CREATE TABLE table_25540 ("No." FLOAT, "#" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "U.S. viewers  ( million ) " CLOB, "Rank  ( week ) " CLOB, "Original air date" CLOB)

How many # were written by david hoselton?
SELECT MAX("#") FROM table_25540 WHERE "Written by" = 'David Hoselton'
SELECT MAX("#") FROM "table_25540" WHERE "Written by" = 'David Hoselton'