Finding the Max Value Across Multiple Columns

Erik Darling shows a couple techniques for finding the maximum value across several columns, whether they’re in one table or in more than one:

It’s sorta kinda pretty crazy when every major database platform has something implemented, and SQL Server doesn’t.

Geez, even MySQL.

But a fairly common need in databases is to find the max value from two columns.

Maybe even across two tables.

Read on to see how you can do this.