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Re: SQL/JSON: functions

Erik Rijkers <er@xs4all.nl>

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From: Erik Rijkers <er@xs4all.nl>
To: Nikita Glukhov <n.gluhov@postgrespro.ru>
Cc: Pavel Stehule <pavel.stehule@gmail.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>, Alvaro Herrera <alvherre@2ndquadrant.com>, Thomas Munro <thomas.munro@gmail.com>, Andrew Alsup <bluesbreaker@gmail.com>, Andres Freund <andres@anarazel.de>, Dmitry Dolgov <9erthalion6@gmail.com>, Oleg Bartunov <obartunov@postgrespro.ru>, Alexander Korotkov <a.korotkov@postgrespro.ru>, Michael Paquier <michael@paquier.xyz>, Simon Riggs <simon@2ndquadrant.com>, Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
Date: 2020-03-03T01:48:24Z
Lists: pgsql-hackers 
On 2020-03-03 00:24, Nikita Glukhov wrote:
> On 03.03.2020 2:12, Erik Rijkers wrote:
> 
>> On 2020-03-02 23:33, Nikita Glukhov wrote:
>>> Attached 42th version of the patches.


20200302/0001-Jsonpath-support-for-json-v42.patch  +
20200302/0002-Add-common-SQL_JSON-clauses-v42.patch+
20200302/0003-Add-invisible-coercion-form-v42.patch+
20200302/0004-Add-function-formats-v42.patch       +
20200302/0005-SQLJSON-constructors-v42.patch       +
20200302/0006-IS-JSON-predicate-v42.patch          +
20200302/0007-SQLJSON-query-functions-v42.patch    +

Thanks -- those applied fine.


Compiling, I get this error from the pg_stat_statements module (in 
contrib):

-- [2020.03.03 02:22:20 json_functions/0] make contrib
pg_stat_statements.c: In function ‘JumbleExpr’:
pg_stat_statements.c:2933:29: error: ‘JsonExpr’ {aka ‘struct JsonExpr’} 
has no member named ‘raw_expr’
  2933 |     JumbleExpr(jstate, jexpr->raw_expr);
       |                             ^~
make[1]: *** [pg_stat_statements.o] Error 1
make: *** [all-pg_stat_statements-recurse] Error 2
-- contrib make returned 2 - abort
../../src/Makefile.global:919: recipe for target 'pg_stat_statements.o' 
failed
Makefile:93: recipe for target 'all-pg_stat_statements-recurse' failed
pg_stat_statements.c: In function ‘JumbleExpr’:
pg_stat_statements.c:2933:29: error: ‘JsonExpr’ {aka ‘struct JsonExpr’} 
has no member named ‘raw_expr’
  2933 |     JumbleExpr(jstate, jexpr->raw_expr);
       |                             ^~
make[1]: *** [pg_stat_statements.o] Error 1
make: *** [install-pg_stat_statements-recurse] Error 2
-- contrib make install returned 2 - abort


(so I've edited out pg_stat_statements from the contrib/Makefile and 
compiled a working server for further testing.)


Thanks,

Erik Rijkers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. JSON_TABLE: Add support for NESTED paths and columns

  2. Add basic JSON_TABLE() functionality

  3. Add SQL/JSON query functions

  4. Add soft error handling to some expression nodes

  5. Adjust populate_record_field() to handle errors softly

  6. Refactor code used by jsonpath executor to fetch variables

  7. Add more SQL/JSON constructor functions

  8. SQL/JSON: support the IS JSON predicate

  9. SQL/JSON: add standard JSON constructor functions

  10. Improve readability of SQL/JSON documentation.

  11. Documentation for SQL/JSON features

  12. RETURNING clause for JSON() and JSON_SCALAR()

  13. SQL JSON functions

  14. SQL/JSON query functions

  15. IS JSON predicate

  16. SQL/JSON constructors

  17. Common SQL/JSON clauses

  18. Doc: remove obsolete entries in table of BRIN strategy numbers.

  19. Doc: standardize markup a bit more.

  20. Make pg_regress.c unset PGDATABASE during make installcheck.

  21. Fix handling of GENERATED columns in CREATE TABLE LIKE INCLUDING DEFAULTS.