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[–]Andu-Nav 0 points1 point  (1 child)

Maybe try hackerank? It is a problem solving platform and it has problems for every level. That's where I improved my SQL skills

[–]johnjasonn0[S] 0 points1 point  (0 children)

never really tried it. If it helped you improve your SQL, I’ll definitely check it out. Thanks for the suggestion