SUM

Description

Used to return the sum of all values of the selected field

Syntax

SUM(<expr>)

Parameters

Parameter	Description
<expr>	The field to calculate the sum of, supports type Double, Float, Decimal, LargeInt, BigInt, Integer, SmallInt, TinyInt.

Return Value

Return the sum of all values of the selected field. If there is no valid data in the group, returns NULL.

Examples

-- Create sample tables
CREATE TABLE sales_table (
    product_id INT,
    price DECIMAL(10,2),
    quantity INT
) DISTRIBUTED BY HASH(product_id)
PROPERTIES (
    "replication_num" = "1"
);

-- Insert test data
INSERT INTO sales_table VALUES
(1, 99.99, 2),
(2, 159.99, 1),
(3, 49.99, 5),
(4, 299.99, 1),
(5, 79.99, 3);

-- Calculate the total sales amount
SELECT SUM(price * quantity) as total_sales
FROM sales_table;

+-------------+
| total_sales |
+-------------+
|     1149.88 |
+-------------+