xy720 opened a new issue #5798:
URL: https://github.com/apache/incubator-doris/issues/5798
**Describe the bug**
A clear and concise description of what the bug is.
**To Reproduce**
Steps to reproduce the behavior:
1. create a table with `hll` `column
```
CREATE TABLE `test_uv` (
`dt` date NULL COMMENT "",
`uv_set` hll HLL_UNION NULL COMMENT ""
) ENGINE=OLAP
AGGREGATE KEY(`dt`)
DISTRIBUTED BY HASH(`dt`) BUCKETS 32
PROPERTIES (
"replication_num" = "1",
);
```
2. insert some data
```
insert into test_uv values ('2021-05-12', hll_hash('YEUSKDF'));
```
3.select
```
select * from test_uv where uv_set = 'ONE STRING' limit 1;
```
**Screenshots**
Be cores
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