Table: zune_apps_2
Columns: title
developer
genre
release_date
version

Question: What is Title, when Developer is "2Play Mobile", and when Genre is "Action"?
SQL: SELECT "title" FROM zune_apps_2 WHERE "developer" = '2play mobile' AND "genre" = 'action'

Question: What is the highest Version, when Release Date is "2011-04-01"?
SQL: SELECT MAX("version") FROM zune_apps_2 WHERE "release_date" = '2011-04-01'

Question: What is Version, when Genre is "Action", and when Title is "Hairball"?
SQL: SELECT "version" FROM zune_apps_2 WHERE "genre" = 'action' AND "title" = 'hairball'