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bigquery_load_table_partitioned.go
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bigquery_load_table_partitioned.go
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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package loadingdata
// [START bigquery_load_table_partitioned]
import (
"context"
"fmt"
"time"
"cloud.google.com/go/bigquery"
)
// importPartitionedTable demonstrates specifing time partitioning for a BigQuery table when loading
// CSV data from Cloud Storage.
func importPartitionedTable(projectID, destDatasetID, destTableID string) error {
// projectID := "my-project-id"
// datasetID := "mydataset"
// tableID := "mytable"
ctx := context.Background()
client, err := bigquery.NewClient(ctx, projectID)
if err != nil {
return fmt.Errorf("bigquery.NewClient: %v", err)
}
defer client.Close()
gcsRef := bigquery.NewGCSReference("gs://cloud-samples-data/bigquery/us-states/us-states-by-date.csv")
gcsRef.SkipLeadingRows = 1
gcsRef.Schema = bigquery.Schema{
{Name: "name", Type: bigquery.StringFieldType},
{Name: "post_abbr", Type: bigquery.StringFieldType},
{Name: "date", Type: bigquery.DateFieldType},
}
loader := client.Dataset(destDatasetID).Table(destTableID).LoaderFrom(gcsRef)
loader.TimePartitioning = &bigquery.TimePartitioning{
Field: "date",
Expiration: 90 * 24 * time.Hour,
}
loader.WriteDisposition = bigquery.WriteEmpty
job, err := loader.Run(ctx)
if err != nil {
return err
}
status, err := job.Wait(ctx)
if err != nil {
return err
}
if status.Err() != nil {
return fmt.Errorf("job completed with error: %v", status.Err())
}
return nil
}
// [END bigquery_load_table_partitioned]