Yes, sorry; The date ranges can overlap each other. The search sub just returns when it find the first match of a date in any range.

My example should have shown this.

The ranges are more like this: 

2018-03-05 06:00:00 -> 2018-03-06 01:00:00
2018-03-05 06:00:00 -> 2018-03-06 02:00:00
2018-03-05 06:00:00 -> 2018-03-06 03:00:00
2018-03-05 06:00:00 -> 2018-03-06 04:00:00
2018-03-05 06:00:00 -> 2018-03-06 05:00:00
2018-03-05 06:00:00 -> 2018-03-06 06:00:00

2018-03-06 06:00:00 -> 2018-03-06 07:00:00
2018-03-06 06:00:00 -> 2018-03-06 08:00:00

2018-03-06 06:00:00 -> 2018-03-06 10:00:00
2018-03-06 06:00:00 -> 2018-03-06 11:00:00
2018-03-06 06:00:00 -> 2018-03-06 12:00:00
2018-03-06 06:00:00 -> 2018-03-06 13:00:00

[download]

It is of operational assumption given the above set of ranges (notice 06:00 -> 09:00 is missing which happens often) that we are "normally" processing hour 13 (06:00 -> 14:00 but that is no guarantee ... (Around 6:30 am the log is rotated so the range stars over ...)

If my next load is from 08:00 -> 09:00 then I can skip loading the dates that are already loaded in the 06:00 -> 10:00 data set.

I know, complicated ...

In reply to Re^4: search through hash for date in a range by bfdi533
in thread search through hash for date in a range by bfdi533

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