Changed the default setting for TYPE_INFERENCE_SAMPLE_ROWS to None, allowing type and nullability inference to consider all rows in a SAS file. This adjustment ensures accurate handling of null values and integer ranges, addressing issues observed in production with large datasets. Updated documentation to reflect the implications of this change and the risks associated with using an integer cap for sampling.
Introduce generate_sample_folder.py to create a test folder with clustered SAS XPORT files, including configurations for schema compatibility checks. Implement load_folder.py to facilitate loading entire directories of SAS files into Postgres, supporting explicit and auto-detect clustering. Update sample_folder_config.yaml for usage examples and configuration structure. Enhance load_sas.py with a public schema compatibility check function for orchestrators.
