Question

如何运行查询，通过我的Android和iOS数据来返回我需要的表格。

当我运行此

时，目前出现上述错误

#standardSQL
SELECT
  user_dim.app_info.app_instance_id,
  user_dim.device_info.device_category,
  user_dim.device_info.user_default_language,
  user_dim.device_info.platform_version,
  user_dim.device_info.device_model,
  user_dim.geo_info.country,
  user_dim.geo_info.city,
  user_dim.app_info.app_version, 
  user_dim.app_info.app_store,
  user_dim.app_info.app_platform
FROM

app.com_aaa_IOS.app_events_20171204，app.com_aaa_ANDROID.app_events_20171204

Answer 1

SELECT
  user_dim.app_info.app_instance_id,
  user_dim.device_info.device_category,
  user_dim.device_info.user_default_language,
  user_dim.device_info.platform_version,
  user_dim.device_info.device_model,
  user_dim.geo_info.country,
  user_dim.geo_info.city,
  user_dim.app_info.app_version, 
  user_dim.app_info.app_store,
  user_dim.app_info.app_platform
FROM
  app.com_aaa_IOS.app_events_20171204

UNION ALL

SELECT
  user_dim.app_info.app_instance_id,
  user_dim.device_info.device_category,
  user_dim.device_info.user_default_language,
  user_dim.device_info.platform_version,
  user_dim.device_info.device_model,
  user_dim.geo_info.country,
  user_dim.geo_info.city,
  user_dim.app_info.app_version, 
  user_dim.app_info.app_store,
  user_dim.app_info.app_platform
FROM
  app.com_aaa_ANDROID.app_events_20171204

Answer 2

标准SQL

您正在使用Standard SQL，那么您应该使用UNION ALL运算符：

SELECT
  user_dim.app_info.app_instance_id,
  ...
FROM app.com_aaa_IOS.app_events_20171204
UNION ALL
SELECT
  user_dim.app_info.app_instance_id,
  ...
FROM app.com_aaa_ANDROID.app_events_20171204`

请记住，您可以使用Wildcard Tables：

SELECT
FROM
  `<project-id>.<dataset-id>.<table-prefix>*`
WHERE
  bool_expression

旧版SQL

如果您切换到Legacy SQL，那么您可以将逗号分隔的表用作联合，就像在查询中一样。

可以使用逗号查询这些数据源的组合，这是BigQuery中的UNION ALL运算符

大查询SQL错误：列名user_dim在[3：3]处不明确

2 个答案: