favor of GetMaxBackends() function. 2022-02-08 15:53:19 -05:00
pg_config.h.in Refactor DLSUFFIX handling 2022-03-25 08:56:02 +01:00
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 DROP {DATABASE,TABLESPACE} on Windows. 2022-02-12 10:21:23 +13:00
pg_getopt.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
pg_trace.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
pgstat.h pgstat: reorder pgstat.[ch] contents. 2022-03-21 16:21:00 -07:00
pgtar.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
pgtime.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
port.h Clean up messy API for src/port/thread.c. 2022-01-11 13:46:20 -05:00
postgres.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
postgres_ext.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
postgres_fe.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
rusagestub.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
windowapi.h Update copyright for 2022 2022-01-07 19:04:57 -05:00