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* Function declaration
@ 2005-04-19 00:28 A. Kulikov <a.kulikov@gmail.com>
0 siblings, 1 reply; 2+ messages in thread
From: A. Kulikov @ 2005-04-19 00:28 UTC (permalink / raw)
To: pgsql-sql
Is there a possiblity to declare functions with optional parameters
i.e. in case some parameters are not passed to the function, then some
kind of default value is assigned to the function?
regards,
alex
--
The mind is essential -- http://essentialmind.com/
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: Function declaration
@ 2005-04-19 01:20 Sean Davis <sdavis2@mail.nih.gov>
parent: A. Kulikov <a.kulikov@gmail.com>
0 siblings, 0 replies; 2+ messages in thread
From: Sean Davis @ 2005-04-19 01:20 UTC (permalink / raw)
To: A. Kulikov <a.kulikov@gmail.com>; +Cc: pgsql-sql
Alex,
What happens if you declare your function as:
function(text,text)
or whatever your datatypes for each argument are supposed to be and then,
within your function, test whether the arguments are NULL? I haven't tried
it, so I can't say for sure, but it seems like you should be able to pass a
SQL NULL as an argument.
Sean
----- Original Message -----
From: "A. Kulikov" <a.kulikov@gmail.com>
To: "Sean Davis" <sdavis2@mail.nih.gov>
Sent: Monday, April 18, 2005 8:44 PM
Subject: Re: [SQL] Function declaration
Unfortunately that is not what I am looking for =( Although the task I
have in mind can be accomplished using overloading. Is there no
equivalent in plpgsql for
function(foo,bar=null)...
??
regards,
alex
2005/4/19, Sean Davis <sdavis2@mail.nih.gov>:
> Alex,
>
> I think what you are looking for is called function overloading. See the
> documenation here:
>
> http://www.postgresql.org/docs/8.0/interactive/xfunc-overload.html
>
> Sean
>
> ----- Original Message -----
> From: "A. Kulikov" <a.kulikov@gmail.com>
> To: <pgsql-sql@postgresql.org>
> Sent: Monday, April 18, 2005 8:28 PM
> Subject: [SQL] Function declaration
>
> Is there a possiblity to declare functions with optional parameters
> i.e. in case some parameters are not passed to the function, then some
> kind of default value is assigned to the function?
>
>
--
The mind is essential -- http://essentialmind.com/
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2005-04-19 00:28 Function declaration A. Kulikov <a.kulikov@gmail.com>
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