How to Aggregate and Group By in Google BigQuery

Question

In Google BigQuery, I'd like to roll up metrics based on certain dimensions (in this case, by campaign and partner). When I use the code below, I'm getting the error:

Expression 'a.genre' is not present in the GROUP BY list.

Can someone please advise what I need to fix in my script? Thank you!
Please see below for sample table (disregard how the headers in the table below don't exactly match the provided script):

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)

Answer 1

In SQL, in general, - if you're aggregating using groups - you have to decide whether a field in your select statement gets aggregated or is a group. You can't just let it stand there without any context. So in your case you probably want to either remove all other fields

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)

or add them as groups in which you're aggregating 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)