I've exported the Google Firebase events raw data to the Google BigQuery. Each event has four key: name
, params
, timestamp_micros
, previous_timestamp_micros
. As a example, I past a session_start
event below which is extracted from my data
"event_dim":[
{"name":"session_start",
"params":[
{"key":"firebase_event_origin",
"value":{"string_value":"auto"}}],
"timestamp_micros":"1467374617058000",
"previous_timestamp_micros":"1467191135684000"}, ...]
What's the meaning of the key previous_timestamp_micros
? Is it the timestamp of the previous session_start
of the same user? Or is it the timestamp of a previous event of the same user? I've checked the data, it seems both guesses are incorrect.