Questions: Using the data shown in the exam table below, which lettergrade will the following statement return?

Transcript text: Using the data shown in the exam table below, which letter_grade will the following statement return?

Solution

Solution Steps

Step 1: Understanding the SQL query

The SQL query SELECT letter_grade FROM exam ORDER BY letter_grade DESC LIMIT 1; selects the letter_grade column from the exam table. It then orders the results in descending order based on the letter_grade column and limits the output to only the first row.

Step 2: Ordering the letter grades

Ordering the letter_grade values in descending order (Z-A) gives us: F F C C C B B A A

Step 3: Applying the LIMIT clause

The LIMIT 1 clause restricts the output to only the first row after ordering. Therefore, the query will return the first 'F' after ordering.