MySQL LOWER Function | Convert Text to Lowercase

MySQL LOWER is an inbuilt Function in MySQL. It converts a text to lowercase in MySQL. In this article, we will discuss the MySQL LOWER Function. Also, we will discuss a few examples of using it.

This function is synonymous to MySQL LCASE Function. Also, you can convert text to uppercase using MySQL UPPER Function.

Syntax

LOWER (string)

Parameters

The Function expects only one parameter. You need to pass the string you need to convert in lowercase as the parameter.

Return Value

The function returns the input string to lowercase.

Examples

Let’s see some examples to use the function in queries.

Example 1: Basic Query

You can use the LOWER Function to convert a string to lowercase.

mysql> SELECT LOWER('BRINGING KNOWLEDGE TOGEHTER') as lowerCase;
+-----------------------------+
| lowerCase                   |
+-----------------------------+
| bringing knowledge togehter |
+-----------------------------+
1 row in set (0.00 sec)

Example 2: SELECT Query

You can use the Lower Function in SELECT statements to fetch data from database.

mysql> SELECT LOWER(user_name) as lowerUserName FROM user_description;
+---------------+
| lowerUserName |
+---------------+
| chandler      |
| monica        |
| ross          |
+---------------+

Example 3: UPDATE Query

You can also update the existing fields in a table using the function in an UPDATE Query.

mysql> UPDATE user_description SET user_name = LOWER(user_name);
Query OK, 3 rows affected (0.07 sec)
Rows matched: 3  Changed: 3  Warnings: 0

mysql> SELECT user_name FROM user_description;
+-----------+
| user_name |
+-----------+
| chandler  |
| monica    |
| ross      |
+-----------+

Conclusion

In this article, we discussed the LOWER Function. It converts a text to lowercase in MySQL. You can read more about it on the Official MySQL Documentation. Also, read more about MySQL String Functions on Concatly.

Also, you can convert text to uppercase using MySQL UPPER Function.