What is an Oracle index?


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I have a table that log salary-increase-process have fields: autoid, old_salary, acctno and table EMP: acctno, name, salary I want to list count increase-salary of employees, each have old_salary, new_salary. Help me with SELECT statement, please!

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Can we commit inside a function in oracle?

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What is clusters ?

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What is a data lock in oracle?

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What is a dynamic performance view in oracle?

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How many different types of indexes we have in oracle?

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How to get a list of all user accounts in the database?

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What is Public Database Link ?

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How many memory layers are in the oracle shared pool?

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Describe the types of sub query?

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What is difference between truncate and delete?

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select statement does not retrieve any records. what exception is raised?

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