Fill in the blank: When using SQL, the _____ clause can be used to filter a dataset of customers to only include people who have made a purchase in the past month.

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Multiple Choice

Fill in the blank: When using SQL, the _____ clause can be used to filter a dataset of customers to only include people who have made a purchase in the past month.

Filtering data with a condition is how you limit results to only rows that meet a criterion. In this case, you want customers who have made a purchase within the last month, so you compare the purchase date to the current date minus one month and keep rows that meet that condition. The WHERE clause is designed for this kind of row-level filter and is evaluated before any grouping or sorting. That's why it is the best choice here. The other clauses serve different purposes: SELECT chooses which columns to return, ORDER BY arranges the rows, and GROUP BY would collect rows into summary groups, which isn’t needed for simply filtering the dataset.

Filtering data with a condition is how you limit results to only rows that meet a criterion. In this case, you want customers who have made a purchase within the last month, so you compare the purchase date to the current date minus one month and keep rows that meet that condition. The WHERE clause is designed for this kind of row-level filter and is evaluated before any grouping or sorting. That's why it is the best choice here. The other clauses serve different purposes: SELECT chooses which columns to return, ORDER BY arranges the rows, and GROUP BY would collect rows into summary groups, which isn’t needed for simply filtering the dataset.

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