Sequel-SQL Query Optimization

Example

SELECT * FROM Orders WHERE CustomerID = 123; -- Optimized by suggesting index on CustomerID

Scenario

A developer is facing slow response times on a customer order lookup. Sequel could suggest adding an index on the 'CustomerID' column to decrease lookup times significantly.

Example

EXPLAIN ANALYZE SELECT * FROM Users WHERE last_login < NOW() - INTERVAL '1 YEAR';

Scenario

When a query intended to find inactive users takes too long, Sequel could review the execution plan and recommend strategies like partitioning the 'Users' table or revising the query to improve execution speed.

Example

WITH RankedProducts AS (SELECT ProductID, RANK() OVER (ORDER BY Price DESC) AS PriceRank FROM Products) SELECT * FROM RankedProducts WHERE PriceRank <= 10;

Scenario

A developer needs to generate a report ranking products by price. Sequel assists by crafting a complex query using window functions to achieve the desired ranking efficiently.