data table delete rows after time

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Badr Sahib
Badr Sahib 2017-4-7
评论： Peter Perkins 2017-4-12
I have a largeData as table (imported from oracle database). The first column is timestamp (date and time). How can I delete certain lines after time (timestamp). I want to delete the night data, between 22h and 5h. Or can I change what in SQL command? ...FROM "LOGDATEN".DATENLOGGER_SHA WHERE DATUM >= to_date(''2016-07-01'',''yyyy-MM-dd'') AND DATUM < to_date(''2016-08-01'',''yyyy-MM-dd'')order by datum asc']) thanks for your help
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Peter Perkins
Peter Perkins 2017-4-12
Badr, you're going to need to provide a short example so that people can see what you mean by "table" and "timestamp (date and time)".

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回答（1 个）

Sid Jhaveri
Sid Jhaveri 2017-4-10
If you would like to do this processing in MATLAB after you have imported the data as a table, you can use " isbetween " function for creating a logical array which states which datetime entry meets the criteria. You can then filter your table by using this logical array.

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