clintropolis commented on code in PR #15455:
URL: https://github.com/apache/druid/pull/15455#discussion_r1410215929


##########
docs/querying/filters.md:
##########
@@ -450,6 +450,43 @@ Note that it is often more optimal to use a like filter 
instead of a regex for s
 { "type": "regex", "dimension": "someColumn", "pattern": ^50.* }
 ```
 
+## Array contains element filter
+
+The `arrayContainsElement` filter is for checking if an `ARRAY` contains a 
specific element, but can match against any type of column with scalar columns 
being treated as single element arrays.
+
+| Property | Description | Required |
+| -------- | ----------- | -------- |
+| `type` | Must be "arrayContainsElement".| Yes |
+| `column` | Input column or virtual column name to filter. | Yes |

Review Comment:
   this matches all of the other tables in the page.. i guess i can update all 
of the tables... again :p



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