Re: How to do? - Mailing list pgsql-general

From Robert Partyka
Subject Re: How to do?
Date
Msg-id 5.1.0.14.0.20030805135617.00a32ec0@mail.alpha.pl
Whole thread Raw
In response to Re: How to do?  (Ron Johnson <ron.l.johnson@cox.net>)
Responses Re: How to do?  (Ron Johnson <ron.l.johnson@cox.net>)
List pgsql-general
At 16:14 03-08-02 -0500, you wrote:
>On Fri, 2003-08-01 at 11:44, Robert Partyka wrote:
> > Ron Johnson wrote:
> >  > No, but slightly ambiguous, at least for my old brain.
> > I will try to by more unequivocal this time :)
>
>So you want to pass query result sets between connections, so that
>each subsequent connection can query the previous connection's
>results?

Rather i select result on one connection and pass identification
information of one field to next connection.

> > Shridhar Daithankar wrote:
> >  > select oid,name from a;
> > I know it, but i have to have not oid's but row numbers :) such like :
> >      table "test"
> >     offset  |   value
> > -----------+------------
> > 1          |    AC43
> > 2          |    AC4X
> > 3          |    AX43
> > 4          |    ACX3
> > ....
> > n          |    XC4A
> >
> > the best will be without using sequence :)
> >
> > Shridhar Daithankar wrote:
> >  > I didn't get that.. could you please elaborate?
> >
> > Franco Bruno Borghesi wrote:
> >  > And about the rows before and after that you ask, I don't understand...
> > based on what you mean
> >  > *before* and *after*? you don't have an order by clause.
> >
> >  > And what do you mean with "I know that in result is record with e.g.
> > uid='AC13A1'"?
> >  > You know this uid *before* sending the query? is it part of your <where
> > statement>? can you use
> >  > this value as a hard coded condition for a subquery?
> >
> > Ok, so its goes something like that:
> >
> > lets say i have select query: select a,b,uid from foo where c='bar'
> order by a;
> >
> > with results like that:
> >   a  | b  | uid
> > ----+----+------
> > 2   |x   | AC01
> > 2   |w   | AC43
> > 4   |d   | AC88
> > 4   |a   | AC13
> > ...
> > 7   |c   | AC22
> >
> >
> > and lets say I selected this before and I know that there is uid='AC88';
> >
> > and in another connection (in lets say next requested www php script )
> > without selecting all
> > this data or even full list of only uid`s and making sequence scan row by
> > row I wont to get
> > something like that from select I have write above:
> >
> >   a  | b  | uid
> > ----+----+------
> > 2   |w   | AC43
> > 4   |d   | AC88
> > 4   |a   | AC13
> > (3 rows)
> >
> > if there is row before and row next of uid='AC88' or
> >
> >   a  | b  | uid
> > ----+----+------
> > 2   |w   | AC43
> > 4   |d   | AC88
> > (2 rows)
> > if uid='AC88' is last one row
> >
> > or
> >
> >   a  | b  | uid
> > ----+----+------
> > 4   |d   | AC88
> > 4   |a   | AC13
> > (2 rows)
> > if uid='AC88' is first row
> >
> > I hope its more understandable than before :)
> >
> > regards
> > Robert 'BoBsoN' Partyka
>
>--
>+-----------------------------------------------------------------+
>| Ron Johnson, Jr.        Home: ron.l.johnson@cox.net             |
>| Jefferson, LA  USA                                              |
>|                                                                 |
>| "I'm not a vegetarian because I love animals, I'm a vegetarian  |
>|  because I hate vegetables!"                                    |
>|    unknown                                                      |
>+-----------------------------------------------------------------+
>
>
>
>---------------------------(end of broadcast)---------------------------
>TIP 4: Don't 'kill -9' the postmaster


pgsql-general by date:

Previous
From: The Hermit Hacker
Date:
Subject: v7.4 Beta 1 Bundle Available for Testing ...
Next
From: "Knut P. Lehre"
Date:
Subject: Hardware Performance Tuning