topic Re: How to combine values from stats into single row? in Splunk Search

How to combine values from stats into single row?

TribesmanJohn — Thu, 22 Feb 2024 23:38:53 GMT

Hi All,

I am looking into using some proxy logs to determine download volume for particular streaming sites and was looking for a way to merge hostnames into one "service".

Consider the SPL:

index=proxy url=*.streaming-site.com
| eval megabytes=round(((bytes_in/1024)/1024),2)
| stats sum(megabytes) as Download_MB by url
| sort -Download_MB

Will likely return multiple rows like:

cdn1.streaming-site.com    180.3
cdn2.streaming-site.com    164.8
www.streaming-site.com     12.3

I am wanting to merge those all into one row of

streaming-site.com   357.4

I have played around with the coalesce function, but this would be unsustainable for sites like Netflix which have dozens of URLs associated with them.

If anyone has any suggestions on how I might combine results with say a wildcard (*), I'd love to hear from you!

Re: How to combine values from stats into single row?

richgalloway — Fri, 23 Feb 2024 01:09:05 GMT

The coalesce function selects a field within a single result. To combine (aggregate) multiple results, use the stats command again after modifying the url field.

Re: How to combine values from stats into single row?

TribesmanJohn — Fri, 23 Feb 2024 01:38:57 GMT

Thanks for this! 🙂

More tweaking required on my part as some of the subdomains being evaluated have more than 3 levels, but this is a big help in getting me on the right track!