I'm trying to write a PostgreSQL extension to estimate the number of
rows returned by a SELECT statement. Ideally, it'd be invoked along
the lines of "SELECT estimate_row_count('SELECT foo FROM bar INNER
JOIN baz ON (id) WHERE a=b');", and would be useful for estimating
the number of pages
Markus Bertheau =?UTF-8?Q?=E2=98=AD?= <[EMAIL PROTECTED]> writes:
> I have a function find() that returns a SETOF INT. I further have a
> function decorate as follows:
> CREATE TYPE decorate_type AS (id INT, name TEXT, author TEXT,
> last_change TIMESTAMP);
> CREATE FUNCTION decorate(INT)
>
On Mon, May 30, 2005 at 05:15:55PM +0200, Markus Bertheau ??? wrote:
>
> Now how would a query look like that involves find() and decorate() and
> returns
>
> id | name | author | last_change
>
> 4 | egg | john | 2003-05-05
> 5 | ham | dave | 2004-03-01
E
Hi,
I have a function find() that returns a SETOF INT. I further have a
function decorate as follows:
CREATE TYPE decorate_type AS (id INT, name TEXT, author TEXT,
last_change TIMESTAMP);
CREATE FUNCTION decorate(INT)
RETURNS decorate_type
STABLE
LANGUAGE 'plpgsql'
Thanks.
Since I was just interested in this special case (while the general wasn't
interesting, either) this helped me. Also psql -E is a nice new feature to
me.
|-Original Message-
|From: Michael Fuhr [mailto:[EMAIL PROTECTED]
|Sent: Montag, 30. Mai 2005 16:09
|To: KÖPFERL Robert
|Cc: pgs
On Mon, May 30, 2005 at 03:42:49PM +0200, KÖPFERL Robert wrote:
>
> As I found out, pg_proc relation provides me with data about defined stored
> procedures. Togehter with other relations as pg_type I can retrieve readable
> information, like:
> select proname, pd.description FROM pg_proc pp left
Hi,
I'm currently on retrieving meta infromation about db-schemas.
As I found out, pg_proc relation provides me with data about defined stored
procedures. Togehter with other relations as pg_type I can retrieve readable
information, like:
select proname, pd.description FROM pg_proc pp left outer
