What is the function of the TRUNCATE command in SQL?ADelete specific rows from the table.BDelete all rows from the table.CAdds a new row to the table.

Sure, let's break down the question and the options step by step to determine the correct answer.

Question:

What is the function of the TRUNCATE command in SQL?

Options:

A. Delete specific rows from the table. B. Delete all rows from the table. C. Adds a new row to the table.

Step-by-Step Analysis:

1. Understanding the TRUNCATE Command:

   • The TRUNCATE command in SQL is used to delete all rows from a table. It is similar to the DELETE command without a WHERE clause, but it is generally faster and uses fewer system and transaction log resources.

2. Option A: Delete specific rows from the table.

   • This option is incorrect because TRUNCATE does not allow for the deletion of specific rows. To delete specific rows, you would use the DELETE command with a WHERE clause.

3. Option B: Delete all rows from the table.

   • This option is correct. The TRUNCATE command removes all rows from a table, effectively resetting the table to its empty state.

4. Option C: Adds a new row to the table.

   • This option is incorrect because TRUNCATE does not add rows to a table. To add a new row, you would use the INSERT command.

Conclusion:

The correct answer is B. Delete all rows from the table.