Can transforms drop certain groups?

Is it possible to instruct a transform to ignore certain groups based on some aggregation results?
Say we have an ecommerce and we want to track the time-to-buy, grouped by session-id. We have records for first access and for actual sale.
Most users don't end up buying, and I don't want my new index to be full of null values.


transforms can feed into an ingest pipeline, you can use the drop processor to prevent documents from getting indexed based on a condition, e.g. a field value.

Hope that helps.

Got it, thanks!

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