SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Identifier col2
    Function plus (children 1)
     ExpressionList (children 2)
      Identifier col2
      Literal UInt64_1
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier test2
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier col1
   Function CAST (children 1)
    ExpressionList (children 2)
     Function multiply (children 1)
      ExpressionList (children 2)
       Identifier col2
       Literal UInt64_2
     Literal \'UInt8\'