Hi I have the following table:
CREATE TABLE x ('col1', 'col2', 'col3')
Create col1index on x ('col1')
When I run this query: "select * from x where col1 is null" I see the index on
x is used.
When I run this query: "select * from x where col1 is NOT null" I see the index
on x is not used.
How can indexes be used with "not null" queries?
Thanks
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