Re: RFP: Recursive query in 8.4

From: ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>
To: Tatsuo Ishii <ishii(at)postgresql(dot)org>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: RFP: Recursive query in 8.4
Date: 2008-02-22 05:42:46
Message-ID: 20080222143700.8B76.52131E4D@oss.ntt.co.jp
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Tatsuo Ishii <ishii(at)postgresql(dot)org> wrote:

> 5. Limitation with PostgreSQL
>
> 1) we do not implement SEARCH clause and CYCLE clause. This is because
> we need array of rows to implement them. Note that there's no
> support for array of rows in PostgreSQL.

What is difference between "array of rows" and
Arrays of composite types, that is new feature in 8.3 ?

=# CREATE TABLE foo (i integer);
CREATE TABLE
=# CREATE TABLE bar (foos foo[]); -- *here*
CREATE TABLE

Regards,
---
ITAGAKI Takahiro
NTT Open Source Software Center

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