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Problemas Comuns Do Power Query: Quais São e Como Resolver

Power Query - Erros comuns e como corrigi-los - App

Deshansh Garg on Instagram: "That query is slow because of the *nested SELECT (subquery)* — * The inner query runs repeatedly for each row in `users`. * It causes *N+1 lookups*→ huge performance hit on large tables. * No index reuse or proper join optimization happens. --- 🔹 *Fix: Use a JOIN Instead!* ```sql SELECT DISTINCT u.* FROM users u JOIN orders o ON u.id = o.user_id WHERE o.amount > 1000; ``` ✅ The join lets PostgreSQL use indexes and execute in one pass. ✅ The planner can optimize join