How many more songs did the the band play in 2002 than in 2000?
return the  band ;return songs played of #1 ;return #2 in  2002 ;return #2 in  2000 ;return number of  #3 ;return number of  #4 ;return the  difference of #5 and  #6
['select', 'project', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']