Oracle Remove Characters: Quick Guide

To remove specific characters in Oracle, you can use the REPLACE function. Here is an example:

Suppose we have a table called employees, which has a column named employee_name that includes some employee names, but each name has a special character “#” at the beginning. If we want to remove this special character, we can use the following SQL statement:

UPDATE employees
SET employee_name = REPLACE(employee_name, '#', '')
WHERE employee_name LIKE '#%';

The above SQL statement will remove all characters that begin with “#” in the employee_name column and replace them with an empty string.

If you just want to do a search without updating the data, you can use a similar statement:

SELECT REPLACE(employee_name, '#', '') as cleaned_name
FROM employees
WHERE employee_name LIKE '#%';

This can search for the employee’s name after removing special characters.