[GitHub] [druid] sthetland commented on a change in pull request #9317: ANY Aggregator should not skip null values implementation

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sthetland commented on a change in pull request #9317: ANY Aggregator should not skip null values implementation
URL: https://github.com/apache/druid/pull/9317#discussion_r377814677
 
 

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 File path: docs/querying/sql.md
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 @@ -205,7 +205,7 @@ Only the COUNT aggregation can accept DISTINCT.
 |`EARLIEST(expr, maxBytesPerString)`|Like `EARLIEST(expr)`, but for strings. The `maxBytesPerString` parameter determines how much aggregation space to allocate per string. Strings longer than this limit will be truncated. This parameter should be set as low as possible, since high values will lead to wasted memory.|
 |`LATEST(expr)`|Returns the latest value of `expr`, which must be numeric. If `expr` comes from a relation with a timestamp column (like a Druid datasource) then "latest" is the value last encountered with the maximum overall timestamp of all values being aggregated. If `expr` does not come from a relation with a timestamp, then it is simply the last value encountered.|
 |`LATEST(expr, maxBytesPerString)`|Like `LATEST(expr)`, but for strings. The `maxBytesPerString` parameter determines how much aggregation space to allocate per string. Strings longer than this limit will be truncated. This parameter should be set as low as possible, since high values will lead to wasted memory.|
-|`ANY_VALUE(expr)`|Returns any value of `expr`, which must be numeric. If `druid.generic.useDefaultValueForNull=true` this can return the default value for null and does not prefer "non-null" values over the default value for null. If `druid.generic.useDefaultValueForNull=false`, then this will return any non-null value of `expr`|
+|`ANY_VALUE(expr)`|Returns any value of `expr`, which must be numeric. If `druid.generic.useDefaultValueForNull=true` this can return the default value for null and does not prefer "non-null" values over the default value for null. If `druid.generic.useDefaultValueForNull=false`, then this will return any value of `expr` including null|
 
 Review comment:
   nit, adding a comma: "If `druid.generic.useDefaultValueForNull=true`, this can return..."

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