In response to John :
> Thanks - the sessionid's in fact do match. It's just that I can have more
> than two (2) classes per sessionid. So mytable might look like:
> select * from mytable
> 1 2009/01/01 2101
> 2 2009/01/02 2101
> 3 2009/02/05 2101
> 4 2009/02/15 2101
> 5 2009/02/25 2101
Can you show/explain, which rows in your example contains now the values
for the new row?
Regards, Andreas
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Andreas Kretschmer
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