I'm doing a package tracking feature for the website of a delivery service out here. I'm trying to perform an inner join based on the success of an if statement in my sql query. However i keep ...

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

In this SQL Server tip, Arthur Fuller explains the effects of NULLs, and the different results obtained by inner and outer JOINs.