SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function toDateTime64 (children 1)
     ExpressionList (children 2)
      Function toString (children 1)
       ExpressionList (children 1)
        Function toString (children 1)
         ExpressionList (children 2)
          Literal \'0000-00-00 00:00:000000-00-00 00:00:00\'
          Function toDateTime64 (children 1)
           ExpressionList (children 1)
            Function toDateTime64 (children 1)
             ExpressionList (children 3)
              Literal \'655.36\'
              Literal Int64_-2
              Literal NULL
      Literal NULL
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t1_00850
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 2)
           Function toDateTime64 (children 1)
            ExpressionList (children 2)
             Function toDateTime64 (children 1)
              ExpressionList (children 3)
               Literal \'6553.6\'
               Literal \'\'
               Literal NULL
             Literal NULL
           Asterisk
          TablesInSelectQuery (children 2)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Subquery (children 1)
              SelectWithUnionQuery (children 1)
               ExpressionList (children 1)
                SelectQuery (children 2)
                 ExpressionList (children 1)
                  Asterisk
                 TablesInSelectQuery (children 1)
                  TablesInSelectQueryElement (children 1)
                   TableExpression (children 1)
                    TableIdentifier t2_00850
           TablesInSelectQueryElement (children 2)
            TableExpression (children 1)
             Subquery (children 1)
              SelectWithUnionQuery (children 1)
               ExpressionList (children 1)
                SelectQuery (children 2)
                 ExpressionList (children 2)
                  Function toDateTime64 (children 1)
                   ExpressionList (children 3)
                    Literal \'6553.7\'
                    Literal UInt64_1024
                    Literal NULL
                  Asterisk
                 TablesInSelectQuery (children 1)
                  TablesInSelectQueryElement (children 1)
                   TableExpression (children 1)
                    TableIdentifier t1_00850
            TableJoin (children 1)
             ExpressionList (children 1)
              Identifier dummy
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier dummy