CREATE TABLE table_203_44 (id NUMBER, "stage" CLOB, "date" CLOB, "route" CLOB, "terrain" CLOB, "length" CLOB, "winner" CLOB)

how many different countries won at least one stage in the 1964 tour de france ?
SELECT COUNT(DISTINCT "winner") FROM table_203_44
SELECT COUNT(DISTINCT "winner") FROM "table_203_44"