CREATE TABLE table_204_997 (id NUMBER, "#" CLOB, "title" CLOB, "celebrity guest ( s ) " CLOB, "directed by" CLOB, "written by" CLOB, "original airdate" CLOB)

who was the last celebrity guest in the 2010 season ?
SELECT "celebrity guest(s)" FROM table_204_997 WHERE NOT "celebrity guest(s)" IS NULL ORDER BY id DESC LIMIT 1
SELECT "celebrity guest(s)" FROM "table_204_997" WHERE NOT "celebrity guest(s)" IS NULL ORDER BY "id" DESC FETCH FIRST 1 ROWS ONLY