IN clause performance

Basic query optimization question- does Postgres process

x IN (y1, y2)
as fast as
(x = y1 OR x = y2)

in a function?

On Thu, Jul 19, 2007 at 05:52:30AM -0700, Paul Codler wrote:

Basic query optimization question- does Postgres process

x IN (y1, y2)
as fast as
(x = y1 OR x = y2)

in a function?

EXPLAIN indicates this.

Peter