Introducing SQL Set Operators: Union, Union All, Minus, and Intersect

set operators

When you need to combine information from multiple tables or queries, SQL set operators are a useful tool. SQL queries let us choose the most important bits from large amounts of information. Of course, we can’t expect that all necessary data will be stored in one table. Let’s say we want to present every aspect of some key data group in one results table (e.g. making a report with the names of every customer served by every department of a

Continue Reading

GET ACCESS TO EXPERT SQL CONTENT!