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Questions and Answers
Which of the following statements best describes the purpose of SQL functions?
Which of the following statements best describes the purpose of SQL functions?
- To perform computations and return a single result based on input values (correct)
- To manage the structure and design of the database schema
- To display data in a tabular format for better visualization
- To organize and optimize the storage of data in the database
What is the primary role of the 'GROUP BY' clause in a SQL query?
What is the primary role of the 'GROUP BY' clause in a SQL query?
- To sort the rows of a result set in ascending or descending order
- To filter the rows of a result set based on specified conditions
- To join multiple tables based on a related column between them
- To group rows that have the same values into summary rows (correct)
In SQL, what is the purpose of the 'HAVING' clause in a query?
In SQL, what is the purpose of the 'HAVING' clause in a query?
- To filter groups based on specified conditions after the 'GROUP BY' clause is applied (correct)
- To join multiple tables based on a related column between them
- To perform arithmetic operations on numeric values in the result set
- To select specific columns to include in the result set
Which SQL function is used to find the maximum value of a specific column in a table?
Which SQL function is used to find the maximum value of a specific column in a table?
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