LoadConfig

class google_pandas_load.load_config.LoadConfig(source, destination, data_name=None, query=None, dataframe=None, write_disposition='WRITE_TRUNCATE', dtype=None, parse_dates=None, infer_datetime_format=True, date_cols=None, timestamp_cols=None, bq_schema=None)

Bases: object

Configuration for a load job.

This class has the same parameters as google_pandas_load.loader.Loader.load(). It is used to launch simultaneously load jobs as follows:

• A list of LoadConfig is built.

• The list is passed to google_pandas_load.loader.Loader.mload().

static bq_schema_inferred_from_dataframe(dataframe, date_cols=None, timestamp_cols=None)

Return a BigQuery schema that is inferred from a pandas dataframe.

In BigQuery, a column is given its type according to the following rule:

• if its name is listed in the date_cols parameter, its type in BigQuery should be DATE.

• elif its name is listed in the timestamp_cols parameter, its type in BigQuery should be TIMESTAMP.

• elif its pandas dtype is equal to numpy.bool, its type in BigQuery is BOOLEAN.

• elif its pandas dtype has numpy.integer dtype as ancestor, its type in BigQuery is INTEGER.

• elif its pandas dtype has numpy.floating dtype as ancestor, its type in BigQuery is FLOAT.

• else its type in BigQuery is STRING.

Parameters

• dataframe (pandas.DataFrame) – The dataframe.

• date_cols (list of str, optional) – The names of the columns receiving the BigQuery type DATE.

• timestamp_cols (list of str, optional) – The names of the columns receiving the BigQuery type TIMESTAMP.

Returns

A BigQuery schema.

Return type

list of google.cloud.bigquery.schema.SchemaField