[GitHub] [druid] FrankChen021 commented on a change in pull request #11896: Document expression post-aggregators

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FrankChen021 commented on a change in pull request #11896:
URL: https://github.com/apache/druid/pull/11896#discussion_r754274895



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File path: docs/querying/post-aggregations.md
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@@ -42,6 +42,7 @@ Supported functions are `+`, `-`, `*`, `/`, and `quotient`.
 
 * `/` division always returns `0` if dividing by`0`, regardless of the numerator.
 * `quotient` division behaves like regular floating point division
+* Arithemtic post-aggregators always use floating point arithmetic.

Review comment:
       ```suggestion
   * Arithmetic post-aggregators always use floating point arithmetic.
   ```




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