Multiple choice technology databases

What is the purpose of the SQL AS clause?

  1. The AS SQL clause is used change the name of a column in the result set or to assign a name to a derived column.

  2. The AS clause is used with the JOIN clause only.

  3. The AS clause defines a search condition.

  4. The AS clause defines a group

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The AS clause is used to alias columns - either renaming existing columns in results (SELECT col AS new_name) or naming derived columns (SELECT price * qty AS total). It makes output more readable and allows referencing computed values by name.