[ulmilten]

Kleines Update:
Habs hinbekommen

Code:

DELETE
FROM
TabelleX AS A
WHERE
EXISTS
(
SELECT
NULL
FROM
TabelleX AS B
WHERE
DateValue(B.Timestamp) = DateValue(A.Timestamp)
AND
B.ISIN = A.ISIN
AND
B.TimeStamp < A. TimeStamp)