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Interview quiz track

First 2 free Junior SQL

SQL – String Functions

Practice SQL string function interview questions covering CONCAT, SUBSTRING, TRIM, REPLACE, and pattern matching. Write queries and receive feedback on correctness and approach. Ideal for beginner SQL interview prep. First 2 questions are free with full feedback.

  • Level Junior
  • Questions 12
  • SQL
  • string functions
  • topic
  • beginner
  • interview practice

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Sample sql – string functions interview questions

Preview 6 questions from this track in quiz order. In the full quiz you answer one at a time — type or speak — then get a score and feedback.

  1. How do you concatenate two columns in SQL?

    What a strong answer includes

    Uses CONCAT or ||.

  2. Write a query to extract the first 3 characters of a name.

    What a strong answer includes

    Uses SUBSTRING or LEFT.

  3. How do you remove leading and trailing spaces?

    What a strong answer includes

    Uses TRIM.

  4. Write a query to replace “Inc” with “LLC” in a company name.

    What a strong answer includes

    Uses REPLACE.

  5. How do you convert a string to uppercase?

    What a strong answer includes

    Uses UPPER.

  6. Write a query to find emails that end with “@gmail.com”.

    What a strong answer includes

    Uses LIKE.