Re: How do I check for NULL

[David G. Johnston]

On Tue, Dec 9, 2025 at 10:14 AM Thiemo Kellner <thi...@gelassene-pferde.biz>
wrote:

> I feel, you meant to say, the subquery does not return any record which is
> not the same as returns NULL.
>

For a scalar subquery the final output of a zero-row query is the null
value.

David J.