CREATE TABLE table_18845 ("Result" CLOB, "Date" CLOB, "Race" CLOB, "Venue" CLOB, "Group" CLOB, "Distance" CLOB, "Weight  ( kg ) " FLOAT, "Jockey" CLOB, "Winner/2nd" CLOB)

How many races were for a distance of 2020 m?
SELECT COUNT("Group") FROM table_18845 WHERE "Distance" = '2020 m'
SELECT COUNT("Group") FROM "table_18845" WHERE "Distance" = '2020 m'