GENERATE_SYNTHETIC_DATA：输出中联接键列类型变更¶

Attention

This behavior change is in the 2025_01 bundle.

For the current status of the bundle, refer to Bundle History.

When this behavior change bundle is enabled, any string columns that you have designated as join keys in GENERATE_SYNTHETIC_DATA will be generated as UUID strings:

Before the change:: Join keys (columns listed in the columns field with join_key=True in GENERATE_SYNTHETIC_DATA) are generated as simple numeric strings in the output data.
After the change:: 联接键采用 UUID 格式。

参考：1868