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FAQ update (#2111)

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* FAQ update: how downsampling and deduplication will work at the same time

* Update docs/FAQ.md

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
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Denys Holius 2022-01-27 20:35:16 +02:00 committed by Aliaksandr Valialkin
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@ -356,3 +356,7 @@ There could be a slight difference in stored values for time series. Due to diff
The query engine may behave differently for some functions. Please see [this article](https://medium.com/@romanhavronenko/victoriametrics-promql-compliance-d4318203f51e).
## If downsampling and deduplication are enabled how will this work?
[Deduplication](https://docs.victoriametrics.com/#deduplication) is a special case of zero-offset [downsampling](https://docs.victoriametrics.com/#downsampling). So, if both downsampling and deduplication are enabled, then deduplication is replaced by zero-offset downsampling