Question

The ____________________ function can be used to count the total records that meet a specific condition, including those that contain NULL values?

Answer 1

The COUNT function, specifically COUNT(*), is used in SQL to count all records including those with NULL values.

Step-by-step explanation:

The COUNT function can be used to count the total records that meet a specific condition, including those that contain NULL values. In SQL, you can use COUNT(*) to include all rows, regardless of column values, which means it will count rows with NULL values as well. In contrast, using COUNT(column_name) will only count rows where the specified column does not contain NULL values. Therefore, to count all records, including those with NULL values, COUNT(*) is the appropriate function to use.