CREATE TABLE table_50406 ("Round" FLOAT, "Pick" FLOAT, "Overall" FLOAT, "Name" TEXT, "Position" TEXT, "College" TEXT)

Which Round has a College of appalachian state, and an Overall smaller than 156?
SELECT COUNT("Round") FROM table_50406 WHERE "College" = 'appalachian state' AND "Overall" < '156'
SELECT COUNT("Round") FROM "table_50406" WHERE "College" = 'appalachian state' AND "Overall" < '156'