SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 5)
   ExpressionList (children 3)
    Function max (alias column_1) (children 1)
     ExpressionList (children 1)
      Identifier column_1
    Function max (alias column_2) (children 1)
     ExpressionList (children 1)
      Identifier column_2
    Identifier id
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias T1) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 3)
          ExpressionList (children 3)
           Function max (alias column_1) (children 1)
            ExpressionList (children 1)
             Identifier column_1
           Literal NULL (alias column_2)
           Identifier id
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier clickhouse_alias_issue_1
          ExpressionList (children 1)
           Identifier id
         SelectQuery (children 4)
          ExpressionList (children 3)
           Literal NULL (alias column_1)
           Function max (alias column_2) (children 1)
            ExpressionList (children 1)
             Identifier column_2
           Identifier id
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier clickhouse_alias_issue_2
          ExpressionList (children 1)
           Identifier id
          Set
   ExpressionList (children 1)
    Identifier id
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier id
   Set
