tidb_decode_key解析不了key?

lindoubled
Thu, 11 Aug 2022 02:21:10 +0000

版本：5.3.0

表结构：

Create Table: CREATE TABLE `t1` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(20) DEFAULT NULL,
  PRIMARY KEY (`id`) /*T![clustered_index] CLUSTERED */
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin AUTO_INCREMENT=90001

show table t1 regions:

MySQL [test]> show table t1 regions\G;
*************************** 1. row ***************************
           REGION_ID: 555259
           START_KEY: t_2906_
             END_KEY: t_2908_
           LEADER_ID: 118969860
     LEADER_STORE_ID: 1
               PEERS: 118224069, 118969860, 259396236
          SCATTERING: 0
       WRITTEN_BYTES: 0
          READ_BYTES: 0
APPROXIMATE_SIZE(MB): 1
    APPROXIMATE_KEYS: 0
1 row in set (0.01 sec)

表中的数据：

MySQL [test]> select * from t1;
+----+------+
| id | name |
+----+------+
|  1 | 1    |
|  2 | 1    |
|  3 | 1    |
|  4 | 1    |
|  5 | 1    |
|  6 | 1    |
|  7 | 1    |
|  8 | 1    |
|  9 | 1    |
+----+------+

问题：

MySQL [test]> select * from information_schema.tikv_region_status where table_name='t1'\G;
*************************** 1. row ***************************
                REGION_ID: 555259
                START_KEY: 748000000000000BFF5A00000000000000F8
                  END_KEY: 748000000000000BFF5C00000000000000F8
                 TABLE_ID: 2906
                  DB_NAME: test
               TABLE_NAME: t1
                 IS_INDEX: 0
                 INDEX_ID: NULL
               INDEX_NAME: NULL
           EPOCH_CONF_VER: 3668
            EPOCH_VERSION: 1705
            WRITTEN_BYTES: 0
               READ_BYTES: 0
         APPROXIMATE_SIZE: 1
         APPROXIMATE_KEYS: 0
  REPLICATIONSTATUS_STATE: NULL
REPLICATIONSTATUS_STATEID: NULL
1 row in set (0.26 sec)

ERROR: No query specified

MySQL [test]> select tidb_decode_key('748000000000000BFF5A00000000000000F8');
+---------------------------------------------------------+
| tidb_decode_key('748000000000000BFF5A00000000000000F8') |
+---------------------------------------------------------+
| 748000000000000BFF5A00000000000000F8                    |
+---------------------------------------------------------+

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