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    Question

    What is the purpose of the CASE statement in SQL?

    A To create a new table with a defined structure and constraints. Correct Answer Incorrect Answer
    B To perform conditional logic and return specific values based on different conditions in a query. Correct Answer Incorrect Answer
    C To join multiple tables based on a common column and retrieve related data. Correct Answer Incorrect Answer
    D To insert, update, or delete records in a database table. Correct Answer Incorrect Answer
    E To define and manage user permissions and access controls in a database. Correct Answer Incorrect Answer

    Solution

    The CASE statement in SQL is used to perform conditional logic within a query. It allows you to return different values based on specific conditions, making it a powerful tool for handling complex queries and data transformations. The CASE statement can be used in SELECT, UPDATE, and ORDER BY clauses, among others. It operates by evaluating a series of conditions and returning a corresponding result when a condition is met.

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