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| author | Andrew Dunstan <andrew@dunslane.net> | 2022-03-03 13:02:53 -0500 |
|---|---|---|
| committer | Andrew Dunstan <andrew@dunslane.net> | 2022-03-28 15:37:08 -0400 |
| commit | 33a377608fc29cdd1f6b63be561eab0aee5c81f0 (patch) | |
| tree | 47abccafdaeae1c4466c917bbd85912f39558360 /src/include/utils/json.h | |
| parent | 6198420ad8a72e37f4fe4964616b17e0fd33b808 (diff) | |
| download | postgresql-33a377608fc29cdd1f6b63be561eab0aee5c81f0.tar.gz postgresql-33a377608fc29cdd1f6b63be561eab0aee5c81f0.zip | |
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
Diffstat (limited to 'src/include/utils/json.h')
| -rw-r--r-- | src/include/utils/json.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/utils/json.h b/src/include/utils/json.h index 63d83b815fb..bfe5b215912 100644 --- a/src/include/utils/json.h +++ b/src/include/utils/json.h @@ -26,5 +26,6 @@ extern Datum json_build_object_worker(int nargs, Datum *args, bool *nulls, bool unique_keys); extern Datum json_build_array_worker(int nargs, Datum *args, bool *nulls, Oid *types, bool absent_on_null); +extern bool json_validate(text *json, bool check_unique_keys); #endif /* JSON_H */ |