Hierarchical query's

[Cláudia Morgado]

Hello!

Oracle has the option with the SQL CONECT BY statement to run through a hierarchical database with a single SQl-statement:

<!--SQL SELECT ms_id,ms_parent FROM messages CONNECT BY PRIOR ms_id = ms_parent START WITH ms_id = 1 -->

Result-set (example):

ms_id parent_id 1 1.1 1 1.1.1 1.1 1.1.2 1.1 1.1.3 1.1 1.2 1 1.2.1 1.2

etc
I need to do this in PostgreSql.

This is possible in the Postgre?
regards,
Cláudia Morgado and Carla Mello

[Greg Stark]

Cláudia Morgado <cl*************@widesoft.com.br> writes:

Oracle has the option with the SQL CONECT BY statement to run through a
hierarchical database with a single SQl-statement:

Not really.

There is a package in the contrib directory called tablefunc that has a
function called connect_by that can do some things like this. I have no
experience with it and don't know if it would meet your needs.

--
greg
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[Pavel Stehule]

Hello

PostgreSQL doesn't support h.q and I will not support this type of h.q.
Supported syntax will be like db2 - ANSI SQL 2kx. But you can try hier
patch - http://gppl.terminal.ru/readme.html.

This is a patch which allows PgSQL to perform hierarchical queries like
Oracle does.

Regards
Pavel Stehule
On Thu, 23 Oct 2003, [iso-8859-1] Cláudia Morgado wrote:

Hello!

Oracle has the option with the SQL CONECT BY statement to run through a hierarchical database with a single SQl-statement:

<!--SQL SELECT ms_id,ms_parent FROM messages CONNECT BY PRIOR ms_id = ms_parent START WITH ms_id = 1 -->

Result-set (example):

ms_id parent_id 1 1.1 1 1.1.1 1.1 1.1.2 1.1 1.1.3 1.1 1.2 1 1.2.1 1.2

etc
I need to do this in PostgreSql.

This is possible in the Postgre?
regards,
Cláudia Morgado and Carla Mello

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[Cláudia Morgado]

Thanks very much!

We will go to do the tests.

Regards,
Carla Mello and Cláudia Morgado
----- Original Message -----
From: "Pavel Stehule" <st*****@kix.fsv.cvut.cz>
To: "Cláudia Morgado" <cl*************@widesoft.com.br>
Cc: <pg***********@postgresql.org>; <cm*****@wide.com.br>
Sent: Friday, October 24, 2003 3:32 AM
Subject: Re: [GENERAL] Hierarchical query's

Hello

PostgreSQL doesn't support h.q and I will not support this type of h.q.
Supported syntax will be like db2 - ANSI SQL 2kx. But you can try hier
patch - http://gppl.terminal.ru/readme.html.

This is a patch which allows PgSQL to perform hierarchical queries like
Oracle does.

Regards
Pavel Stehule
On Thu, 23 Oct 2003, [iso-8859-1] Cláudia Morgado wrote:

Hello!

Oracle has the option with the SQL CONECT BY statement to run through a hierarchical database with a single SQl-statement:
<!--SQL SELECT ms_id,ms_parent FROM messages CONNECT BY PRIOR ms_id = ms_parent START WITH ms_id = 1 -->
Result-set (example):

ms_id parent_id 1 1.1 1 1.1.1 1.1 1.1.2 1.1 1.1.3 1.1 1.2 1 1.2.1 1.2

etc
I need to do this in PostgreSql.

This is possible in the Postgre?
regards,
Cláudia Morgado and Carla Mello

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