Horton

Re: proposal: schema variables

Pavel Stehule <pavel.stehule@gmail.com>

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From: Pavel Stehule <pavel.stehule@gmail.com>
To: Serge Rielau <serge@rielau.com>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2017-11-01T05:56:03Z
Lists: pgsql-hackers, pgsql-performance

Commits

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

  1. Move WAL sequence code into its own file

  2. Add ExplainState argument to pg_plan_query() and planner().

  3. Don't include access/htup_details.h in executor/tuptable.h

  4. Refactor to avoid code duplication in transformPLAssignStmt.

  5. Avoid including commands/dbcommands.h in so many places

  6. Restrict psql meta-commands in plain-text dumps.

  7. Split func.sgml into more manageable pieces

  8. Fix squashing algorithm for query texts

  9. EXPLAIN: Always use two fractional digits for row counts.

  10. Preliminary refactoring of plpgsql expression construction.

  11. plpgsql: pure parser and reentrant scanner

  12. Add some sanity checks in executor for query ID reporting

  13. Fix misleading error message context

  14. Add macros for looping through a List without a ListCell.

2017-11-01 6:07 GMT+01:00 Serge Rielau <serge@rielau.com>:

> "Although the syntax of CREATE TEMPORARY TABLE resembles that of the SQL
> standard, the effect is not the same. In the standard, temporary tables are
> defined just once and automatically exist (starting with empty contents) in
> every session that needs them. PostgreSQL instead requires each session
> to issue its own CREATE TEMPORARY TABLE command for each temporary table
> to be used. This allows different sessions to use the same temporary table
> name for different purposes, whereas the standard's approach constrains all
> instances of a given temporary table name to have the same table structure.”
> Yeah, that’s a DECLAREd table in my book. No wonder we didn’t link up.
>

This is known discussion about local / global temp tables in PostgresSQL.
And ToDo point: implementation of global temp tables in Postgres.

This temporary behave is marginal part of proposal - so I can to remove it
from proposal - and later open discussion about CREATE TEMPORARY VARIABLE
versus DECLARE VARIABLE

Regards

Pavel

Serge

>