[optimize](desc) display the correct data type of aggStateType (#34968)
If a table column is AGG_STATE type, we can't get the clear defined data type if we use `desc tbl` statement.
create table a_table(
k1 int null,
k2 agg_state<max_by(int not null,int)> generic,
k3 agg_state<group_concat(string)> generic
)
aggregate key (k1)
distributed BY hash(k1) buckets 3
properties("replication_num" = "1");
before optimize:
mysql> desc a_table;
+-------+------------------------------------------------+------+-------+---------+---------+
| Field | Type | Null | Key | Default | Extra |
+-------+------------------------------------------------+------+-------+---------+---------+
| k1 | INT | Yes | true | NULL | |
| k2 | org.apache.doris.catalog.AggStateType@239f771c | No | false | NULL | GENERIC |
| k3 | org.apache.doris.catalog.AggStateType@2e535f50 | No | false | NULL | GENERIC |
+-------+------------------------------------------------+------+-------+---------+---------+
3 rows in set (0.00 sec)
after optimize:
mysql> desc a_table;
+-------+------------------------------------+------+-------+---------+---------+
| Field | Type | Null | Key | Default | Extra |
+-------+------------------------------------+------+-------+---------+---------+
| k1 | INT | Yes | true | NULL | |
| k2 | AGG_STATE<max_by(INT, INT NULL)> | No | false | NULL | GENERIC |
| k3 | AGG_STATE<group_concat(TEXT NULL)> | No | false | NULL | GENERIC |
+-------+------------------------------------+------+-------+---------+---------+
Co-authored-by: duanxujian <duanxujian@jd.com>
af7b16f213