CREATE TABLE table_19905183_1 (team VARCHAR2, head_coach VARCHAR2)

In how many teams is Waqar Younis the head coach?
SELECT COUNT(team) FROM table_19905183_1 WHERE head_coach = "Waqar Younis"
SELECT COUNT("team") FROM "table_19905183_1" WHERE "Waqar Younis" = "head_coach"