If there is an l sharped bar with no more than two l turns in the bar table.
return bar  ;return #1 that is l sharped ;return bar  table of #2 ;return l turns of #3 ;return number of  #4 for each  #2 ;return #2 where  #5 is at most two ;return number of  #6 ;return if  #7 is at least one
['select', 'filter', 'project', 'project', 'group', 'comparative', 'aggregate', 'boolean']