Horton

Re: remaining sql/json patches

amit <amitlangote09@gmail.com>

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From: Amit Langote <amitlangote09@gmail.com>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Andrew Dunstan <andrew@dunslane.net>, jian he <jian.universality@gmail.com>, Erik Rijkers <er@xs4all.nl>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2023-09-29T04:57:46Z
Lists: pgsql-hackers

Commits

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

  1. SQL/JSON: Various improvements to SQL/JSON query function docs

  2. SQL/JSON: Fix some obsolete comments.

  3. SQL/JSON: Fix issues with DEFAULT .. ON ERROR / EMPTY

  4. JSON_TABLE: Add support for NESTED paths and columns

  5. Fix JsonExpr deparsing to emit QUOTES and WRAPPER correctly

  6. Fix typo introduced in 6185c9737

  7. Add basic JSON_TABLE() functionality

  8. Avoid splitting errmsg string to span multiple lines

  9. Add SQL/JSON query functions

  10. Implement various jsonpath methods

  11. Add soft error handling to some expression nodes

  12. Adjust populate_record_field() to handle errors softly

  13. Refactor code used by jsonpath executor to fetch variables

  14. Test EXPLAIN (FORMAT JSON) ... XMLTABLE

  15. Simplify productions for FORMAT JSON [ ENCODING name ]

  16. Add trailing commas to enum definitions

  17. doc: add missing <returnvalue> and whitespace

  18. Add more SQL/JSON constructor functions

  19. Rename a nonterminal used in SQL/JSON grammar

  20. Some refactoring to export json(b) conversion functions

  21. Don't include CaseTestExpr in JsonValueExpr.formatted_expr

  22. Code review for commit b6e1157e7d

  23. Pass constructName to transformJsonValueExpr()

  24. Unify JSON categorize type API and export for external use

  25. Make some indentation in gram.y consistent

  26. Allow most keywords to be used as column labels without requiring AS.

  27. Reduce size of backend scanner's tables.

  28. Use perfect hashing, instead of binary search, for keyword lookup.

Attachments

On Thu, Sep 28, 2023 at 8:04 PM Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
> On 2023-Sep-27, Amit Langote wrote:
> > Maybe the following is better:
> >
> > +   /*
> > +    * For expression nodes that support soft errors.  Should be set to NULL
> > +    * before calling ExecInitExprRec() if the caller wants errors thrown.
> > +    */
> >
> > ...as in the attached.
>
> That's good.
>
> > Alvaro, do you think your concern regarding escontext not being in the
> > right spot in the ExprState struct is addressed?  It doesn't seem very
> > critical to me to place it in the struct's 1st cacheline, because
> > escontext is not accessed in performance critical paths such as during
> > expression evaluation, especially with the latest version.  (It would
> > get accessed during evaluation with previous versions.)
> >
> > If so, I'd like to move ahead with committing it.
>
> Yeah, looks OK to me in v21.

Thanks.  I will push the attached 0001 shortly.

Also, I've updated 0002's commit message to mention why it only
changes the functions local to jsonfuncs.c to add the Node *escontext
parameter, but not any external ones that may be invoked, such as,
makeMdArrayResult().  The assumption behind that is that jsonfuncs.c
functions validate any data that they pass to such external functions,
so no *suppressible* errors should occur.

-- 
Thanks, Amit Langote
EDB: http://www.enterprisedb.com