如果使用大小写，则在bigquery中输出两行

Question

当我运行此查询时，在同一日期的两个不同行中给出结果，其中包含零其他包含事件计数????     如何解决这个问题，任何帮助都会非常感激！

     (Select 
   distinct(case 
  when event_text = 'poll_vote' THEN device_id Else 0 END) as 
    pollvote,event_date from
  (Select event_date,event_text,count(distinct users) as device_id from
   (SELECT event.name as event_text,  ( user.value.value.string_value) 
    AS users,

    CAST(TIMESTAMP_ADD(TIMESTAMP_MICROS(event.timestamp_micros), 
    INTERVAL 330 MINUTE) AS date) AS event_date
  FROM
       `dataset.tablename`,
      UNNEST(event_dim) AS event,
      UNNEST(user_dim.user_properties) AS user
     where
         user.key="context_device_id" 
      GROUP BY
         event_date,event_text,users)
      GROUP BY
         event_text,event_date))

Answer 1

仅将“ GROUP BY”用于event_date可以根据需要只给您一列。以下是一些GROUP BY示例。