CREATE TABLE table_11406866_2 (a_ VARCHAR2, kickoff_ VARCHAR2)

what is the total number of kickoff [a ] where week is week
SELECT COUNT(kickoff_) AS "a_" FROM table_11406866_2 WHERE "week" = "week"
SELECT COUNT("kickoff_") AS "a_" FROM "table_11406866_2" WHERE "week" = "week"