CREATE TABLE table_31377 ("Result" TEXT, "Date" TEXT, "Race" TEXT, "Venue" TEXT, "Group" TEXT, "Distance" TEXT, "Weight  ( kg ) " TEXT, "Jockey" TEXT, "Winner/2nd" TEXT)

What many times was the victoria derby raced?
SELECT COUNT("Date") FROM table_31377 WHERE "Race" = 'Victoria Derby'
SELECT COUNT("Date") FROM "table_31377" WHERE "Race" = 'Victoria Derby'