Support sequences on TimescaleDB like on PostgreSQL

[MRigal]

Tiny fix, as else sqlacodegen is also working with TimescaleDB and timeseries hypertables

[agronholm]

Wait, what? There's a specific dialect for timescaledb despite it just being a postgresql extension?

[MRigal]

Not a real official dialect, but using this extension: https://github.com/dorosch/sqlalchemy-timescaledb gives some nice enhanced support for hypertables

[agronholm]

Does it improve the output of sqlacodegen when run against a database containing hypertables?

[MRigal]

I've just tested, the answer is "no". It probably misses in https://github.com/dorosch/sqlalchemy-timescaledb/blob/master/sqlalchemy_timescaledb/dialect.py additional features that would look for hypertables on some Inspector methods: https://docs.sqlalchemy.org/en/20/core/reflection.html#sqlalchemy.engine.reflection.Inspector

I'm not familiar enough with it to contribute directly, but if you are also interested and point me towards a possible implementation, I could submit a PR for it

[agronholm]

Ok, so is there any reason to run sqlacodegen with the timescaledb dialect instead of postgresql then?

[MRigal]

No other one than to use the same engine URL as elsewhere in the code