Fetch the Primary Keys of an Event
| Definition: | getPrimaryKeyFields() → List[str] |
| Description: | Retrieves the primary keys from an Event. |
| Parameters: | This method does not take any arguments. |
| Returns: | An array of strings containing the primary key for the Event. |
The following script fetches the list of properties that are primary keys in the Event:
from io.hevo.api import Event
def transform(event):
# Fetches the current set of primary keys for a given record
<existing_primary_keys> = event.getPrimaryKeyFields()
return event
Sample Transformation
The following script demonstrates how this method can be used. It:
-
Retrieves the primary key for the Event.
-
Adds it to the Event as a property called
existing_pk_fields.
from io.hevo.api import Event
def transform(event):
# Fetches the current set of primary keys for a given record
pk_fields = event.getPrimaryKeyFields()
properties = event.getProperties()
properties['existing_pk_fields'] = pk_fields
return event
Sample Output
The Transformation adds the list of primary key fields for the Event as a new property called existing_pk_fields.
Last updated on May 30, 2023