Where can I learn more

[Paul Hemans]

Where can I learn more about creating a dialect for SQLalchemy? I
could just copy one of the existing dialects, but I don't know what I
am looking for in what needs to be changed. I need a kind of high
level view of how it all fits together.
Essential SQLalchemy doesn't seem to cover it. Can anyone point me to
some info?

Thanks

[Michael Bayer]

Essential SQLAlchemy unfortunately is out of date in most areas and certainly with regards to dialect creation (as a note to anyone reading this, we are interested in authors for a new SQLAlchemy book, already signed to a major publisher, if anyone has 8 months of time to spare) .

someone had a good intro to how to write a dialect at SO:

http://stackoverflow.com/questions/1674841/how-do-i-write-an-external-dialect-for-sqlalchemy

Also some README's that are in the dist include:

README.unittests
lib/sqlalchemy/dialects/type_migration_guidelines.txt

and of course the ASCII art at:

http://www.sqlalchemy.org/docs/dbengine.html

A good, simple dialect to start with as a guide is the SQLite/pysqlite dialects in lib/sqlalchemy/dialects/sqlite. The Firebird dialect is quite simple too, and Postgresql is fairly digestible as well. The MySQL and MS-SQL dialects are a little crazy in some regards.

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