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Home Database Introduction to SQL Comments

  • Question
  • SQL provides five built-in functions: COUNT, SUM, AVG, MAX, MIN.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 


  • Introduction to SQL problems


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    • 1. COUNT(field_name) tallies only those rows that contain a value; it ignores all null values.

    • Options
    • A. True
    • B. False
    • Discuss
    • 2. The keyword BETWEEN can be used in a WHERE clause to refer to a range of values.

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. If you are going to use a combination of three or more AND and OR conditions, it is often easier to use the NOT and NOT IN operators.

    • Options
    • A. True
    • B. False
    • Discuss
    • 4. The condition in a WHERE clause can refer to only one value.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. SQL provides the AS keyword, which can be used to assign meaningful column names to the results of queries using the SQL built-in functions.

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. The keyword LIKE can be used in a WHERE clause to refer to a range of values.

    • Options
    • A. True
    • B. False
    • Discuss
    • 7. A dynamic view is one whose contents materialize when referenced.

    • Options
    • A. True
    • B. False
    • Discuss
    • 8. The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. Indexes may be created or dropped at any time.

    • Options
    • A. True
    • B. False
    • Discuss


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