CREATE TABLE table_58045 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the highest crowd at the venue MCG?
SELECT MAX("Crowd") FROM table_58045 WHERE "Venue" = 'mcg'
SELECT MAX("Crowd") FROM "table_58045" WHERE "Venue" = 'mcg'