Google BigQuery Delete Rows?

2016 update: BigQuery can delete and update rows now -- Fh

https://cloud.google.com/bigquery/docs/reference/standard-sql/dml-syntax

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Thanks for describing your use case. BigQuery is append-only by design. We currently don't support deleting single rows or a batch of rows from an existing dataset.

Currently, to implement a "rotating" log system you must either: 1. Create a new table each day (and delete older tables if that is necessary) 2. Append your data to a table and query by time/date

I would actually recommend creating a new table for each day. Since BigQuery charges by amount of data queried over, this would be most economical for you, rather than having to query over entire massive datasets every time.

By the way - how are you currently collecting your data?

For deleting records in Big query, you have to first enable standard sql.

Steps for enabling Standard sql

1. Open the BigQuery web UI.
2. Click Compose Query.
3. Click Show Options.
4. Uncheck the Use Legacy SQL checkbox.

This will enable the the BigQuery Data Manipulation Language (DML) to update, insert, and delete data from the BigQuery tables

Now, you can write the plain SQL query to delete the record(s)

DELETE [FROM] target_name [alias] WHERE condition

You can refer: https://cloud.google.com/bigquery/docs/reference/standard-sql/dml-syntax#delete_statement