There’s no one correct answer to this question, Maitya. It depends on a lot of factors like what has been your previous knowledge or expertise in this field, or simply what is your purpose. I think if you are already familiar with programming languages then it would be quite easy for you to learn python first. If that’s not the case then learn SQL first because of some technical reasons, as it will give you an edge in sets and algebra. SQL is built in a whole different way and learning it first would be beneficial so that you don’t mix other typical programming languages with it and to prevent yourself from muddling up these two or for that matter of fact, any programming language with SQL.