sduzh opened a new issue #3865:
URL: https://github.com/apache/incubator-doris/issues/3865
**Describe the bug**
Incorrect result of natural join.
**To Reproduce**
```SQL
CREATE TABLE t0(c0 int)DUPLICATE KEY(c0) DISTRIBUTED BY HASH(c0) BUCKETS 1
PROPERTIES("replication_num"="1");
CREATE TABLE t1(c0 int)DUPLICATE KEY(c0) DISTRIBUTED BY HASH(c0) BUCKETS 1
PROPERTIES("replication_num"="1");
insert into t0 values(1),(2);
insert into t1 values(1),(2);
select * from t0 natural join t1;
```
**Expected behavior**
```
+------+
| c0 |
+------+
| 1 |
| 2 |
+------+
```
**Real behavior**
```
+------+------+
| c0 | c0 |
+------+------+
| 1 | 1 |
| 1 | 2 |
| 2 | 1 |
| 2 | 2 |
+------+------+
```
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