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BrowseTable.java
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BrowseTable.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_browse_table]
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQuery.TableDataListOption;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.TableId;
import com.google.cloud.bigquery.TableResult;
// Sample to directly browse a table with optional paging
public class BrowseTable {
public static void main(String[] args) {
// TODO(developer): Replace these variables before running the sample.
String table = "MY_TABLE_NAME";
String dataset = "MY_DATASET_NAME";
browseTable(dataset, table);
}
public static void browseTable(String dataset, String table) {
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();
// Identify the table itself
TableId tableId = TableId.of(dataset, table);
// Page over 100 records. If you don't need pagination, remove the pageSize parameter.
TableResult result = bigquery.listTableData(tableId, TableDataListOption.pageSize(100));
// Print the records
result
.iterateAll()
.forEach(
row -> {
row.forEach(fieldValue -> System.out.print(fieldValue.toString() + ", "));
System.out.println();
});
System.out.println("Query ran successfully");
} catch (BigQueryException e) {
System.out.println("Query failed to run \n" + e.toString());
}
}
}
// [END bigquery_browse_table]