How can you convert uppercase letters to lowercase letters in Oracle?

In Oracle database, you can use the LOWER() function to convert uppercase letters to lowercase letters. Here is a more detailed example:

If you have a table named employees with a column called first_name storing employees’ names, and you want to convert all uppercase letters in the first_name column to lowercase, you can use the following SQL statement:

UPDATE employees
SET first_name = LOWER(first_name);

This SQL statement will update the first_name column in the employees table, converting all uppercase letters to lowercase letters. Please note that this will permanently change the data in the database, so please use it with caution. You can modify the table name and column name to suit your needs as necessary.