Re: unnest

I assume this is not something for our PostgreSQL CVS, even the later
SRF implementation.

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

John Hansen wrote:
> Attached, array -> rows iterator.
>
> select * from unnest(array[1,2,3,4,5]);
>
> Unnest
> ---------------
> 1
> 2
> 3
> 4
> 5
> 5 rows
>
> The switch statement could probably be done in a different way, but
> there doesn't seem to be any good examples of how to return anyitem. If
> anyone have a better way, please let me know.
>
> Does anyone know how to check individual array elements for NULL values?
> PG_ARG_ISNULL() seems to return true if ANY array element is null; ex::
> array[1,2,3,null,4,5]
>
> Comments / improvements welcome.
>
> Kind regards,
>
> John
>

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Content-Description: unnest.c

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Content-Description: unnest.sql

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