SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function groupArrayMovingSum (children 2)
     ExpressionList (children 1)
      Literal \'x\'
     ExpressionList (children 1)
      Function CAST (children 1)
       ExpressionList (children 2)
        Literal \'0\'
        Literal \'Int64\'
