SQL LEN() Function

LEN() Function

LEN() Function returns the length of the value in the text field .

SQL LEN() syntax

SELECT LEN(column_name) FROM table_name;

The function in MySQL is LENGTH():

SELECT LENGTH(column_name) FROM table_name;

Demo database

In this tutorial , we will use the php sample database.

The following is the data selected from the "Websites" table:

+----+--------------+--- ------------------------+------+---------+
| id | name | url                                                                    --------+-------+---------+
| 1 | Google | https://www.google.cm/ | 1 | USA |
| 2 | Taobao | https://www.taobao.com/ | 13 | CN |
| 3 | php Chinese website | //m.sbmmt.com/ | 4689 | CN |
| 4 | Weibo | http://weibo.com/ | 20 | CN |
| 5 | Facebook | https://www.facebook.com/ | 3 | USA |
| 7 | stackoverflow | http://stackoverflow.com/ | 0 | IND |
+----+---------------+----------- ----------------+-------+---------+
SQL LEN( ) Example

The following SQL statement selects the length of the values ​​in the "name" and "url" columns from the "Websites" table:

Example

SELECT name , LENGTH(url) as LengthOfURL
FROM Websites;
Execute the above SQL and the output result is as follows: