# REPLACE Function

## Syntax

```sql
REPLACE(str,from_str,to_str)
```

## Description

Returns the string `str` with all occurrences of the string `from_str` replaced by the string `to_str`. `REPLACE()` performs a case-sensitive match when searching for `from_str`. If any argument is `NULL`, the function returns `NULL`.

## Examples

```sql
SELECT REPLACE('www.mariadb.org', 'w', 'Ww');
+---------------------------------------+
| REPLACE('www.mariadb.org', 'w', 'Ww') |
+---------------------------------------+
| WwWwWw.mariadb.org                    |
+---------------------------------------+
```

<sub>*This page is licensed: GPLv2, originally from*</sub> [<sub>*fill\_help\_tables.sql*</sub>](https://github.com/MariaDB/server/blob/main/scripts/fill_help_tables.sql)

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