reference/system-databases: add description for TIDB_ROW_ID_SHARDING_INFO
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lilin90
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Feb 12, 2020
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| * `TiDB_TABLE_ID`：标识表的内部 ID，该 ID 在一个 TiDB 集群内部唯一。 | ||
| * `TIDB_ROW_ID_SHARDING_INFO`：标识表的 Sharding 类型，可能的值为： | ||
| - `"NOT_SHARDED"`：表未被 Shard。 | ||
| - `"NOT_SHARDED(PK_IS_HANDLE)"`：一个定义了整型主键的表未被 Shard。 | ||
| - `"PK_AUTO_RANDOM_BITS={bit_number}"`：一个定义了整型主键的表由于定义了 `AUTO_RANDOM` 而被 Shard。 | ||
| - `"SHARD_BITS={bit_number}"`：表使用 `SHARD_ROW_ID_BITS={bit_number}` 进行了 Shard。 |
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Please remove extra spaces at the beginning of line 483~484, and use four-indentation for the 4 subitems. Then the lint failure will be fixed.
tangenta
reviewed
Feb 18, 2020
| - `"NOT_SHARDED"`：表未被 Shard。 | ||
| - `"NOT_SHARDED(PK_IS_HANDLE)"`：一个定义了整型主键的表未被 Shard。 | ||
| - `"PK_AUTO_RANDOM_BITS={bit_number}"`：一个定义了整型主键的表由于定义了 `AUTO_RANDOM` 而被 Shard。 | ||
| - `"SHARD_BITS={bit_number}"`：表使用 `SHARD_ROW_ID_BITS={bit_number}` 进行了 Shard。 |
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How about NULL?
nil: for tables that are not suitable(views, system tables).
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lilin90
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Feb 19, 2020
djshow832
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| @@ -477,6 +478,16 @@ SHOW TABLES | |||
| [LIKE 'wild'] | |||
| ``` | |||
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| 表中的信息大部分定义自 MySQL，此外有两列是 TiDB 新增的： | |||
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| * `TiDB_TABLE_ID`：标识表的内部 ID，该 ID 在一个 TiDB 集群内部唯一。 | |||
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Suggested change
| * `TiDB_TABLE_ID`：标识表的内部 ID，该 ID 在一个 TiDB 集群内部唯一。 | |
| * `TIDB_TABLE_ID`：标识表的内部 ID，该 ID 在一个 TiDB 集群内部唯一。 |
lilin90
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What is changed, added or deleted?
Add description for the new
TIDB_ROW_ID_SHARDING_INFOcolumn ininformation_schema.tablestable.What is the related PR or file link(s)?
Reference link(s):infoschema: add
TIDB_ROW_ID_SHARDING_INFOfortabletable. tidb#13418 and infoschema: updateinformation_schema.tablesto support AUTO_RANDOM. tidb#14583This PR is to align with:
N/A (not applicable)
Which TiDB version(s) does your changes apply to?
Note: If your changes apply to multiple TiDB versions, make sure you update the documents in the corresponding version folders such as "dev", "v3.0", "v2.1" and "v3.1" in this PR.