How do you remove duplicate records from a table?

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What is data control language?

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How do you use join?

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How can we debug in PL/SQL?

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how can i read files from a pl/sq l program

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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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How does sql developer connect to oracle database?

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How is a process of pl/sql compiled?

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Which normal form is best?

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which tcp/ip port does sql server run on? : Sql dba

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IF EMP HAS 2 ROWS,DEPT HAS 4 ROWS.WHATS THE RESULT OF SELECT * FROM EMP,DEPT;

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When is a declare statement required?

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