CREATE TABLE table_28645 ("Rank by average" FLOAT, "Place" FLOAT, "Couple" CLOB, "Total points" CLOB, "Number of dances" FLOAT, "Average" CLOB)

How many ranks by average for the couple Tana and Stuart?
SELECT COUNT("Rank by average") FROM table_28645 WHERE "Couple" = 'Tana and Stuart'
SELECT COUNT("Rank by average") FROM "table_28645" WHERE "Couple" = 'Tana and Stuart'