CREATE TABLE table_57282 ("Last" CLOB, "First" CLOB, "Year" FLOAT, "Sport" CLOB, "Country" CLOB)

Name the sum of year for swimming and first of mike
SELECT SUM("Year") FROM table_57282 WHERE "Sport" = 'swimming' AND "First" = 'mike'
SELECT SUM("Year") FROM "table_57282" WHERE "First" = 'mike' AND "Sport" = 'swimming'