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[英]How to export data from BigQuery and store it as .csv in Google Storage
[英]Export nested BigQuery data to cloud storage
我试图通过API将bigquery数据导出到谷歌云存储桶。 我从这里改编了代码片段https://cloud.google.com/bigquery/docs/exporting-data
Job job = table.extract(format, gcsUrl);
// Wait for the job to complete
try {
Job completedJob = job.waitFor(WaitForOption.checkEvery(1,
TimeUnit.SECONDS),
WaitForOption.timeout(3, TimeUnit.MINUTES));
if (completedJob != null && completedJob.getStatus().getError() == null) {
// Job completed successfully
} else {
// Handle error case
System.out.println(completedJob.getStatus().getError());
}
} catch (InterruptedException | TimeoutException e) {
// Handle interrupted wait
}
我已经用“JSON”交换格式,因为我的数据是嵌套的,无法导出到CSV和gcsUrl与“gs://mybucket/export_*.json”。 但错误消息告诉我以下问题:
transfer not working BigQueryError{reason=invalid, location=null, message=Operation cannot be performed on a nested schema. Field: totals}
有什么建议吗? JSON应该能够处理嵌套格式......
引用destinationFormat选项 ,您应该为format
变量设置"NEWLINE_DELIMITED_JSON"
,以便导出为JSON。
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