Is there any reason to worry about the column order in a table?

Question

I know you can ALTER the column order in MySQL with FIRST and AFTER, but why would you want to bother? Since good queries explicitly name columns when inserting data, is the

Answer 1

During Oracle training at a previous job, our DBA suggested that putting all the non-nullable columns before the nullable ones was advantageous... although TBH I don't remember the details of why. Or maybe it was just the ones that were likely to get updated should go at the end? (Maybe puts off having to move the row if it expands)

In general, it shouldn't make any difference. As you say, queries should always specify columns themselves rather than relying on the ordering from "select *". I don't know of any DB that allows them to be changed... well, I didn't know MySQL allowed it until you mentioned it.