CREATE TABLE table_203_436 (id NUMBER, "year" NUMBER, "competition" CLOB, "venue" CLOB, "position" CLOB, "notes" CLOB)

what 's the difference in meters between the 2004 and 2009 competitions ?
SELECT (SELECT "notes" FROM table_203_436 WHERE "year" = 2004) - (SELECT "notes" FROM table_203_436 WHERE "year" = 2009)
SELECT (SELECT "notes" FROM "table_203_436" WHERE "year" = 2004) - (SELECT "notes" FROM "table_203_436" WHERE "year" = 2009)