根据google BigQuery SQL中的属性删除重复行

Question

我有一张名为：结果的表 我正在使用 BigQuery 从 GA 中选择数据

SELECT
  Date,
  totals.pageviews,
  h.transaction.transactionId,
  h.item.itemQuantity,
  h.transaction.transactionRevenue,
  totals.bounces,
  fullvisitorid,
  totals.timeOnSite,
  device.browser,
  device.deviceCategory,
  trafficSource.source,
  channelGrouping,
  h.page.pagePath,
  h.eventInfo.eventCategory,
  device.operatingSystem
FROM
  `atomic-life-148403.126959513.ga_sessions_*`,
  UNNEST(hits) AS h
WHERE
  _TABLE_SUFFIX BETWEEN REPLACE(CAST(DATE_ADD(CURRENT_DATE(), INTERVAL -1 YEAR) AS STRING), '-','')
  AND CONCAT('intraday_', REPLACE(CAST(DATE_ADD(CURRENT_DATE(), INTERVAL 0 DAY) AS STRING), '-',''))
  ORDER BY
  date  DESC

有一些记录重复。如何删除表中的重复记录？

我想得到以下结果。

Answer 1

您可以使用ROW_NUMBER()类似的分析函数

select * from (
select *,
ROW_NUMBER() OVER(PARTITION BY transactionid ORDER BY transactionid) rownum
from result ) xxx
where rownum = 1;