CREATE TABLE table_11622255_1 (purse__ INT, tournament VARCHAR)

what is the minimum purse( $ ) where tournament is ko olina senior invitational
SELECT MIN(purse__) AS $__ FROM table_11622255_1 WHERE tournament = "Ko Olina Senior Invitational"
SELECT MIN("purse__") AS $__ FROM "table_11622255_1" WHERE "Ko Olina Senior Invitational" = "tournament"