xinyiZzz opened a new issue #6343:
URL: https://github.com/apache/incubator-doris/issues/6343
**To Reproduce**
create table:
```
CREATE TABLE `test_table` (
`a` varchar(32) NOT NULL COMMENT ""
) ENGINE=OLAP
DUPLICATE KEY(`a`)
COMMENT "OLAP"
DISTRIBUTED BY HASH(`a`) BUCKETS 2
PROPERTIES (
"replication_num" = "1",
"in_memory" = "false",
"storage_format" = "V2"
);
```
Load twice
```
INSERT INTO test_table (a) VALUES ("aaa"), ("aaa"), ("abc"), ("abc"), (11),
(11), (22);
INSERT INTO test_table (a) VALUES ("aaa"), ("aaa"), ("abc"), ("abc"), (11),
(11), (22);
```
query:
```
select
lead(a,1,null) over(partition by a) as t1,
lag(a,1,null) over(partition by a) as t2
from test_table
```
result:
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