Understanding how to optimize load processes in HQL/SQL for a better utilization of your cluster.
From time to time I dump some random knowledge to colleagues and I thought this is maybe also relevant for you : )
SQL is a highly structured language, which means it is important to stick to the rules. On the other hand, everything that is not forbidden — is allowed.
Usually, you will order a query like this:
But the order of execution is slightly different:
Data Engineer with a passion for games and beer ;D