Query OK, 0 rows affected (0.02 sec)
obclient> create table t1(id bigint not null primary key, gmt_create datetime not null default current_timestamp);
Query OK, 0 rows affected (0.09 sec)
obclient> insert into t1(id) values(1),(2),(3);
Query OK, 3 rows affected (0.02 sec)
Records: 3  Duplicates: 0  Warnings: 0
obclient> select * from t1;
+----+---------------------+
| ID | GMT_CREATE          |
|  2 | 2020-02-28 09:47:07 |
|  3 | 2020-02-28 09:47:07 |
+----+---------------------+
3 rows in set (0.00 sec)
obclient> drop table t1;
Query OK, 0 rows affected (0.03 sec)
obclient> show recyclebin\G
*************************** 1. row ***************************
  OBJECT_NAME: __recycle_$_20200102_1585650066255592
ORIGINAL_NAME: t1
1 row in set (0.03 sec)
obclient> flashback table __recycle_$_20200102_1585650066255592 to before drop rename to t1;
Query OK, 0 rows affected (0.02 sec)
obclient> select * from t1;
+----+---------------------+
| ID | GMT_CREATE          |
+----+---------------------+
|  1 | 2020-02-28 09:47:07 |
|  2 | 2020-02-28 09:47:07 |
|  3 | 2020-02-28 09:47:07 |