Each unique assignment for an experiment to a subject is logged and persistently used any time that subject is encountered again in the future. This view becomes the foundation for all experimentation reporting.
Unique ID for the assignment. This is a KSUID that is sorted automatically by time.
string
subject_id
ID of the subject that given the assignment. Note that this lacks context of the actual subject type used. That will need to be done via a JOIN on the experiments table, if required.
string
experiment_id
Experiment ID
string
variant_id
ID for the variant that was assigned.
string
cohort_index
Index for the active cohort at the time of assignment (the cohort the subject is in).
int
created_at
Timestamp of when the assignment was made. ISO8601 format.