Can primary key be changed?

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Does sqlite need a server?

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Can we use insert statement in function?

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what is single byte over head in oracle..?

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Why do we use triggers?

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Explain the uses of database trigger.

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How do I view tables in mysql?

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Which command is used to call a stored procedure?

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What is sql*loader and what is it used for? : aql loader

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What is the main difference between a UNION statement and a UNION ALL statement? 1. A UNION statement eliminates duplicate rows; a UNION ALL statement includes duplicate rows. 2. A UNION statement can be used to combine any number of queries; a UNION ALL statement can be used to combine a maximum of two queries. 3. A UNION statement can only combine queries that have parallel fields in the SELECT list; a UNION ALL statement can combine queries with differing SELECT list structures. 4. A UNION statement cannot be used with aggregate functions; a UNION ALL statement can be used with aggregate functions. 5. There is no difference between the two statements; they are interchangeable.

2 Answers   Saman Bank, Sonata,

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What is the difference between a primary key and a clustered index?

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How to change the order of columns in Oracle SQL Plus ?

0 Answers   MCN Solutions,

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