使用 BigQuery 在分区表中自动添加新行

Question

I have a table in Big Query which is getting daily updated with new rows. I have created a new partitioned table using Partition by Date with date column to reduce execution time and cost. But, I need to daily automatically update the partitioned table with new data as well. How should this be implemented? Iam a newbie in Bigquery, thus need help.

Answer 1

You can use the below code to Load data into a column-based time partitioning table.

from google.cloud import bigquery

# Construct a BigQuery client object.
client = bigquery.Client()

# TODO(developer): Set table_id to the ID of the table to create.
# table_id = "your-project.your_dataset.your_table_name"

job_config = bigquery.LoadJobConfig(
    schema=[
        bigquery.SchemaField("name", "STRING"),
        bigquery.SchemaField("post_abbr", "STRING"),
        bigquery.SchemaField("date", "DATE"),
    ],
    skip_leading_rows=1,
    time_partitioning=bigquery.TimePartitioning(
        type_=bigquery.TimePartitioningType.DAY,
        field="date",  # Name of the column to use for partitioning.
        expiration_ms=7776000000,  # 90 days.
    ),
)
uri = "gs://cloud-samples-data/bigquery/us-states/us-states-by-date.csv"

load_job = client.load_table_from_uri(
    uri, table_id, job_config=job_config
)  # Make an API request.

load_job.result()  # Wait for the job to complete.

table = client.get_table(table_id)
print("Loaded {} rows to table {}".format(table.num_rows, table_id))

For more information about the partitioned tables you can refer this document .