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
> 

Content-Description: Makefile

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Content-Description: unnest.c

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Content-Description: unnest.sql

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