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Date: Wed, 5 Jun 2024 21:07:52 +0200
From: Erik Wienhold <ewie@ewie.name>
To: Marcos Pegoraro <marcos@f10.com.br>
Cc: Postgres General <pgsql-general@postgresql.org>
Subject: Re: Length returns NULL ?
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On 2024-06-05 19:50 +0200, Marcos Pegoraro wrote:
> There are some functions called ...length, but only array_length returns
> NULL on empty array, why ?

Because the empty array has zero dimensions[1].  But now I'm wondering
why array_ndims returns NULL instead of zero for empty arrays.

[1] https://www.postgresql.org/message-id/603c8f070811061951u16034c3fk5dfaa493a6739a24%40mail.gmail.com

-- 
Erik