Table: harper_island_ratings
Columns: episode
us_air_date
rating
share
rating_share_18_49
viewers_millions

Question: How many viewers did Episode #5 have?
SQL: SELECT "viewers_millions" FROM harper_island_ratings WHERE "episode" = 5

Question: How many share values are listed for the episode with a rating/share value of 2.6/8?
SQL: SELECT COUNT("share") FROM harper_island_ratings WHERE "rating_share_18_49" = '2.6/8'

Question: How many episodes were originally aired Saturday, May 30, 2009?
SQL: SELECT COUNT("episode") FROM harper_island_ratings WHERE "us_air_date" = 'Saturday, May 30, 2009'

Question: What is the rating of the episode with a rating/share of 0.9/4?
SQL: SELECT "rating" FROM harper_island_ratings WHERE "rating_share_18_49" = '0.9/4'

Question: How many episodes aired Saturday, July 11, 2009
SQL: SELECT COUNT("episode") FROM harper_island_ratings WHERE "us_air_date" = 'Saturday, July 11, 2009'

Question: How many rating/share values does the episode aired on Saturday, May 9, 2009?
SQL: SELECT COUNT("rating_share_18_49") FROM harper_island_ratings WHERE "us_air_date" = 'Saturday, May 9, 2009'