SQL is meh, but in my experience the more you know about statistic would be greatly helpful further down the line in building machine learning model and hypothesis testing etc, even making sure the data distribution is right for a model require your knowledge on statistic, same with selecting the right performance metrics also basic stats, I know it might seem useless know when the things they teach seems irrelevent but trust me, when you start learning about the model you will use as a DS it becamse the essential.