Renaming column names(field value) in a search result

[nitin_gurram]

We have a test index which captures all the response times of different transactions by version

I wrote a search to display different response times by different transactions and version

index=testing test_type=CI  test_function="ok.pct90" | chart avg(transaction_RT_val) AS "90%_RT" by transaction, version

I want to write to show the difference in response time between every version (Version numbers keep on changing every time)

Maybe some thing like this but the problem with this one is the version number always change

index=testing test_type=CI  test_function="ok.pct90" | chart avg(transaction_RT_val) AS "90%_RT" by transaction,version | rename "99864.0.0" as Test1, "99867.0.0" as Test2 , "99868.0.0" as Test3 | eval Change1 = ((Test2-Test1)/Test2*100) | eval  Change2 = ((Test3-Test2)/Test3*100) | fields transaction, Change1, Change2

Preferably I want to filter the results to show a maximum of last 5 versions

[somesoni2]

Try something like this (this is assuming that a version is available for all transactions)

Update
I must've goofed up while pasting the answer. Here is the full search.

Assumption: Every transaction has events for all versions. Version is in format major.minor.build

index=testing test_type=CI  test_function="ok.pct90" | stats avg(transaction_RT_val) as transaction_RT_val by transaction,version | rex field=version "(?<major>\d+)\.(?<minor>\d+)\.(?<build>\d+)" | sort transaction major minor build | streamstats count as sno by transaction | eval version="Test".tostring(sno)  | chart avg(transaction_RT_val) AS "90%_RT" by transaction,version | eval Change1 = ((Test2-Test1)/Test2*100) | eval  Change2 = ((Test3-Test2)/Test3*100) | eval Change3 = ((Test4-Test3)/Test4*100) | eval  Change4 = ((Test5-Test4)/Test5*100) | fields transaction, Change*

[nitin_gurram]

Hi! you almost wrote the same query that I wrote
I got Test1,Test2 , Test3 by renaming version numbers those fields do not exist. note that version numbers are changing and they are not constants so I can't rename them