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| author | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2023-03-31 22:34:04 +0200 |
|---|---|---|
| committer | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2023-03-31 22:34:04 +0200 |
| commit | 6ee30209a6f161d0a267a33f090c70c579c87c00 (patch) | |
| tree | eda2b3a9f0a61f3fc484819b39abf1eb130e0d88 /src/include/utils/jsonfuncs.h | |
| parent | a2a0c7c29e47f39da905577659e66b0086b769cc (diff) | |
| download | postgresql-6ee30209a6f161d0a267a33f090c70c579c87c00.tar.gz postgresql-6ee30209a6f161d0a267a33f090c70c579c87c00.zip | |
SQL/JSON: support the IS JSON predicate
This patch introduces 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 IS and IS NOT variants and supports a WITH
UNIQUE KEYS flag. The tests are:
IS JSON [VALUE]
IS JSON ARRAY
IS JSON OBJECT
IS JSON SCALAR
These should be self-explanatory.
The WITH UNIQUE KEYS flag makes these return false when duplicate keys
exist in any object within the value, not necessarily directly contained
in the outermost object.
Author: Nikita Glukhov <n.gluhov@postgrespro.ru>
Author: Teodor Sigaev <teodor@sigaev.ru>
Author: Oleg Bartunov <obartunov@gmail.com>
Author: Alexander Korotkov <aekorotkov@gmail.com>
Author: Amit Langote <amitlangote09@gmail.com>
Author: Andrew Dunstan <andrew@dunslane.net>
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/CAF4Au4w2x-5LTnN_bxky-mq4=WOqsGsxSpENCzHRAzSnEd8+WQ@mail.gmail.com
Discussion: https://postgr.es/m/cd0bb935-0158-78a7-08b5-904886deac4b@postgrespro.ru
Discussion: https://postgr.es/m/20220616233130.rparivafipt6doj3@alap3.anarazel.de
Discussion: https://postgr.es/m/abd9b83b-aa66-f230-3d6d-734817f0995d%40postgresql.org
Diffstat (limited to 'src/include/utils/jsonfuncs.h')
| -rw-r--r-- | src/include/utils/jsonfuncs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/utils/jsonfuncs.h b/src/include/utils/jsonfuncs.h index fc610f65031..a85203d4a4b 100644 --- a/src/include/utils/jsonfuncs.h +++ b/src/include/utils/jsonfuncs.h @@ -50,6 +50,9 @@ extern bool pg_parse_json_or_errsave(JsonLexContext *lex, JsonSemAction *sem, extern void json_errsave_error(JsonParseErrorType error, JsonLexContext *lex, struct Node *escontext); +/* get first JSON token */ +extern JsonTokenType json_get_first_token(text *json, bool throw_error); + extern uint32 parse_jsonb_index_flags(Jsonb *jb); extern void iterate_jsonb_values(Jsonb *jb, uint32 flags, void *state, JsonIterateStringValuesAction action); |