Thank you Merlin for your answer,
I tried that and is working as you said.
But when I do
other_array=some_array[1:2];
I'm getting the entire
'{{samba,sarath,sreenivas},{samba,mukhesh,pavan}}';
not just the second subarray, i.e. '{{samba,mukhesh,pavan}}'.
Is there any way I can get only the corresponding slice of the array?
otherwise I need to call this function multiple times from my java
client, once per each sub-array which I think will more expensive
that doing it in just one stored procedure call.
Regards,
Samba
On Thu, Dec 2, 2010 at 2:04 AM, Merlin Moncure <[email protected]> wrote:
> On Wed, Dec 1, 2010 at 10:51 AM, Samba <[email protected]> wrote:
> > Hi all,
> >
> > I'm trying to loop over a multidimensional array and find if any of the
> > elements in a sub-dimensional array are matching some known criteria but
> > facing issue with NULL for the sub arrays.
> >
> > I have a data structure that looks like:
> >
> > some_array VARCHAR[][] :=
> > '{{samba,sarath,sreenivas},{samba,mukhesh,pavan}}';
> >
> > I'm trying to assign the individual sub arrays to other array elements
> like:
> >
> > other-array VARCHAR[];
> >
> > other_array=some_array[1];
> >
> > and I'm expecting to get '{samba,sarath,sreenivas}' for index 1 and
> > {samba,mukhesh,pavan} for index 2;
> > however, I'm getting NULL.
> >
> > Can some one explain the way I can assign subarrays to other array
> elements
> > plpgsql?
>
> There is no truly effective way to do that. you can however slice the
> array which is almost as good:
> other_array=some_array[1:1];
> note this will give {{samba,sarath,sreenivas}}, not
> {samba,sarath,sreenivas}
>
> merlin
>
