[Sqlalchemy-tickets] Issue #3603: state change of insert() construct when column-level generator is used (zzzeek/sqlalchemy)

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

New issue 3603: state change of insert() construct when column-level generator is used
https://bitbucket.org/zzzeek/sqlalchemy/issues/3603/state-change-of-insert-construct-when

Mike Bayer:

stack trace for reserved bind names only on the second go, meaning the insert() has changed state upon compile():



```
#!python

import sqlalchemy as sa

meta = sa.MetaData()
table = sa.Table('mytable', meta,
    sa.Column('foo', sa.String),
    sa.Column('bar', sa.String, default='baz'),
)

select = sa.select([table.c.foo])
insert = table.insert().from_select(['foo'], select)

print insert.compile()
print insert.compile()
```