/
CreateClusteredTable.java
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/
CreateClusteredTable.java
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/*
* Copyright 2020 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
*
* http://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 com.example.bigquery;
// [START bigquery_create_table_clustered]
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.Clustering;
import com.google.cloud.bigquery.Field;
import com.google.cloud.bigquery.Schema;
import com.google.cloud.bigquery.StandardSQLTypeName;
import com.google.cloud.bigquery.StandardTableDefinition;
import com.google.cloud.bigquery.TableId;
import com.google.cloud.bigquery.TableInfo;
import com.google.cloud.bigquery.TimePartitioning;
import com.google.common.collect.ImmutableList;
import java.util.List;
public class CreateClusteredTable {
public static void main(String[] args) {
// TODO(developer): Replace these variables before running the sample.
String datasetName = "MY_DATASET_NAME";
String tableName = "MY_TABLE_NAME";
Schema schema =
Schema.of(
Field.of("name", StandardSQLTypeName.STRING),
Field.of("post_abbr", StandardSQLTypeName.STRING),
Field.of("date", StandardSQLTypeName.DATE));
createClusteredTable(datasetName, tableName, schema, ImmutableList.of("name", "post_abbr"));
}
public static void createClusteredTable(
String datasetName, String tableName, Schema schema, List<String> clusteringFields) {
try {
// Initialize client that will be used to send requests. This client only needs to be created
// once, and can be reused for multiple requests.
BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();
TableId tableId = TableId.of(datasetName, tableName);
TimePartitioning partitioning = TimePartitioning.of(TimePartitioning.Type.DAY);
// Clustering fields will be consisted of fields mentioned in the schema.
// BigQuery supports clustering for both partitioned and non-partitioned tables.
Clustering clustering = Clustering.newBuilder().setFields(clusteringFields).build();
StandardTableDefinition tableDefinition =
StandardTableDefinition.newBuilder()
.setSchema(schema)
.setTimePartitioning(partitioning)
.setClustering(clustering)
.build();
TableInfo tableInfo = TableInfo.newBuilder(tableId, tableDefinition).build();
bigquery.create(tableInfo);
System.out.println("Clustered table created successfully");
} catch (BigQueryException e) {
System.out.println("Clustered table was not created. \n" + e.toString());
}
}
}
// [END bigquery_create_table_clustered]