What does rownum mean in sql?
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Which are sql * plus commands?
What is the primary key?
Explain UNION,MINUS,UNION ALL, INTERSECT?
What are the dml statements?
Enlist the characteristics of pl/sql?
what is cursor. write example of it. What are the attributes of cursor.
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.
How long will it take to learn pl sql?
how to see the oracle 9i/10g table in pc? or In my pc where the table is saved and how to see?
What is the difference between microsoft access and sql?
what is the difference between myisam static and myisam dynamic? : Sql dba
What are sql objects?
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