CREATE TABLE table_204_799 (id DECIMAL, "name" TEXT, "built" TEXT, "listed" TEXT, "location" TEXT, "county" TEXT, "type" TEXT)

how many total bridges are in copiah county ?
SELECT COUNT(DISTINCT "name") FROM table_204_799 WHERE "county" = 'copiah'
SELECT COUNT(DISTINCT "name") FROM "table_204_799" WHERE "county" = 'copiah'