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| author | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2023-03-29 12:11:36 +0200 |
|---|---|---|
| committer | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2023-03-29 12:11:36 +0200 |
| commit | 7081ac46ace8c459966174400b53418683c9fe5c (patch) | |
| tree | 52590ea33eb07a2d7acf4a1461101932c3c88757 /src/backend/parser/parser.c | |
| parent | 38b7437b9088b4859e4489a1a1a9ab7066f5b320 (diff) | |
| download | postgresql-7081ac46ace8c459966174400b53418683c9fe5c.tar.gz postgresql-7081ac46ace8c459966174400b53418683c9fe5c.zip | |
SQL/JSON: add standard JSON constructor functions
This commit introduces the SQL/JSON standard-conforming constructors for
JSON types:
JSON_ARRAY()
JSON_ARRAYAGG()
JSON_OBJECT()
JSON_OBJECTAGG()
Most of the functionality was already present in PostgreSQL-specific
functions, but these include some new functionality such as the ability
to skip or include NULL values, and to allow duplicate keys or throw
error when they are found, as well as the standard specified syntax to
specify output type and format.
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>
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/backend/parser/parser.c')
| -rw-r--r-- | src/backend/parser/parser.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/backend/parser/parser.c b/src/backend/parser/parser.c index aa4dce6ee9c..65eb0876575 100644 --- a/src/backend/parser/parser.c +++ b/src/backend/parser/parser.c @@ -137,6 +137,9 @@ base_yylex(YYSTYPE *lvalp, YYLTYPE *llocp, core_yyscan_t yyscanner) */ switch (cur_token) { + case FORMAT: + cur_token_length = 6; + break; case NOT: cur_token_length = 3; break; @@ -150,6 +153,9 @@ base_yylex(YYSTYPE *lvalp, YYLTYPE *llocp, core_yyscan_t yyscanner) case USCONST: cur_token_length = strlen(yyextra->core_yy_extra.scanbuf + *llocp); break; + case WITHOUT: + cur_token_length = 7; + break; default: return cur_token; } @@ -188,6 +194,16 @@ base_yylex(YYSTYPE *lvalp, YYLTYPE *llocp, core_yyscan_t yyscanner) /* Replace cur_token if needed, based on lookahead */ switch (cur_token) { + case FORMAT: + /* Replace FORMAT by FORMAT_LA if it's followed by JSON */ + switch (next_token) + { + case JSON: + cur_token = FORMAT_LA; + break; + } + break; + case NOT: /* Replace NOT by NOT_LA if it's followed by BETWEEN, IN, etc */ switch (next_token) @@ -224,6 +240,16 @@ base_yylex(YYSTYPE *lvalp, YYLTYPE *llocp, core_yyscan_t yyscanner) } break; + case WITHOUT: + /* Replace WITHOUT by WITHOUT_LA if it's followed by UNIQUE */ + switch (next_token) + { + case UNIQUE: + cur_token = WITHOUT_LA; + break; + } + break; + case UIDENT: case USCONST: /* Look ahead for UESCAPE */ |