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LEN Function

Posted By: Sarita Patel     Category: SQL Server     Views: 7018

This article explains LEN function of sql server with examples.

LEN is used to get number of characters in a specified string.

Syntax of LEN Function :

LEN (string_expression)

string_expression is a string to get length of it.

Return type of it is an integer value.

Examples of LEN Function :

Example 1 : Use of LEN function in select clause

SELECT LEN('Syntax-Example')


Above example returns number of characters in the specified string i.e. 14

Example 2 : Use of LEN function to display field length of table in a select clause

SELECT ContactName, LEN(ContactName) AS Length
FROM    Customers

ContactName           Length
Maria Anders            12
Ana Trujillo               12
Antonio Moreno        14
Thomas Hardy          12
Christina Berglund    18
Hanna Moos             10

Above example displays length of customer name in customer table.

Example 3 : Use of LEN function in where clause

SELECT ProductName
FROM    Products
WHERE  LEN(ProductName)  <  20

Aniseed Syrup
Mishi Kobe Niku
Queso Cabrales

Above example displays all customer name having length less than 20 characters.


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Sarita Patel
Sarita Patel author of LEN Function is from United States.
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