SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t0
   ExpressionList (children 1)
    Function gcd (children 1)
     ExpressionList (children 2)
      Function negate (children 1)
       ExpressionList (children 1)
        Function sign (children 1)
         ExpressionList (children 1)
          Identifier c0
      Function negate (children 1)
       ExpressionList (children 1)
        Identifier c0
   Set
