[英]How to Aggregate and Group By in Google BigQuery
在Google BigQuery中,我想根据某些维度(在这种情况下,按广告系列和合作伙伴)汇总指标。 当我使用下面的代码时,出现错误:
有人可以告诉我我需要在脚本中修复的问题吗? 谢谢!
请参阅下面的示例表(忽略下表中的标题与提供的脚本不完全匹配):
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,如果要使用组进行聚合,则必须确定select语句中的字段是聚合还是组。 您不能没有任何上下文就让它站在那里。 因此,在您的情况下,您可能要删除所有其他字段
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)
或将它们添加为汇总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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