Stop Criteria for Sql Execution

Why does Oracle have to execute the sql and scan data in a table for a sql like this:

Select * from table
Where column1 is null and column1=3D10

Or=20

Select * from table
Where column1=3D10 and column1=3D20

All the research money going to optimize the optimizer, and still can't take care of simple stuff like this.

Am I missing something?

I will probably start searching for smarter databases :)

Waleed

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