retrieve_data_by_element¶
- DatabaseStorageManager.retrieve_data_by_element(element_key, columns=None, chunksize=None)[source]¶
Retrieves data from storage element as whole or in chunks.
- Parameters
element_key – Target storage element
columns – Target columns of table to retrieve
chunksize – Size of chunks to split retrieval or None to retrieve as whole.
- Returns
- Return type
Depends on input parameters. If chunked the return generator, if not then depends on type of storage element.