LOWER / UPPER Function in SQL Server

LOWER / UPPER
The will just change case of a string expression. For Example,

Example:

SELECT UPPER('THIs PrOJEct Is WOrkiNG wELL')

Output:
THIS PROJECT IS WORKING WELL

Example:SELECT LOWER('THIs PrOJEct Is WOrkiNG wELL')

Output:

this project is working well