[GitHub] [druid] rohangarg commented on a change in pull request #11949: Specify time column for first/last aggregators

[GitBox <gi...@apache.org>]

rohangarg commented on a change in pull request #11949:
URL: https://github.com/apache/druid/pull/11949#discussion_r754997651



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File path: docs/querying/aggregations.md
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@@ -143,101 +143,111 @@ Note that queries with first/last aggregators on a segment created with rollup e
 
 #### `doubleFirst` aggregator
 
-`doubleFirst` computes the metric value with the minimum timestamp or 0 in default mode, or `null` in SQL-compatible mode if no row exists.
+`doubleFirst` computes the metric value with the minimum value for time column or 0 in default mode, or `null` in 

Review comment:
       fixed




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