I need to extract the first and the last dates of a period to use to filter the values of a lookup table containing a list of dates.
I have to do this because, in addition to the Timestamp, I also have to search events by indextime and put these dates in a drop-down list, but I cannot load the list at search-time because there are too many events, so I loaded the list in a lookup (updated every night). However, in my forms, I have to correlate this list to the Time period.
I cannot use head and tail commands because I have too many events (head command is fast, but tail is very slow!)
Is it possible to extract dates from the earliest and latest values?
Thank you.
Giuseppe
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