I am writing a query which is aggregating some data from one database into a separate database.<BR><BR>Basically, I have a query which returns 3 columns and I have a query that returns 1 ...

Analyze database contents using basic, intermediate and advanced SQL statement syntax and usage. Demonstrate capability to query data from multiple tables using SQL JOINS. Create and modify database ...

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 ...