Thank you - i think it is a solution
SA's Constraint types have support for generating a deferrable key at
CREATE TABLE table:
http://www.sqlalchemy.org/docs/05/sqlalchemy_schema.html#docstrings_s...
I believe you can either define the cyclic constraints as initially
deferred for this
On Sep 24, 2008, at 12:11 PM, jason kirtland wrote:
SA's Constraint types have support for generating a deferrable key at
CREATE TABLE table:
http://www.sqlalchemy.org/docs/05/sqlalchemy_schema.html#docstrings_sqlalchemy.schema_Constraint
I believe you can either define the cyclic
And how can you do this via explicit SQL?
On 23 сент, 18:32, mraer [EMAIL PROTECTED] wrote:
Suppose I have two classes of objects which have a reference to each
other:
Class A:
b
Class B:
a
Both references are mandatory so nullable = False
I use post_update = True in relation function
I think it depends on specific DB. In DBs I can start checking
constraints after comitting a transaction, I think.
On Sep 23, 6:58 pm, Alex K [EMAIL PROTECTED] wrote:
And how can you do this via explicit SQL?
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On Sep 23, 2008, at 10:32 AM, mraer wrote:
Suppose I have two classes of objects which have a reference to each
other:
Class A:
b
Class B:
a
Both references are mandatory so nullable = False
I use post_update = True in relation function and use_alter = True in
ForeignKey
