How can I improve in my programming skills. If anyone is able to answer it because they have specialised in it, Please reply back! What are some websites where we can code SQL for Free??
To improve your programming skills you have to clear your basics and need to do lots of practice.
Check this for free SQL learning. https://javarevisited.blogspot.com/2015/06/5-websites-to-learn-sql-online-for-free.html?m=1
BMI calculator code project
How to create a border
Overloading + operator