Table: episodes_viewers_9
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
prod_code
viewers_millions

Question: when the number of spectator are 5.28 millions, which is the smallest number of the episode in series? 
SQL: SELECT MIN("no_in_series") FROM episodes_viewers_9 WHERE "viewers_millions" = '5.28'

Question: which is the biggest number of episode in the season, where the number of the episode in series is 20?
SQL: SELECT MAX("no_in_season") FROM episodes_viewers_9 WHERE "no_in_series" = 20

Question: what is the name of the episode when the number of spectators was 5.60 millions?
SQL: SELECT "title" FROM episodes_viewers_9 WHERE "viewers_millions" = '5.60'

Question: how many millions of spectator did has the episode whose prod.code was rp#213?
SQL: SELECT "viewers_millions" FROM episodes_viewers_9 WHERE "prod_code" = 'RP#213'

Question: which is the biggest number of episode in the season, when the director of the episode was Constantine Makris?
SQL: SELECT MAX("no_in_season") FROM episodes_viewers_9 WHERE "directed_by" = 'Constantine Makris'