Podcast
Questions and Answers
What is the purpose of using a subquery in the given example?
What is the purpose of using a subquery in the given example?
- To retrieve student IDs from the scores table where the subject is 'Math' and the score is greater than 90 (correct)
- To retrieve scores for different subjects from the scores table
- To retrieve student information from the students table
- To retrieve names of students whose IDs match those returned by the subquery
What SQL clause is typically used in conjunction with aggregate functions to group rows into subsets?
What SQL clause is typically used in conjunction with aggregate functions to group rows into subsets?
- GROUP BY (correct)
- HAVING
- ORDER BY
- LIMIT
In the given example, what is the outer query retrieving?
In the given example, what is the outer query retrieving?
- Departments where the average salary exceeds a certain threshold
- Department names
- Employee salaries
- Average salary of employees in each department (correct)
What are the benefits of using SQL subqueries?
What are the benefits of using SQL subqueries?
What is the difference between inner and outer queries in SQL?
What is the difference between inner and outer queries in SQL?
What is the purpose of using SQL subqueries in a SELECT statement?
What is the purpose of using SQL subqueries in a SELECT statement?
Which clause in an SQL query can contain a subquery?
Which clause in an SQL query can contain a subquery?
Which SQL clause is the subquery used in the given example?
Which SQL clause is the subquery used in the given example?
What is the difference between an inner query and an outer query in a subquery?
What is the difference between an inner query and an outer query in a subquery?
What is a benefit of using SQL subqueries?
What is a benefit of using SQL subqueries?
How can you use a subquery in an UPDATE statement?
How can you use a subquery in an UPDATE statement?
What is a common use of SQL subqueries in the WHERE clause?
What is a common use of SQL subqueries in the WHERE clause?
What is the primary function of an inner query in a SQL subquery?
What is the primary function of an inner query in a SQL subquery?
In which clauses can a SQL subquery be used?
In which clauses can a SQL subquery be used?
What is the purpose of the outer query in a SQL subquery?
What is the purpose of the outer query in a SQL subquery?
What is the benefit of using SQL subqueries?
What is the benefit of using SQL subqueries?
What is the correct syntax for a SQL subquery?
What is the correct syntax for a SQL subquery?
What does the inner query in the example retrieve?
What does the inner query in the example retrieve?
