HAVING in Oracle - Examples & AI Generator

Using the HAVING clause in Oracle helps you filter aggregated data after a GROUP BY, but getting the syntax right isn’t always straightforward, especially if you work across multiple database systems. With AI2sql, you can skip memorizing Oracle HAVING rules—just state your need, and get production-ready SQL in seconds—no manual coding required.

HAVING Syntax in Oracle

Basic HAVING Structure

SELECT column1, aggregate_function(column2)
FROM table_name
GROUP BY column1
HAVING aggregate_function(column2) condition;

• Use HAVING after GROUP BY to filter aggregated rows.

• Aggregate functions like SUM(), COUNT(), AVG() are typically used.

• Oracle requires the aggregation in HAVING; WHERE won’t work here.

HAVING Examples You Can Generate Instantly

Find Customers with More Than 5 Orders

SELECT customer_id, COUNT(order_id) AS total_orders
FROM orders
GROUP BY customer_id
HAVING COUNT(order_id) > 5;

Show Products with Sales Over $10,000

SELECT product_id, SUM(amount) AS total_sales
FROM sales
GROUP BY product_id
HAVING SUM(amount) > 10000;

List Employees Serving Multiple Departments

SELECT employee_id, COUNT(DISTINCT department_id) AS department_count
FROM employee_departments
GROUP BY employee_id
HAVING COUNT(DISTINCT department_id) > 1;

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FAQ: HAVING in Oracle

• Can I use WHERE and HAVING together in Oracle?
  Yes. Use WHERE for row-level filtering before aggregation, then HAVING for filtering after GROUP BY aggregates.

• What happens if I use HAVING without GROUP BY?
  In Oracle, HAVING can be used without GROUP BY, but only if aggregate functions are present.

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