The condition in a WHERE clause can refer to only one value.

More Questions from Introduction to SQL

• If you are going to use a combination of three or more AND and OR conditions, it is often easier to use the NOT and NOT IN operators.
• The keyword BETWEEN can be used in a WHERE clause to refer to a range of values.
• COUNT(field_name) tallies only those rows that contain a value; it ignores all null values.
• SQL provides five built-in functions: COUNT, SUM, AVG, MAX, MIN.
• The keyword LIKE can be used in a WHERE clause to refer to a range of values.
• A dynamic view is one whose contents materialize when referenced.
• The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements.
• A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.
• Indexes may be created or dropped at any time.
• SQL is a programming language.

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