CREATE TABLE table_20766 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Ground" TEXT, "Crowd" FLOAT, "Date" TEXT)

What is the largest crowd when essendon is the home team?
SELECT MAX("Crowd") FROM table_20766 WHERE "Home team" = 'Essendon'
SELECT MAX("Crowd") FROM "table_20766" WHERE "Home team" = 'Essendon'