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doris/fe
Xujian Duan af7b16f213 [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>
2024-05-22 10:03:31 +08:00
..

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# fe-common

This module is used to store some common classes of other modules.

# spark-dpp

This module is Spark DPP program, used for Spark Load function.
Depends: fe-common

# fe-core

This module is the main process module of FE.
Depends: fe-common, spark-dpp