On Mon, 26 Jul 2004, Harmon S. Nine wrote:

> However, we can't get the planner to do an timestamp-based index scan.
> Anyone know what to do?

I'd wonder if the type conversion is causing you problems.
CURRENT_TIMESTAMP - INTERVAL '10 minutes' is a timestamp with time zone
while the column is timestamp without time zone.  Casting
CURRENT_TIMESTAMP to timestamp without time zone seemed to make it able to
choose an index scan on 7.4.

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