David Raymond, on Wednesday, November 13, 2019 10:34 AM, wrote...
>
> "Why is ED changed to '' or NULL for ID 5?"
>
> When you update to a subquery which returns no rows, then the field gets 
> updated to null.

So, I have to address "no matches or no rows returned" in another subquery.  
Huh!  Muchas gracias.

josé
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