Re: PostgreSQL sequence within function

I figured it out... the problem was calling nextval("seq") with double
quotes.
Normally, you would do "select nextval('seq')". From within a function,
calling nextval with single quotes around the argument, causes a syntax
error.
SOLUTION:
you need to use "backslash escape" sequences around the sequence argument...
example below....
-----------------------------------

CREATE FUNCTION sp_slide_create(int4) RETURNS int4 AS'
DECLARE

aScriptID ALIAS FOR $1;
seqID int4 := nextval(\'genseq\'); -- the magic is here

BEGIN

INSERT INTO tblslides (slideid) VALUES (seqID);

RETURN seqID;

END;'
LANGUAGE 'plpgsql' VOLATILE;

-----------------------------------

Maybe this is an obvious solution, but i really think there should be
something in the documentation about this (...pgsql-docs CC'ed)

Thanks
Clark Allan
On 7/5/05, Tony Caduto <tony_caduto(at)amsoftwaredesign(dot)com> wrote:
>
> Try this version of your function.
> I don't think you can assign a value to a variable in the declaration
> section with the return value of a function.
>
> CREATE OR REPLACE FUNCTION sp_slide_create(int4, bool, bool, bool,
> varchar, text, varchar, varchar, int4)
> RETURNS int4 AS'
> DECLARE
> aScriptID ALIAS FOR $1;
> aAllowDGP ALIAS FOR $2;
> aAllowDGO ALIAS FOR $3;
> aWaitForSlideFinish ALIAS FOR $4;
> aTitle ALIAS FOR $5;
> aText ALIAS FOR $6;
> aFlashFileDGP ALIAS FOR $7;
> aFlashFileDGO ALIAS FOR $8;
> aSlideType ALIAS FOR $9;
> seqID int4;
> BEGIN
> seqID = nextval("seqslideid");
> INSERT INTO tblslides
> (slideid, scriptID, allowdgp, allowdgo, waitforslidefinish, title,
> text, flashfiledgp, flashfiledgo, slidetype)
> VALUES
> (seqID, aScriptID, aAllowDGP, aAllowDGO, aWaitForSlideFinish, aTitle,
> aText, aFlashFileDGP, aFlashFileDGO, aSlideType);
>
> RETURN seqID;
> END;'
>
> LANGUAGE 'plpgsql' VOLATILE;
>
>
> Clark Allan wrote:
>
> > Thanks for the help Tony,
> > But im still having some trouble.
> >
>
>
>