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Dell-EMC

E20-007 · Question #65

What describes the use of UNION clause in a SQL statement?

The correct answer is B. Operates on queries and potentially increases the number of rows. See the full explanation below for the reasoning.

Question

What describes the use of UNION clause in a SQL statement?

Options

  • AOperates on queries and potentially decreases the number of rows
  • BOperates on queries and potentially increases the number of rows
  • COperates on tables and potentially decreases the number of columns
  • DOperates on both tables and queries and potentially increases both the number of rows and columns

How the community answered

(47 responses)
  • A
    15% (7)
  • B
    72% (34)
  • C
    9% (4)
  • D
    4% (2)

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Full E20-007 Practice