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- To do this, use the SUM function with the DISTINCT keyword in the argument.
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Jul 23, 2021 · In this article, you’ve learned how the SQL function SUM() works. You can use it to add all the values in one column across all rows in a table, to total the results of an expression that uses more than one column, and to sum up values for a group of rows.
- Use case with ALL & DISTINCT. Let’s start with the first use case in which we will understand two arguments ALL and DISTINCT and their output. I have mentioned above that argument ALL is the default argument and will be used by SQL Server in case you will not specify any of these arguments.
- Use case with GROUP BY, HAVING, and ORDER BY statement. Suppose you got a requirement to return a total number of units sold along with their total values, then we can use the SQL SUM function on two columns.
- Use case with other system functions like MIN, MAX, AVG. The SQL SUM() function can also be used along with other aggregate functions like MAX, AVG, & MIN.
- Use case with Expressions. The SQL SUM() function can also be used with arithmetic expressions. Suppose we have two columns Price and Quantity. The price column is storing the per unit cost of each product and the Quantity column is storing the total units sold.
Use an SQL function to calculate the sum of all the Price column values in the Products table.
For finding the even number we should use. select num from table where ( num % 2 ) = 0
- Basic Usage of SUM() and GROUP BY in SQL. Let’s look at an example of how the SUM() function works together with GROUP BY: SELECT country, SUM(quantity) AS total_quantity FROM orders GROUP BY country;
- Computing 2 SUMs and Grouping By 2 Columns. In the previous example, we saw how to use SUM() and GROUP BY to group a set of data by the column country and get the total quantity for each country separately.
- Using a WHERE Condition with SUM and GROUP BY. You can use a WHERE condition in your query with SUM() and GROUP BY. In this case, the database engine alters the procedure seen above to return the results of the query.
- Using the ORDER BY Clause With SUM and GROUP BY. If we also add an ORDER BY clause to the query we build with SUM() and GROUP BY, then the database engine will have to do a little more work.
Jun 9, 2023 · What is the SQL SUM Function? The SUM function is used to add up the numbers in a specified column and return the total. It’s part of the SQL Standard so it’s available in all major databases (including Oracle, SQL Server, MySQL, and PostgreSQL).
Use the SUM() function to calculate the sum of values. Use the DISTINCT option to calculate the sum of distinct values. Use the ALL option to calculate the sum of all values including duplicates.
