Table: tv_show_ep
Columns: no
col
original_airdate
performer_1
performer_2
performer_3
performer_4
u_s_viewers_millions

Question: How many millions of people in the US saw the episode number 226?
SQL: SELECT "u_s_viewers_millions" FROM tv_show_ep WHERE "no" = 226

Question: What is the highest episode number?
SQL: SELECT MAX("no") FROM tv_show_ep

Question: Who was performer 1 in the episode number 7 where Heather Anne Campbell was performer 2?
SQL: SELECT "performer_1" FROM tv_show_ep WHERE "performer_2" = 'Heather Anne Campbell' AND "col" = 7

Question: What's the number of the episode seen by 2.99 millions of people in the US, where performer 2 was Heather Anne Campbell?
SQL: SELECT MIN("col") FROM tv_show_ep WHERE "performer_2" = 'Heather Anne Campbell' AND "u_s_viewers_millions" = '2.99'