How many different items appear in the high points column when the location attendance was US Airways Center 18,422?
CREATE TABLE table_17288825_10 (
    high_points VARCHAR,
    location_attendance VARCHAR
)
SELECT COUNT(high_points) FROM table_17288825_10 WHERE location_attendance = "US Airways Center 18,422"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many different items appear in the high points column when the location attendance was US Airways Center 18,422? ### Input: CREATE TABLE table_17288825_10 (
    high_points VARCHAR,
    location_attendance VARCHAR
) ### Response: SELECT COUNT(high_points) FROM table_17288825_10 WHERE location_attendance = "US Airways Center 18,422"