Db2, SQL, and Modern Coding Techniques

 Mainframe application development has changed dramatically during the lifetime of Db2. Way back in the beginning, and even for a long time thereafter, most Db2 programs were written in COBOL and coded to use static SQL. This meant that the SQL was bound before...

SQL to Return the nth Maximum Value

Sometimes what seems like a simple request might take a little bit of thinking to devise and implement a solution. Recently, I was asked how to write SQL that returns the nth maximum value from a column. If you think about it, it isn't too difficult.Assume that you...

Deleting “n” Rows From a Db2 Table

I regularly receive database- and Db2-related questions via e-mail. And that is great, but I don't always get a chance to respond to everything. If you've sent me a question and I haven't replied, I apologize. But every now and then, I will use one of the e-mail...