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What is the logical order of execution of a SQL query?

Q: What is the logical order of execution of a SQL query?

Logically: **FROM/JOIN → WHERE → GROUP BY → HAVING → SELECT → DISTINCT → ORDER BY → LIMIT**. This is why column aliases defined in SELECT can't be used in WHERE (evaluated earlier) but can be used in ORDER BY (evaluated later).

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Explain query execution order.

order-of-execution

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Logically: FROM/JOIN → WHERE → GROUP BY → HAVING → SELECT → DISTINCT → ORDER BY → LIMIT. This is why column aliases defined in SELECT can't be used in WHERE (evaluated earlier) but can be used in ORDER BY (evaluated later).

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