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[FLINK-36681][mysql-cdc][doc] Fix the wrong chunks splitting query in incremental snapshot reading section #3703

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Merged
leonardBang merged 1 commit into from
Nov 12, 2024
Merged

[FLINK-36681][mysql-cdc][doc] Fix the wrong chunks splitting query in incremental snapshot reading section #3703

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2 changes: 1 addition & 1 deletion docs/content.zh/docs/connectors/flink-sources/mysql-cdc.md
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Expand Up @@ -581,7 +581,7 @@ MySQL CDC Source 使用主键列将表划分为多个分片（chunk）。 默认
[100, +∞)
```

对于其他主键列类型， MySQL CDC Source 将以下形式执行语句： `SELECT MAX(STR_ID) AS chunk_high FROM (SELECT * FROM TestTable WHERE STR_ID > 'uuid-001' limit 25)` 来获得每个区块的低值和高值，
对于其他主键列类型， MySQL CDC Source 将以下形式执行语句： `SELECT MAX(STR_ID) AS chunk_high FROM (SELECT * FROM TestTable WHERE STR_ID > 'uuid-001' ORDER BY STR_ID ASC LIMIT 25)` 来获得每个区块的低值和高值，
分割块集如下所示：

```
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2 changes: 1 addition & 1 deletion docs/content/docs/connectors/flink-sources/mysql-cdc.md
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Expand Up @@ -612,7 +612,7 @@ and the table option `scan.incremental.snapshot.chunk.size` value is `25`, the t
[100, +∞)
```

For other primary key column type, MySQL CDC Source executes the statement in the form of `SELECT MAX(STR_ID) AS chunk_high FROM (SELECT * FROM TestTable WHERE STR_ID > 'uuid-001' limit 25)` to get the low and high value for each chunk,
For other primary key column type, MySQL CDC Source executes the statement in the form of `SELECT MAX(STR_ID) AS chunk_high FROM (SELECT * FROM TestTable WHERE STR_ID > 'uuid-001' ORDER BY STR_ID ASC LIMIT 25)` to get the low and high value for each chunk,
the splitting chunks set would be like:

```
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