Subject Re: [firebird-support] Re: Group by date on a timestamp field
Author Dimitry Sibiryakov
On 16 Dec 2005 at 10:53, Ivan Prenosil wrote:

>> Because expressions in SELECT are calculated after expressions in
>Then why does this work ??

:) You've caught me. I don't know how it is done exactly. I know
for sure that the expression is evaluated twice in this case.
Probably, whole branch of execution tree is copied.

SY, Dimitry Sibiryakov.