About sort field of non-aggregation table sql statement

[interma]

In https://github.com/baidu/palo/blob/master/README.md:

In non-aggregation type of table, columns are not distinguished between dimensions and metrics, but should specify the sort columns in order to sort all rows. Palo will sort the table data according to the sort columns without any aggregation. The following figure gives an example of creating non-aggregation table.

-- Create non-aggregation table --
CREATE TABLE example_tbl (
    `date`      DATE,
    id          BIGINT,
    country     VARCHAR(32),
    click       BIGINT,
    cost        BIGINT
) DUPLICATE KEY(`date`, id, country)
DISTRIBUTED BY HASH(id) BUCKETS 32;

should specify the sort columns in order to sort all rows

Question:
where is the sort column in sql statement? I assumed it should be like:
date DATE Sort,
right? Is there something missing?

[imay]

DUBPLICATE KEY is sort key, so data will sorted by (date, id, country)

[interma]

@imay thanks, clearly.

PS:
As we talked in wechat group, you can give a question label to this issue.

[imay]

thanks for advise