A common SQL habit is to use SELECT * on a query, because it’s tedious to list all the columns you need. Plus, sometimes those columns may change over time, so why not just do things the easy way? But ...

Boost your SQL interview readiness with these 35 carefully selected SQL Interview Questions and Answers. Includes real-world ...

As any database admin knows, mastering the subtler nuances of SQL can be likened to the black arts. For me, tuning the efficiency of SQL queries on large, heavily used databases is a perfect example.