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- 18:48, 22 January 2013 +57 m More JOIN operations Changed question 12 text to "Which were the busiest years for 'John Travolta', show the year and the number of movies he made each year for any year in which he made at least 2 movies."
- 20:01, 15 January 2013 +1 m The JOIN operation Changed "matchid date" to "matchid, date"
- 20:00, 15 January 2013 +24 m The JOIN operation Changed "For every match where 'GER' scored, show the number of goals scored by 'GER'" to "For every match where 'GER' scored, show the matchid, match date and the number of goals scored by 'GER'"
- 19:16, 15 January 2013 +4 m The JOIN operation Changed the order of the columns asked for to match the answer.