In a GBase database , writing SQL is only the first step—making it efficient is what matters. This article introduces key optimization principles based on query behavior and execution strategy. 🚀 1. Why Query Optimization Matters Poorly optimized queries can cause: Full table scans High memory usage Slow response time 👉 In large-scale systems, this becomes critical. 🧠 2. Understanding Execution Behavior A SQL query is not executed directly—it is: Parsed Optimized Converted into execution plan Executed in steps Example Query ```sql id="q1" SELECT * FROM orders WHERE amount > 100; ` --- 👉 The database decides: * Whether to use index * Whether to scan full table * How to distribute execution --- # ⚙️ 3.…