embedded sql with indicators in other DBs

What do other DBs do with their output variables if there is an embedded SQL
query resulting in a NULL return value? What I mean is:

exec sql select text into :txt:ind from ...

If text is NULL, ind will be set, but does txt change?

I was just told Informix blanks txt.

Michael
-- 
Michael Meskes
Michael@Fam-Meskes.De
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