CREATE TABLE table_57499 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

What date did Collingwood play as the home team?
SELECT "Date" FROM table_57499 WHERE "Home team" = 'collingwood'
SELECT "Date" FROM "table_57499" WHERE "Home team" = 'collingwood'