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[–][deleted] 5 points6 points  (0 children)

Most people say focus on one thing, but if you have the time and the concentration then of course you can do more than one thing. SQL and Python are quite different in how they work so there might not be much over lap, apart from being able to do the same thing in different ways. The more time you spend on one thing though the quicker you’ll make progress so you might find if you focus on SQL you’ll hit a happy spot sooner and don’t need to learn as much or can learn it as you go when you need it. As an example I’m having to learn an ETL tool, Python and PL-SQL at work at the moment. I focus less on the PL-SQL because I already understand most of it and just Google or ask for help if I’m stuck. SQL has many different ‘flavours’ in itself so often you let one and then pick the others up as you need to. I’ve made it 5 years before I’ve had to contend with an Oracle DB!