Exit E20-007 Data Science and Big Data Analytics
Question 3 of 5
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Q3 Single choice

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

  • A

    Operates on queries and potentially increases the number of rows

  • B

    Operates on queries and potentially decreases the number of rows

  • C

    Operates on tables and potentially decreases the number of columns

  • D

    Operates on both tables and queries and potentially increases both the number of rows and columns

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