Table: rush_tv_series
Columns: season
date_released
of_episodes
of_discs
special_features

Question: On how many dates was the complete 4th series released?
SQL: SELECT COUNT("date_released") FROM rush_tv_series WHERE "season" = 'The Complete 4th Series'

Question: How many discs for the complete 4th series?
SQL: SELECT MAX("of_discs") FROM rush_tv_series WHERE "season" = 'The Complete 4th Series'

Question: What day was the complete 2nd series: volume one released?
SQL: SELECT "date_released" FROM rush_tv_series WHERE "season" = 'The Complete 2nd Series: Volume One'