Value transfered to next row when Null about pypyodbc HOT 1 OPEN

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(venv) PS C:\Users\R\Documents\projects\test> $result =(new-Object Data.Odbc.OdbcCommand("SELECT CODE from CWS_BASE WHERE id in ('120140','66783')",$conn)).ExecuteReader()
(venv) PS C:\Users\R\Documents\projects\test> while ($result.Read()) {
>>     $value = $result.GetValue(0)
>>     Write-Output $value
>> }
BLOCAGE 

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