Horton

Re: PG 15 (and to a smaller degree 14) regression due to ExprEvalStep size

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Amit Langote <amitlangote09@gmail.com>
Cc: Andrew Dunstan <andrew@dunslane.net>, Michael Paquier <michael@paquier.xyz>, John Naylor <john.naylor@enterprisedb.com>, "Jonathan S. Katz" <jkatz@postgresql.org>, Tom Lane <tgl@sss.pgh.pa.us>, David Rowley <dgrowleyml@gmail.com>, Peter Geoghegan <pg@bowt.ie>, PostgreSQL-development <pgsql-hackers@postgresql.org>, Nikita Glukhov <n.gluhov@postgrespro.ru>
Date: 2022-07-19T15:37:03Z
Lists: pgsql-hackers 
Hi,

On 2022-07-19 20:40:11 +0900, Amit Langote wrote:
> About that, I was wondering if the blocks in llvm_compile_expr() need
> to be hand-coded to match what's added in ExecInterpExpr() or if I've
> missed some tool that can be used instead?

The easiest way is to just call an external function for the implementation of
the step. But yes, otherwise you need to handcraft it.

Greetings,

Andres Freund

Commits

  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. Add static assertion ensuring sizeof(ExprEvalStep) <= 64 bytes

  11. Remove size increase in ExprEvalStep caused by hashed saops

  12. pgstat: reduce timer overhead by leaving timer running.

  13. expression eval: Fix EEOP_JSON_CONSTRUCTOR and EEOP_JSONEXPR size.

  14. SQL/JSON query functions

  15. Speedup ScalarArrayOpExpr evaluation