Re: which view is used another views

Hello,

How can I determine the views which are using a certain view.

Thanks in advance

On 24 March 2011 18:06, salah jubeh <s_jubeh(at)yahoo(dot)com> wrote:

> Hello,
>
> How can I determine the views which are using a certain view.
>
>

Name of the view can be searched on the "view_definition" column of the
"views" view of the information schema.

On 24/03/2011 16:06, salah jubeh wrote:
> Hello,
>
> How can I determine the views which are using a certain view.

If you're using pgAdmin, there's a "Dependants" tab which shows you the
objects depending on another object.

Otherwise, I think you can query the pg_catalog.pg_depend table, but I
don't know how you go about that.

Ray.

--
Raymond O'Donnell :: Galway :: Ireland
rod(at)iol(dot)ie

Thanks guys

pg_depend seems Useful, I will check the manual.

Regards

________________________________
From: Raymond O'Donnell <rod(at)iol(dot)ie>
To: salah jubeh <s_jubeh(at)yahoo(dot)com>
Cc: pgsql <pgsql-general(at)postgresql(dot)org>
Sent: Thu, March 24, 2011 6:18:16 PM
Subject: Re: [GENERAL] which view is used another views

On 24/03/2011 16:06, salah jubeh wrote:
> Hello,
>
> How can I determine the views which are using a certain view.

If you're using pgAdmin, there's a "Dependants" tab which shows you the objects
depending on another object.

Otherwise, I think you can query the pg_catalog.pg_depend table, but I don't
know how you go about that.

Ray.

-- Raymond O'Donnell :: Galway :: Ireland
rod(at)iol(dot)ie

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To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general

Hello Guys

The query in this function returns the dependency for level one. However, I need
the dependency for all level. I am still new with plpgsql so; how can I use
recursive function to return all dependency for all levels

CREATE OR REPLACE FUNCTION dependon (var text) RETURNS SETOF text AS
$BODY$
DECLARE
node record;
BEGIN

FOR node IN SELECT relname FROM pg_class WHERE OID in (
SELECT ev_class FROM pg_rewrite, pg_depend
WHERE pg_depend.objid = pg_rewrite.oid
AND deptype ='n'
AND refobjsubid = 1
AND refobjid::regclass::text = $1)
LOOP
IF node.relname IS NOT NULL THEN

RETURN NEXT depend(node.relname);
RETURN NEXT node.relname;

END IF;

END LOOP;
END
$BODY$
LANGUAGE 'plpgsql';

Regards

________________________________
From: Raymond O'Donnell <rod(at)iol(dot)ie>
To: salah jubeh <s_jubeh(at)yahoo(dot)com>
Cc: pgsql <pgsql-general(at)postgresql(dot)org>
Sent: Thu, March 24, 2011 6:18:16 PM
Subject: Re: [GENERAL] which view is used another views

On 24/03/2011 16:06, salah jubeh wrote:
> Hello,
>
> How can I determine the views which are using a certain view.

If you're using pgAdmin, there's a "Dependants" tab which shows you the objects
depending on another object.

Otherwise, I think you can query the pg_catalog.pg_depend table, but I don't
know how you go about that.

Ray.

-- Raymond O'Donnell :: Galway :: Ireland
rod(at)iol(dot)ie

-- Sent via pgsql-general mailing list (pgsql-general(at)postgresql(dot)org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general

On 25 March 2011 19:13, salah jubeh <s_jubeh(at)yahoo(dot)com> wrote:

> Hello Guys
>
> The query in this function returns the dependency for level one. However, I
> need the dependency for all level. I am still new with plpgsql so; how can I
> use recursive function to return all dependency for all levels
>
> CREATE OR REPLACE FUNCTION dependon (var text) RETURNS SETOF text AS
> $BODY$
> DECLARE
> node record;
> BEGIN
>
> FOR node IN SELECT relname FROM pg_class WHERE OID in (
> SELECT ev_class FROM pg_rewrite, pg_depend
> WHERE pg_depend.objid = pg_rewrite.oid
> AND deptype ='n'
> AND refobjsubid = 1
> AND refobjid::regclass::text = $1)
> LOOP
> IF node.relname IS NOT NULL THEN
>
> RETURN NEXT depend(node.relname);
> RETURN NEXT node.relname;
>
> END IF;
>
> END LOOP;
> END
> $BODY$
> LANGUAGE 'plpgsql';
>
>
You can do it with "WITH RECURSIVE" without PL/pgSQL:

http://www.postgresql.org/docs/current/static/queries-with.html

I am using postgresql 8.3

Best Regard

Eng. Salah Al Jubeh

PalestinePolytechnic University
College of Applied Science
Computer Science
P.O. Box 198

Mobile:++97259369122
Tel:++97222254680

________________________________
From: Emre Hasegeli <hasegeli(at)tart(dot)com(dot)tr>
To: salah jubeh <s_jubeh(at)yahoo(dot)com>
Cc: pgsql <pgsql-general(at)postgresql(dot)org>
Sent: Fri, March 25, 2011 6:25:13 PM
Subject: Re: [GENERAL] which view is used another views

On 25 March 2011 19:13, salah jubeh <s_jubeh(at)yahoo(dot)com> wrote:

Hello Guys
>
>The query in this function returns the dependency for level one. However, I need
>the dependency for all level. I am still new with plpgsql so; how can I use
>recursive function to return all dependency for all levels
>
>
>
>CREATE OR REPLACE FUNCTION dependon (var text) RETURNS SETOF text AS
>$BODY$
>DECLARE
> node record;
>BEGIN
>
> FOR node IN SELECT relname FROM pg_class WHERE OID in (
> SELECT ev_class FROM pg_rewrite, pg_depend
> WHERE pg_depend.objid = pg_rewrite.oid
> AND deptype ='n'
> AND refobjsubid = 1
> AND refobjid::regclass::text = $1)
> LOOP
> IF node.relname IS NOT NULL THEN
>
> RETURN NEXT depend(node.relname);
> RETURN NEXT node.relname;
>
> END IF;
>
> END LOOP;
>END
>$BODY$
>LANGUAGE 'plpgsql';
>
>

You can do it with "WITH RECURSIVE" without PL/pgSQL:
http://www.postgresql.org/docs/current/static/queries-with.html