SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function minus (children 1)
     ExpressionList (children 2)
      Function minus (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier float64
        Function multiply (children 1)
         ExpressionList (children 2)
          Literal UInt64_2
          Function count (children 1)
           ExpressionList (children 1)
            Identifier float64
      Function minus (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier float64
        Function multiply (children 1)
         ExpressionList (children 2)
          Literal UInt64_3
          Function count (children 1)
           ExpressionList (children 1)
            Identifier float64
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table
