spena opened a new pull request, #25401:
URL: https://github.com/apache/flink/pull/25401
## What is the purpose of the change
This PR allows you to use CTAS to reorder the columns defined in the
`SELECT` part by specifying all column names without data types in the `CREATE`
part. This feature is equivalent to the `INSERT INTO` statement.
Example:
```sql
CREATE TABLE my_ctas_table (
order_time, price, quantity, id
) WITH (
'connector' = 'kafka',
...
) AS SELECT id, price, quantity, order_time FROM source_table;
```
The resulting table `my_ctas_table` will be equivalent to create the
following table and insert the data with the following statement:
```
CREATE TABLE my_ctas_table (
order_time TIMESTAMP(3),
price DOUBLE,
quantity DOUBLE,
id BIGINT
) WITH (
'connector' = 'kafka',
...
);
INSERT INTO my_ctas_table (order_time, price, quantity, id)
SELECT id, price, quantity, order_time FROM source_table;
```
## Verifying this change
This change added tests and can be verified as follows:
- Added unit tests and integration tests to verify the feature
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? yes
- If yes, how is the feature documented? Updated the `create.md`
documentation
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