SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function sum (children 1)
     ExpressionList (children 1)
      Function plus (alias i) (children 1)
       ExpressionList (children 2)
        Identifier uint64
        Literal UInt64_1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table
   Function greater (children 1)
    ExpressionList (children 2)
     Identifier i
     Literal UInt64_0
