Comparing individual values with the past average

[MidnightRun]

I have a search query that looks like this:

index="myindex" sourcetype="mysource" earliest=@d latest=now  
| append [ search index="myindex" sourcetype="mysource" earliest=-1mon@mon latest=@mon 
| stats avg(Price) as past_avg by ID ] 
| stats values(*) as * by ID
| table Date, ID, Price, past_avg

This gives me:

Screenshot_1.png

what I'm trying to do is display only those values in the Price column that are smaller then past_avg,  does anyone know how I could achieve that?

[ITWhisperer · Accepted solution]

You could use mvfilter - the problem with this is that you can only reference the mv field, so you could concatenate the average, then in the filter split the two parts for the comparison, then remove the average

| eval price=mvmap(price,price."|".past_avg)
| eval price=mvfilter(mvindex(split(price,"|"),0)<mvindex(split(price,"|"),1))
| eval price=mvmap(price,mvindex(split(price,"|"),0))

Alternatively, you could do the comparison before the stats

| eventstats values(past_avg) as past_avg by id
| where price < past_avg
| stats values(*) as * by id