[Sqlalchemy-tickets] Issue #3835: invalid autoincrement setting can be reflected, causing failures (zzzeek/sqlalchemy)

[Michael B. <iss...@bi...>]

New issue 3835: invalid autoincrement setting can be reflected, causing failures
https://bitbucket.org/zzzeek/sqlalchemy/issues/3835/invalid-autoincrement-setting-can-be

Michael Bayer:


```
#!python

from sqlalchemy import *

m = MetaData()
t = Table(
    't', m,
    Column(
        'x', Integer, primary_key=True)
)


e = create_engine("postgresql://scott:tiger@localhost/test", echo=True)
m.drop_all(e)
m.create_all(e)

e.execute("alter table t alter column x type varchar(50)")

m2 = MetaData()
t2 = Table('t', m2, autoload_with=e)

from sqlalchemy.schema import CreateTable

print CreateTable(t2)
```

output:

    sqlalchemy.exc.ArgumentError: Column type VARCHAR(50) on column 't.x' is not compatible with autoincrement=True