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Nov 3, 2025
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docs: remove _row_version from stream metadata #2926

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docs: remove _row_version from stream metadata
BohuTANG Nov 3, 2025
ff0606f
docs: realign stream output samples
BohuTANG Nov 3, 2025
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35 changes: 17 additions & 18 deletions docs/cn/guides/40-load-data/05-continuous-data-pipelines/01-stream.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -241,7 +241,8 @@ INSERT INTO table SELECT * FROM stream;
| \_origin_version | 标识该行最初创建时的表版本。 |
| \_origin_block_id | 标识该行先前所属的数据块 ID。 |
| \_origin_block_row_num | 标识该行在先前所属数据块中的行号。 |
| \_row_version | 标识行版本号，从 0 开始，每次更新递增 1。 |

此前文档中的隐藏列 `_row_version` 已被移除，现已不可用。

要查看这些列的值，可使用 SELECT 语句：

Expand All @@ -254,34 +255,32 @@ SELECT
*,
_origin_version,
_origin_block_id,
_origin_block_row_num,
_row_version
_origin_block_row_num
FROM
t;

┌──────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ a │ _origin_version │ _origin_block_id │ _origin_block_row_num │ _row_version │
├─────────────────┼──────────────────┼──────────────────────────┼───────────────────────┼──────────────┤
│ 1 │ NULL │ NULL │ NULL │ 0 │
│ 2 │ NULL │ NULL │ NULL │ 0 │
└──────────────────────────────────────────────────────────────────────────────────────────────────────┘
┌───────────┬──────────────────┬──────────────────────┬───────────────────────┐
│ a │ _origin_version │ _origin_block_id │ _origin_block_row_num │
├───────────┼──────────────────┼──────────────────────┼───────────────────────┤
│ 1 │ NULL │ NULL │ NULL │
│ 2 │ NULL │ NULL │ NULL │
└───────────┴──────────────────┴──────────────────────┴───────────────────────┘

UPDATE t SET a = 3 WHERE a = 2;
SELECT
*,
_origin_version,
_origin_block_id,
_origin_block_row_num,
_row_version
_origin_block_row_num
FROM
t;

┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ a │ _origin_version │ _origin_block_id │ _origin_block_row_num │ _row_version │
├─────────────────┼──────────────────┼─────────────────────────────────────────┼───────────────────────┼──────────────┤
│ 3 │ 2317 │ 132795849016460663684755265365603707394 │ 0 │ 1 │
│ 1 │ NULL │ NULL │ NULL │ 0 │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
┌───────────┬──────────────────┬─────────────────────────────────────────────┬───────────────────────┐
│ a │ _origin_version │ _origin_block_id │ _origin_block_row_num │
├───────────┼──────────────────┼─────────────────────────────────────────────┼───────────────────────┤
│ 3 │ 2317 │ 132795849016460663684755265365603707394 │ 0 │
│ 1 │ NULL │ NULL │ NULL │
└───────────┴──────────────────┴─────────────────────────────────────────────┴───────────────────────┘
```

### 流专用列
Expand Down Expand Up @@ -450,4 +449,4 @@ WHEN stream_status('activities_stream') AS
ON a.user_id = p.user_id
-- 仅包含 INSERT 类型的变更行
WHERE a.change$action = 'INSERT';
```
```
33 changes: 16 additions & 17 deletions docs/en/guides/40-load-data/05-continuous-data-pipelines/01-stream.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -241,7 +241,8 @@ If this `INSERT` transaction commits, the stream is consumed.
| \_origin_version | Identifies the table version in which this row was initially created. |
| \_origin_block_id | Identifies the block ID to which this row belonged previously. |
| \_origin_block_row_num | Identifies the row number within the block to which this row belonged previously. |
| \_row_version | Identifies the row version, starting at 0 and incrementing by 1 with each update. |

The previously documented hidden column `_row_version` has been removed and is no longer available.

To display the values of these columns, use the SELECT statement:

Expand All @@ -254,34 +255,32 @@ SELECT
*,
_origin_version,
_origin_block_id,
_origin_block_row_num,
_row_version
_origin_block_row_num
FROM
t;

┌──────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ a │ _origin_version │ _origin_block_id │ _origin_block_row_num │ _row_version │
├─────────────────┼──────────────────┼──────────────────────────┼───────────────────────┼──────────────┤
│ 1 │ NULL │ NULL │ NULL │ 0 │
│ 2 │ NULL │ NULL │ NULL │ 0 │
└──────────────────────────────────────────────────────────────────────────────────────────────────────┘
┌───────────┬──────────────────┬──────────────────────┬───────────────────────┐
│ a │ _origin_version │ _origin_block_id │ _origin_block_row_num │
├───────────┼──────────────────┼──────────────────────┼───────────────────────┤
│ 1 │ NULL │ NULL │ NULL │
│ 2 │ NULL │ NULL │ NULL │
└───────────┴──────────────────┴──────────────────────┴───────────────────────┘

UPDATE t SET a = 3 WHERE a = 2;
SELECT
*,
_origin_version,
_origin_block_id,
_origin_block_row_num,
_row_version
_origin_block_row_num
FROM
t;

┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ a │ _origin_version │ _origin_block_id │ _origin_block_row_num │ _row_version │
├─────────────────┼──────────────────┼─────────────────────────────────────────┼───────────────────────┼──────────────┤
│ 3 │ 2317 │ 132795849016460663684755265365603707394 │ 0 │ 1 │
│ 1 │ NULL │ NULL │ NULL │ 0 │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
┌───────────┬──────────────────┬─────────────────────────────────────────────┬───────────────────────┐
│ a │ _origin_version │ _origin_block_id │ _origin_block_row_num │
├───────────┼──────────────────┼─────────────────────────────────────────────┼───────────────────────┤
│ 3 │ 2317 │ 132795849016460663684755265365603707394 │ 0 │
│ 1 │ NULL │ NULL │ NULL │
└───────────┴──────────────────┴─────────────────────────────────────────────┴───────────────────────┘
```

### Stream Columns
Expand Down
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