How to query for data in streaming buffer ONLY in BigQuery?

Question

We have a table partitioned by day in BigQuery, which is updated by streaming inserts.

The doc says that: \"when streaming to a partitioned table, data in the strea

Answer 1

Data in the streaming buffer has a NULL value for the _PARTITIONTIME column.

SELECT
  fields
FROM
  `dataset.partitioned_table_name`
WHERE
  _PARTITIONTIME IS NULL

https://cloud.google.com/bigquery/docs/partitioned-tables#copying_to_partitioned_tables