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Have you written anything with CTE (Common Table Expression, WITH)?

sobes.tech AI

Answer from AI

Yes, I have used CTE (Common Table Expression) in SQL queries to improve readability and structure of complex queries. CTE allows defining a temporary named table that can be used within the main query.

Example of using CTE:

WITH recent_orders AS (
    SELECT order_id, customer_id, order_date
    FROM orders
    WHERE order_date > CURRENT_DATE - INTERVAL '30 days'
)
SELECT customer_id, COUNT(order_id) AS orders_count
FROM recent_orders
GROUP BY customer_id;

In Go, it is convenient to use this together with database libraries such as database/sql or sqlx, simply by passing such a query as a string.

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