CREATE TABLE table_203_285 (id NUMBER, "year" NUMBER, "location" CLOB, "gold" CLOB, "silver" CLOB, "bronze" CLOB)

how long is the time between the times the championship was held in moscow ?
SELECT MAX("year") - MIN("year") FROM table_203_285 WHERE "location" = 'moscow'
SELECT MAX("year") - MIN("year") FROM "table_203_285" WHERE "location" = 'moscow'