kangkaisen opened a new issue #2976: [Proposal] Select * support HLL and Bitmap column URL: https://github.com/apache/incubator-doris/issues/2976 ## Why Currently, select * doesn't support HLL and Bitmap column. 1. Which isn't compatible with tableau or navicat ... mysql tool and BI tools. 2. Which isn't friendly for user.   ## How 1. return null for HLL and Bitmap column when select * 2. Directly return HLL and bitmap binary content when select * 3. Rewrite the sql and return cardinality of HLL or bitmap when select * 4. Rewrite the sql and return to_string of HLL or bitmap when select * I prefer to solution 3: **Rewrite the sql and return cardinality of HLL or bitmap when select**
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