SQL MAX() Function |
SQL Sample Code - SQL MAX() Function |
| SELECT MAX(column_name) FROM table_name; |
See the SQL samples section below for an explanation of the Max function.
What does the MAX() Function do? |
The SQL MAX() function simply retrieves the largest value that exists in a specified column.
Note: The MAX() function can only be used on database columns with numeric based data-types. See our data-types section for more information.
Sample 1 – SQL MAX() Function |
In this SQL sample we will use the database table ‘tblCompany’.
| Company_ID | CompanyName | Address | Town | Sales |
| 1 | SQL Sample | 1 Sample St | Hamburg | 10000 |
| 2 | SQL Code Land | 2 Code Rd | Hamburg | 20000 |
| 3 | Sample Code World | 66 SQL St | Curry | 18000 |
| 4 | SQL Reference Ltd | 34 Reference St | Pisa | 17000 |
In this SQL sample we simply want to know the largest Sales figure in the tblCompany table.
Use the SELECT statement below:
| SELECT MAX(Sales) AS Sales_Max FROM tblCompany; |
The result will look like this:
| Sales_Max |
| 20000 |
Note: the AS operator is used to name the result column as ‘Sales_Max’. See the Alias section of this website to learn more about renaming database columns and tables.
Sample 2 – SQL MAX() Function using GROUP BY. |
In this SQL sample we will use the database table ‘tblCompany’.
| Company_ID | CompanyName | Address | Town | Sales |
| 1 | SQL Sample | 1 Sample St | Hamburg | 10000 |
| 2 | SQL Code Land | 2 Code Rd | Hamburg | 20000 |
| 3 | Sample Code World | 66 SQL St | Curry | 18000 |
| 4 | SQL Reference Ltd | 34 Reference St | Pisa | 17000 |
In this SQL sample we want to know the largest Sales records for each town in the tblCompany table.
Use the SELECT statement below:
| SELECT Town, MAX(Sales) FROM tblCompany GROUP BY Town; |
The result will look like this:
| Town | COUNT(Sales) |
| Hamburg | 20000 |
| Curry | 18000 |
| Pisa | 17000 |
Related SQL Sample Code:
|
|