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GATE CSE SQL — practice questions

Explore 1 free SQL questions in GATE CSE Databases. Open each question or exercise to read its content, reference answers and available explanation.

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SQL questions and exercises with answers

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SQL — true or false?Read the answer and worked solution →

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SQL — true or false?

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Questions
  1. Statement is true
    Yes
    Statement
    JOIN without specifying a condition produces a Cartesian product.
  2. Statement is true
    No
    Statement
    GROUP BY must accompany every SELECT that uses an aggregate.
  3. Statement is true
    Yes
    Statement
    HAVING filters groups; WHERE filters rows.
  4. Statement is true
    No
    Statement
    NULL = NULL evaluates to TRUE in standard SQL.

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