Oracle SQL Developer allows you to connect and manage databases. It is probably the easiest way to run any query as it gives the result in a tabular format. However, we have also noticed that, in some ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

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 ...