Reusing the existing/previously discovered log patterns?

[nazarewk]

I'm trying the logparser as my first attempt at analyzing logs, so I'm not sure what to expect and what is the primary purpose of such log analysis tools.

I am primarily processing independent batches of client apps' logs (usually short and with only partial set of patterns). I have joined all that I have received into a single file to parse with Drain3 for a great result, but I am wondering whether it's possible to reuse previously computed outputs/patterns when parsing new logfiles?