CREATE TABLE table_23108 ("No." FLOAT, "Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "To par" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

What is the minimum number of the bmw championship tournament.
SELECT MIN("No.") FROM table_23108 WHERE "Tournament" = 'BMW Championship'
SELECT MIN("No.") FROM "table_23108" WHERE "Tournament" = 'BMW Championship'