SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier l.number
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier r.number
    Function grouping (alias g) (children 1)
     ExpressionList (children 1)
      Identifier l.number
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (alias l) (children 1)
       ExpressionList (children 1)
        Literal UInt64_1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      Function numbers (alias r) (children 1)
       ExpressionList (children 1)
        Literal UInt64_2
     TableJoin (children 1)
      Function less (children 1)
       ExpressionList (children 2)
        Identifier l.number
        Identifier r.number
   ExpressionList (children 2)
    Identifier l.number
    Identifier g
