What Is an Alias in SQL?

Question

Choose all statements about aliases in SQL that are true.

Answer 1

A column alias from SELECT can be used in WHERE of the same query.

Answer 2

A column alias can be used in ORDER BY of the same query.

Answer 3

An alias with spaces must be quoted, for example AS "Film title".

Answer 4

The keyword AS is optional: SELECT title film_title works like SELECT title AS film_title.

Answer 5

To join a table to itself, you must give it two different aliases.

Answer 6

Table aliases make a query run faster.

Answer 7

An alias renames the column in the table permanently.

Answer 8

An alias is a temporary name for a column or a table that exists only while the query runs.