Table: tv_ratings_6
Columns: no
episode
rating
share
rating_share_18_49
viewers_millions
rank_timeslot
rank_night

Question: What was the rating/share for 18-49 for the episode that had 5.90 million viewers? 
SQL: SELECT "rating_share_18_49" FROM tv_ratings_6 WHERE "viewers_millions" = '5.90'

Question: What was the title of episode 3?
SQL: SELECT "episode" FROM tv_ratings_6 WHERE "no" = 3

Question: What number episode had a rating of 4.7?
SQL: SELECT MIN("no") FROM tv_ratings_6 WHERE "rating" = '4.7'

Question: What was the share for the "Lisa Kudrow" episode? 
SQL: SELECT MIN("share") FROM tv_ratings_6 WHERE "episode" = '"Lisa Kudrow"'

Question: What was the rating for the episode that had 5.90 million viewers? 
SQL: SELECT "rating" FROM tv_ratings_6 WHERE "viewers_millions" = '5.90'

Question: What number episode had a 4.2 rating? 
SQL: SELECT MIN("no") FROM tv_ratings_6 WHERE "rating" = '4.2'