troubleshooting Question

Index not used in a select statement, why?

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gram77Flag for India asked on
Oracle Database
24 Comments3 Solutions397 ViewsLast Modified:
I have a simple select statement that does a full table scan on a very large table even though there is a where clause in the select
statement restricting the rows.

WHERE DATA_STORE_ID IS NULL

There is an index on this column so why doesn't Oracle using this index?
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Tolomir
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