add_column() method does not have documentation for SingleTableMetadata and MultiTableMetadata

[R-Palazzo]

There is no documentation for the add_column method for the SingleTableMetadata and MultiTableMetadata.

[npatki]

This feature is not officially supported in the SDV library and therefore was not included in the documentation.

In practice, we only see this being used for creating dummy/demo datasets and there is another method load_from_dict that can be used to achieve the same effect.

# current usage that we see
metadata = SingleTableMetadata()
metadata.add_column(
  'A',
  sdtype='numerical'
)

# recommended method
metadata = SingleTableMetadata.load_from_dict({
  'columns': {
    'A': { 'sdtype': 'numerical' }
  }
})

Alternatively, if you wish to add a new column ad-hoc (eg. if your schema has changed), you can:

• Go into the metadata JSON file and change it
• Auto-detect metadata again from the updated data