Definition and Usage
The LEN() function returns the length of a string.
Note: Trailing spaces at the end of the string is not included when calculating the length. However, leading spaces at the start of the string is included when calculating the length.
Tip: Also look at the DATALENGTH() function.
Syntax
LEN(string)
Parameter Values
| Parameter | Description |
|---|---|
| string | Required. The string to return the length for. If string is NULL, it returns NULL |
Technical Details
| Works in: | SQL Server (starting with 2008), Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse |
|---|
More Examples
Example
Return the length of a string (counts leading spaces, but not trailing spaces):
SELECT LEN(' W3Schools.com ');
