Re: GSoC 2017: Foreign Key Arrays

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Mark Rofail <markm(dot)rofail(at)gmail(dot)com>
Cc: Alexander Korotkov <aekorotkov(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, David Steele <david(at)pgmasters(dot)net>, Stephen Frost <sfrost(at)snowman(dot)net>
Subject: Re: GSoC 2017: Foreign Key Arrays
Date: 2017-06-19 22:19:16
Message-ID: 20170619221916.idtty7tiihai65f7@alvherre.pgsql
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Mark Rofail wrote:
> Okay, so major breakthrough.
>
> *Updates:*
>
> - The operator @>(anyarray, anyelement) is now functional
> - The segmentation fault was due to applying PG_FREE_IF_COPY on a
> datum when it should only be applied on TOASTed inputs
> - The only problem now is if for example you apply the operator as
> follows '{AAAAAAAAAA646'}' @> 'AAAAAAAAAA646' it maps to @>(anyarray,
> anyarray) since 'AAAAAAAAAA646' is interpreted as char[] instead of Text
> - Added some regression tests (src/test/regress/sql/arrays.sql) and
> their results(src/test/regress/expected/arrays.out)
> - wokred on the new GIN strategy, I don't think it would vary much from
> GinContainsStrategy.

OK, that's great.

> *What I plan to do:*
>
> - I need to start working on the Referential Integrity code but I don't
> where to start

You need to study the old patch posted by Marco Nenciarini.

--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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