imay commented on issue #4782:
URL:
https://github.com/apache/incubator-doris/issues/4782#issuecomment-716936716
> The uniq-model documentation had a syntax error in unique key('user_id',
'username')
If you want to change username, you should create a table like
```
CREATE TABLE `test_unique` (
user_id int,
username varchar(64)
) ENGINE=OLAP
UNIQUE KEY(`user_id`)
DISTRIBUTED BY HASH(`user_id`) BUCKETS 1
PROPERTIES (
"replication_num" = "1"
);
```
insert one row by "insert into test_unique values (1, "hello");"
Then you can change 'username' by insert a new row to overwrite the old one,
such as "insert into test_unique values (1, "world");"
Then the user name is changed to "world"
> I am going to submit a request to add update table support.
I think supporing update is complicated operation. Can you give us some
detail about your change?
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