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Upgrade to ProYou are an Attribution Analyst at Google. The attribution team is building a conversion-level report that includes each conversion's click cost and campaign context. Since some conversions are view-through (no associated click), click_id in the conversions table is nullable. You need a LEFT JOIN to clicks to preserve all conversions, and an INNER JOIN to campaigns for campaign details.
You are an Attribution Analyst at Google. The attribution team is building a conversion-level report that includes each conversion's click cost and campaign context. Since some conversions are view-through (no associated click), click_id in the conversions table is nullable. You need a LEFT JOIN to clicks to preserve all conversions, and an INNER JOIN to campaigns for campaign details.