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How to get a percentage of time where String_Tag = "ON"?

Question asked by TomAb on Nov 27, 2016
Latest reply on Nov 28, 2016 by TomAb


I would like to know how much time in seconds/percents the tag has "ON" value every hour.

Please write down the query in the format of linked server in SQL (like  Select * from OPENQUERY(PI,.....))


Thank you,