View Full Version : Why do I get no results?
| This is a literal cut and past from the docs
-- Set up and use a cursor:
BEGIN WORK;
DECLARE liahona CURSOR FOR SELECT * FROM films;
-- Fetch first 5 rows in the cursor liahona:
FETCH FORWARD 5 IN liahona;
-- Fetch previous row:
FETCH BACKWARD 1 IN liahona;
-- close the cursor and commit work:
CLOSE liahona;
COMMIT WORK;
It says that it runs ok but how do I view the results?
Thanks
Dave |
This cannot be.
I have tested this.
Do you have a table named films?
Are there rows in it?
I was testing this on 7.2.1 in RH7.2
| Originally posted by eperich
This cannot be.
I have tested this.
Do you have a table named films?
Are there rows in it?
I was testing this on 7.2.1 in RH7.2
The table is users ( I forgot to edit this post ) and yes there are 9 records. |
Is there a script that executes this statemtns or do you type it manuallly in psql?
I am running it through pgadmin II SQL query screen. I will try it from the command prompt.
Thanks
Dave
EDIT: Ok it works fine at the psql level.
So now my question is how do I return that recordsetup to the calling application level?
What do you want exactly?
begin work;
declare cursor ...
FETCH FORWARD 5 cursor;
commit;
get the rows of the fetch?
Originally posted by eperich
What do you want exactly?
begin work;
declare cursor ...
FETCH FORWARD 5 cursor;
commit;
get the rows of the fetch?
Yes. Ideally I would like to contain the entire thing in a function and return a pointer to a cursor that contains the recordset but failing that yes that is exactly what I want to do.
I don't know how you can achieve this but I think only way is that this fetch is the same as a select and you can get the data in the same way as you can get it from select.
I'm no ASP and ODBC guru so I can't test this theory
:D
ok so at the psql level how do I make this a function and return only the cursor object.
The crux of the problem is a limited amount of data that ODBC will pass ( 2K I think ) and my queries would exceed that.
Thanks again.
Dave
now I understand you want to return the referenc of the cursor from the function
Sorry. I don't know if this is possible.
The only chance you have is to post an entry in the pgsql-sql list.
Josh Berkus may know this. I think he is the pl/pgsql expert
Originally posted by eperich
now I understand you want to return the referenc of the cursor from the function
Sorry. I don't know if this is possible.
The only chance you have is to post an entry in the pgsql-sql list.
Josh Berkus may know this. I think he is the pl/pgsql expert
Ok. great thank you for all your help.
One last question :)
Where do I find the pgsql-sql list? I have been all over the web and postgresql documentation is all over the place but mostly redundant. So just to avoid me finding 3000 identical locations calling themselves a pgsql-sql list could you give me a primary url to register and post at.
Thanks again.
Dave
usenet below :D
comp.databases.postgresql.sql
or the mailing list
Lists near the bottom of the page (http://www.de.postgresql.org/users-lounge/index.html)
vBulletin v3.5.3, Copyright ©2000-2008, Jelsoft Enterprises Ltd.