CREATE TABLE table_74220 ("Episode Number" CLOB, "Episode Name" CLOB, "Airdate" CLOB, "Viewers  ( millions ) " CLOB, "Rank ( Timeslot ) " CLOB, "Rank 18\\u201349  ( Night ) " CLOB)

what is the total rank on airdate march 30, 2011?
SELECT COUNT("Rank(Timeslot)") FROM table_74220 WHERE "Airdate" = 'March 30, 2011'
SELECT COUNT("Rank(Timeslot)") FROM "table_74220" WHERE "Airdate" = 'March 30, 2011'