SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function groupArraySorted (children 2)
     ExpressionList (children 1)
      Function tuple (children 1)
       ExpressionList (children 2)
        Function toUnixTimestamp (children 1)
         ExpressionList (children 1)
          Identifier timestamp
        Identifier value
     ExpressionList (children 1)
      Literal UInt64_30
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier ts_data
