information-schema: update the description for the tikv-region-status…

… table (#17689)

information-schema/information-schema-tikv-region-status.md

@@ -11,13 +11,13 @@ The `TIKV_REGION_STATUS` table shows some basic information of TiKV Regions via
 >
 > This table is not available on [TiDB Serverless](https://docs.pingcap.com/tidbcloud/select-cluster-tier#tidb-serverless) clusters.
 
-{{< copyable "sql" >}}
-
 ```sql
-USE information_schema;
-DESC tikv_region_status;
+USE INFORMATION_SCHEMA;
+DESC TIKV_REGION_STATUS;
 ```
 
+The output is as follows:
+
 ```sql
 +---------------------------+-------------+------+------+---------+-------+
 | Field                     | Type        | Null | Key  | Default | Extra |
@@ -31,6 +31,9 @@ DESC tikv_region_status;
 | IS_INDEX                  | tinyint(1)  | NO   |      | 0       |       |
 | INDEX_ID                  | bigint(21)  | YES  |      | NULL    |       |
 | INDEX_NAME                | varchar(64) | YES  |      | NULL    |       |
+| IS_PARTITION              | tinyint(1)  | NO   |      | 0       |       |
+| PARTITION_ID              | bigint(21)  | YES  |      | NULL    |       |
+| PARTITION_NAME            | varchar(64) | YES  |      | NULL    |       |
 | EPOCH_CONF_VER            | bigint(21)  | YES  |      | NULL    |       |
 | EPOCH_VERSION             | bigint(21)  | YES  |      | NULL    |       |
 | WRITTEN_BYTES             | bigint(21)  | YES  |      | NULL    |       |
@@ -40,7 +43,7 @@ DESC tikv_region_status;
 | REPLICATIONSTATUS_STATE   | varchar(64) | YES  |      | NULL    |       |
 | REPLICATIONSTATUS_STATEID | bigint(21)  | YES  |      | NULL    |       |
 +---------------------------+-------------+------+------+---------+-------+
-17 rows in set (0.00 sec)
+20 rows in set (0.00 sec)
 ```
 
 The descriptions of the columns in the `TIKV_REGION_STATUS` table are as follows:
@@ -54,6 +57,9 @@ The descriptions of the columns in the `TIKV_REGION_STATUS` table are as follows
 * `IS_INDEX`: Whether the Region data is an index. 0 means that it is not an index, while 1 means that it is an index. If the current Region contains both table data and index data, there will be multiple rows of records, and `IS_INDEX` is 0 and 1 respectively.
 * `INDEX_ID`: The ID of the index to which the Region belongs. If `IS_INDEX` is 0, the value of this column is NULL.
 * `INDEX_NAME`: The name of the index to which the Region belongs. If `IS_INDEX` is 0, the value of this column is NULL.
+* `IS_PARTITION`: Whether the table to which the Region belongs is partitioned.
+* `PARTITION_ID`: If the table to which the Region belongs is partitioned, this column displays the ID of the partition to which the Region belongs.
+* `PARTITION_NAME`: If the table to which the Region belongs is partitioned, this column displays the name of the partition to which the Region belongs.
 * `EPOCH_CONF_VER`: The version number of the Region configuration. The version number increases when a peer is added or removed.
 * `EPOCH_VERSION`: The current version number of the Region. The version number increases when the Region is split or merged.
 * `WRITTEN_BYTES`: The amount of data (bytes) written to the Region.