On 8/27/10 5:21 PM, Ozer, Pam wrote:
I have a query that
Select Distinct VehicleId
From Vehicle
Where VehicleMileage between 0 and 15000.
I have an index on VehicleMileage. Is there another way to put an index on a
between? The index is not being picked up. It does get picked up when I run
Select Distinct VehicleId
From Vehicle
Where VehicleMileage = 15000.
I just want to make sure that there is not a special index I should be using.
You need to post EXPLAIN ANALYZE of your query. It could be that an index scan
is actually not a good plan (for example, a sequential scan might be faster if
most of your vehicles have low mileage). Without the EXPLAIN ANALYZE, there's
no way to say what's going on.
Did you ANALYZE your database after you loaded the data?
Craig
Thanks
*Pam Ozer*
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