CREATE TABLE table_12063 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

With a North Melbourne away team, what is the average crowd?
SELECT AVG("Crowd") FROM table_12063 WHERE "Away team" = 'north melbourne'
SELECT AVG("Crowd") FROM "table_12063" WHERE "Away team" = 'north melbourne'