SFMC SQL: Mastering TOP & WHERE Clause (Smart Data Selection)
SFMC SQL: Mastering TOP & WHERE Clause 🔍 What is TOP? Think of TOP as a VIP pass 🎟️ You’re saying: “I don’t need the whole crowd — just give me the best N records.” 👉 TOP N = fetch first N rows from your dataset 🧠 Mental Picture Imagine your Data Extension is a concert hall 🎤 TOP 10 → VIP front row ORDER BY → who gets priority No ORDER BY → random chaos 😅 🛠 TOP Clause – Practical Tasks Target Data Extension 👉 Task 1: Basic TOP (No Priority) SELECT TOP 5 * FROM CustomersDE 💡 Returns first 5 rows (random order) 👉 Task 2: TOP with ORDER BY (Recommended 🔥) SELECT TOP 5 FirstName, Email, CreatedDate FROM CustomersDE ORDER BY CreatedDate DESC 💡 Latest customers first (predictable) 👉 Task 3: TOP with Condition SELECT TOP 3 FirstName, Email FROM CustomersDE WHERE Status = 'Active' ORDER BY CreatedDate DESC 💡 Only active + newest customers 👉 Task 4: TOP Per Group (Advanced) SELECT DeptID,...