- (SUM(total_cost)/100000)/(SUM(impressions))*1000 AS avg_cpm
- ((SUM(spend)/100000000)/SUM(impressions))*1000 AS avg_cpm
- ((SUM(total_cost)/100000)/SUM(impressions))/1000 AS avg_cpm
The correct answer is:
- ((SUM(spend)/100000000)/SUM(impressions))*1000 AS avg_cpm