On 6/24/2019 7:38 PM, David G. Johnston wrote:
On Mon, Jun
24, 2019 at 7:31 PM Igal @ Lucee.org <igal@xxxxxxxxx>
wrote:
If a function select data
from a table, and the rows in the table may
change, would that function qualify for Immutable or does it
have to be
Stable? I'm asking because according to the docs [1]: "An
IMMUTABLE
function cannot modify the database and is guaranteed to
return the same
results given the same arguments forever".
So for the same arguments, the result would change only if
the data in
the table changes. Does that mean that it violates the
"forever" clause
and therefore can be only marked as Stable and not
Immutable?
Yes
Forever means
beyond the lifetime of a single transaction and thus it is
possible for the changing of the table contents to impact
the return value of the function.
Thanks for clarifying, David.
Igal
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