GBQ: rewrite table with a POST request

Question

Exploring Loading data to GBQ with POST request I haven't found how to rewrite existing table (current examples append data to existing table or create new table if it doesn't exist). I see that there is a possibility to do it with web console so I assume there is a way to resolve this task with POST request. Are there someone who knows it?

Answer 1

You should set WRITE_TRUNCATE value for configuration.load.writeDisposition property of job configuration

configuration.load.writeDisposition string [Optional] Specifies the action that occurs if the destination table already exists.

The following values are supported:
WRITE_TRUNCATE: If the table already exists, BigQuery overwrites the table data. WRITE_APPEND: If the table already exists, BigQuery appends the data to the table. WRITE_EMPTY: If the table already exists and contains data, a 'duplicate' error is returned in the job result.
The default value is WRITE_APPEND.

Each action is atomic and only occurs if BigQuery is able to complete the job successfully. Creation, truncation and append actions occur as one atomic update upon job completion.