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27ec678 | 1 2 3 4 | -- Paid media cost per click, by currency
-- Cost over clicks of paid media in the month.
SELECT strftime(date, '%Y-%m') AS month, currency AS grp, sum(cost) AS num, sum(clicks) AS den, sum(cost) / NULLIF(sum(clicks), 0) AS value FROM marketing.ad_spend_daily WHERE date >= TIMESTAMP '2023-10-01' AND date < TIMESTAMP '2026-10-01' GROUP BY 1, 2 ORDER BY 1, 2
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