What is cross join example?

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What is difference between primary and secondary key?

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What is rownum and rowid?

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while loading data into database how can u skip header and footer records in sql*loader

1 Answers   Oracle,

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How does join work in sql?

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what are the advantages and disadvantages of views in a database? : Sql dba

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What is the maximum number of triggers,can apply to a single table?

2 Answers  

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how to concatenate two character strings? : Sql dba

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I am creating an index on Emp table Empno column,if u using this indexed column in ur SELECT stmt. where clause,then how do u know that yr index will be working or nor? Thanks Advance...

3 Answers  

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What is dbo in sql?

0 Answers  

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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 a temporal table?

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