[英]How to Aggregate and Group By in Google BigQuery
在Google BigQuery中,我想根據某些維度(在這種情況下,按廣告系列和合作伙伴)匯總指標。 當我使用下面的代碼時,出現錯誤:
有人可以告訴我我需要在腳本中修復的問題嗎? 謝謝!
請參閱下面的示例表(忽略下表中的標題與提供的腳本不完全匹配):
SELECT
SUM(a.amount) totalcost,
a.campaign_name,
c.friendly_campaign,
p.friendly_partner_name,
a.partner_name,
a.genre,
a.season,
a.package
FROM
[TABLE 1] a
LEFT OUTER JOIN
[TABLE 2] p
ON
a.partner_name = p.raw_partner_name
LEFT OUTER JOIN
[TABLE 3] c
ON
a.campaign_name = c.campaign
GROUP BY ROLLUP(c.friendly_campaign, p.friendly_partner_name)
通常,在SQL中,如果要使用組進行聚合,則必須確定select語句中的字段是聚合還是組。 您不能沒有任何上下文就讓它站在那里。 因此,在您的情況下,您可能要刪除所有其他字段
SELECT
SUM(a.amount) totalcost,
c.friendly_campaign,
p.friendly_partner_name,
FROM
[TABLE 1] a
LEFT OUTER JOIN
[TABLE 2] p
ON
a.partner_name = p.raw_partner_name
LEFT OUTER JOIN
[TABLE 3] c
ON
a.campaign_name = c.campaign
GROUP BY ROLLUP(c.friendly_campaign, p.friendly_partner_name)
或將它們添加為匯總a.amount
:
SELECT
SUM(a.amount) totalcost,
a.campaign_name,
c.friendly_campaign,
p.friendly_partner_name,
a.partner_name,
a.genre,
a.season,
a.package
FROM
[TABLE 1] a
LEFT OUTER JOIN
[TABLE 2] p
ON
a.partner_name = p.raw_partner_name
LEFT OUTER JOIN
[TABLE 3] c
ON
a.campaign_name = c.campaign
GROUP BY ROLLUP(2,3,4,5,6,7,8)
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