You often need data that are stored in separate tables. For example, you may want to produce a report that gets information about flight delays from one table and boarding capacity from another.

I'm writing some code in C# where I need to (inner?) join two tables into a DataSet / DataTable.<BR><BR>Essentially, I have two tables. Both have columns called "TestId" and "OperationId". Both are ...

Multiple Detail Records - 4 in this case. (linked to the header record) Multiple Inventory Records - again, 4 - (each detail record points to one specific inventory record, but the inventory may be ...

RIGHT JOIN (or RIGHT OUTER JOIN): It’s the opposite of a LEFT JOIN. It keeps all rows from the right table and matches from the left. Less common than LEFT JOIN, but good to know it exists.

SQL is about as easy as it gets in the world of programming, and yet its learning curve is still steep enough to prevent many people from interacting with relational databases. Salesforce’s AI ...