Horton

Re: [PATCH] Generic type subscripting

Peter Eisentraut <peter.eisentraut@2ndquadrant.com>

View thread View on postgr.es
From: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
To: Arthur Zakirov <a.zakirov@postgrespro.ru>, Dmitry Dolgov <9erthalion6@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, David Steele <david@pgmasters.net>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2017-09-20T01:01:57Z
Lists: pgsql-hackers 
On 9/18/17 05:39, Arthur Zakirov wrote:
> On Mon, Sep 18, 2017 at 10:31:54AM +0200, Dmitry Dolgov wrote:
>> Just to clarify, do you mean that `CREATE SUBSCRIPTING FOR` would only make
>> a
>> dependency record? In this case `DROP SUBSCRIPTING FOR` actually means just
>> drop an init function.
> I think it would be good to add new catalog table.

Would you mind posting a summary of how you go here?

Superficially, it seems like this sort of feature should be handled by a
couple of type attributes and pg_type columns.  But you are talking
about a new system catalog and new DDL, and it's not clear to me how you
got here.

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

Commits

  1. Throw error when assigning jsonb scalar instead of a composite object

  2. Filling array gaps during jsonb subscripting

  3. Implementation of subscripting for jsonb

  4. Allow ALTER TYPE to update an existing type's typsubscript value.

  5. Allow subscripting of hstore values.

  6. Support subscripting of arbitrary types, not only arrays.

  7. jit: Reference function pointer types via llvmjit_types.c.

  8. Teach contain_leaked_vars that assignment SubscriptingRefs are leaky.

  9. jit: Correct parameter type for generated expression evaluation functions.

  10. Renaming for new subscripting mechanism

  11. Fix assertion failure for SSL connections.

  12. Teach eval_const_expressions() to handle some more cases.