CREATE TABLE "table1_28037619_2" (
  "no" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" real,
  "u_s_viewers_million" text
);

Question: Who wrote the episode that had 6.05 million U.s. viewers?
SQL: SELECT "written_by" FROM "table1_28037619_2" WHERE "u_s_viewers_million"='6.05';

Question: How many production codes are there for the episode that had 4.36 million u.s. viewers?
SQL: SELECT COUNT("production_code") FROM "table1_28037619_2" WHERE "u_s_viewers_million"='4.36';

Question: How many people wrote the episode that had 7.26 million u.s. viewers?
SQL: SELECT COUNT("written_by") FROM "table1_28037619_2" WHERE "u_s_viewers_million"='7.26';

Question: How many million u.s. viewers saw the episode that was directed by roger young and written by debra j. fisher?
SQL: SELECT "u_s_viewers_million" FROM "table1_28037619_2" WHERE "directed_by"='Roger Young' AND "written_by"='Debra J. Fisher';

Question: What is the name of the episode written by David Matthews?
SQL: SELECT "title" FROM "table1_28037619_2" WHERE "written_by"='David Matthews';