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PostgreSQL – MIN() Function

  • Last Updated : 01 Jun, 2020

PostgreSQL MIN() function is an aggregate function that returns the minimum value in a set of values.

Syntax: MIN(expression);

The MIN() function can be used with SELECT, WHERE and HAVING clause.

Now let’s look into some examples.For examples we will be using the sample database (ie, dvdrental).
Example 1:
The below query gets us the minimum amount paid by customers in the payment table:

SELECT MIN(amount)
FROM payment;

Output:

Example 2:
The following query gets the smallest payment paid by each customer:

SELECT
    customer_id,
    MIN(amount)
FROM
    payment
GROUP BY
    customer_id;

Output:

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