First off, use DBIx::Class (or Rose::DB). An ORM solves most of the issues because the maintainers work really really hard to make sure it's DB-independent. While there are dozens of ORMs on CPAN, DBIC and Rose are the best two, imho. Jifty, Alzabo, and Tangram are written by good devs, but they don't have the team support that DBIC does or the single-minded insanity that the author of Rose has.
Second, use a phrasebook for the stuff you absolutely have to hand-write SQL for. There's several on CPAN and one of the better ones was recommended already.
My criteria for good software:
- Does it work?
- Can someone else come in, make a change, and be reasonably certain no bugs were introduced?
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