diff options
| author | Andrew Dunstan <andrew@dunslane.net> | 2022-03-03 13:11:14 -0500 |
|---|---|---|
| committer | Andrew Dunstan <andrew@dunslane.net> | 2022-03-29 16:57:13 -0400 |
| commit | 1a36bc9dba8eae90963a586d37b6457b32b2fed4 (patch) | |
| tree | eeb155046082dda9284bd8c298874d802bcc37cb /src/include/utils/formatting.h | |
| parent | 3d067c53b26dfeb95da0d75a65614b4d7b45c317 (diff) | |
| download | postgresql-1a36bc9dba8eae90963a586d37b6457b32b2fed4.tar.gz postgresql-1a36bc9dba8eae90963a586d37b6457b32b2fed4.zip | |
SQL/JSON query functions
This introduces the SQL/JSON functions for querying JSON data using
jsonpath expressions. The functions are:
JSON_EXISTS()
JSON_QUERY()
JSON_VALUE()
All of these functions only operate on jsonb. The workaround for now is
to cast the argument to jsonb.
JSON_EXISTS() tests if the jsonpath expression applied to the jsonb
value yields any values. JSON_VALUE() must return a single value, and an
error occurs if it tries to return multiple values. JSON_QUERY() must
return a json object or array, and there are various WRAPPER options for
handling scalar or multi-value results. Both these functions have
options for handling EMPTY and ERROR conditions.
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/formatting.h')
| -rw-r--r-- | src/include/utils/formatting.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/include/utils/formatting.h b/src/include/utils/formatting.h index 851e787bfdb..0a22af80a21 100644 --- a/src/include/utils/formatting.h +++ b/src/include/utils/formatting.h @@ -17,6 +17,9 @@ #ifndef _FORMATTING_H_ #define _FORMATTING_H_ +#define DCH_DATED 0x01 +#define DCH_TIMED 0x02 +#define DCH_ZONED 0x04 extern char *str_tolower(const char *buff, size_t nbytes, Oid collid); extern char *str_toupper(const char *buff, size_t nbytes, Oid collid); @@ -29,5 +32,6 @@ extern char *asc_initcap(const char *buff, size_t nbytes); extern Datum parse_datetime(text *date_txt, text *fmt, Oid collid, bool strict, Oid *typid, int32 *typmod, int *tz, bool *have_error); +extern int datetime_format_flags(const char *fmt_str, bool *have_error); #endif |