What is percent sign in sql?

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Which sorts rows in sql?

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How do I tune a sql query?

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how to return query output in html format? : Sql dba

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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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Where the integrity constrints are stored in Data Dictionary?

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What are the popular database management systems in the it industry?

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How many indexes can be created on a table in sql?

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What is left join example?

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Is sql developer case sensitive?

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Can you call pl/sql package functions from within a fast formula?

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Can we create foreign key without primary key?

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