Update kvstore based on recalculated metrics?

[sgtlongwell]

I have a kvstore like below populated with about 1mil rows. 

_key	name	count1	count2	calculated_number1	calculated_number2
sha256 hash	Joe Cool	1	2	3	4

How can I update the kvstore where I update the two counts and recalculate the two calculated numbers based on the newly updated counts? I am trying not to read in all 1 million rows and overwrite if I dont have to. 

Any potential pathways are welcome and I am here to learn. Thank you all. 

[bowesmana]

With a kvstore, outputlookup command will replace the existing entry as long as you supply the original _key variable - it will not overwrite other rows if you use append=t, see example 6 here

https://docs.splunk.com/Documentation/Splunk/8.2.7/SearchReference/Outputlookup#Examples