SQL Execution Order

Understanding SQL execution order helps optimize queries and avoid unnecessary processing.

𝐇𝐞𝐫𝐞’𝐬 𝐭𝐡𝐞 𝐭𝐲𝐩𝐢𝐜𝐚𝐥 𝐞𝐱𝐞𝐜𝐮𝐭𝐢𝐨𝐧 𝐟𝐥𝐨𝐰:

1️⃣ FROM – Identifies the main table
2️⃣ JOIN – Merges tables based on conditions
3️⃣ WHERE – Filters rows before grouping
4️⃣ GROUP BY – Groups data for aggregation
5️⃣ HAVING – Filters grouped data
6️⃣ SELECT – Retrieves specified columns
7️⃣ Functions – Applies DISTINCT, COUNT, etc.
8️⃣ ORDER BY – Sorts results
9️⃣ LIMIT – Restricts rows returned