I have two columns that I am pulling and comparing. Signal, Date/Time
Source is a historical log of every-time a Signal has thrown an error in a postgres.
I already have a workflow that grabs the error feed dynamically and sorts it out to techs to respond to said errors. There are, through analysis, several stations that are continually throwing errors. They are known. I filtered them out of the main daily report to techs but also want to have a check to see if they "fix", don't send an error, for X amount of time and then throw an error again that they pop up appropriately.
That way if they do get fixed and then break again we don't ignore them as it may be a new problem not the known issue waiting on a fix.
I've pulled the offending stations into a workflow that then compares them to the historical log. I created a multi-row formula that does a date time difference column and selected only the last "8" days, today plus the previous week.
I want to be able to have an output that is IF today [date time diff 0] is present but no others THEN pass on.
| Station | Date Time | Date Time diff |
| A | 1/13 | 0 |
| A | 1/11 | 2 |
| A | 1/10 | 3 |