You forgot SQL::Generator ;)

The 'features' I'm most interested in are 1. dynamically creating where clauses with the module; not creating it myself with logic in the script and then passing the thing to the module, 2. being able to pass variables (such as column names) as a scalar or list, repeatedly to build up a bigger list. - Again, not using logic within the script to create an array or hash to pass to the module.

DBIx::SearchBuilder - The POD contains 2 instances of the word 'where' - both are in deprecated methods. I can't even be bothered reading the docs further.

Alzabo - While this does look interesting (I'd never come across it before) - a read of the Alzabo::SQLMaker and Alzabo::SQLMaker::MySQL docs doesn't reveal any indication of the kind of functionality I specified above.

DBIx::RecordSet - Again, it looks like a great module, but it unfortunately doesn't appear to meet my requirements.

SQL::Generator - As above. - I looked at the source of this before I started work on my own, and I think it's very nicely written but unfortunately doesn't have the kind of dynamic 'where' generation I'm after.

I'm aware that my attempt has a long way to go - particularly regarding blokhead's comments above, and I would certainly use any module that provided the functionality I'm after, if only I could find one.