When I try to load the database metadata via reflection:
engine = create_engine(...)
metadata = MetaData()
metadata.bind = engine
metadata.reflect()
It successfully loads all the tables and columns present; however, it does
not appear to load the unique constraints as well. For example, I have a
table called "uid" in the database that is described as follows (Postgres):
CREATE TABLE uid (
userid bigint PRIMARY KEY DEFAULT nextval('userseq'),
firstname character varying(255),
initials character varying(255) UNIQUE,
lastname character varying(255)
);
The psql \d uid output shows that the unique constraint is indeed there:
Table "public.uid"
Column | Type | Modifiers
-----------+------------------------+---------------------------------------
--------
userid | bigint | not null default
nextval('userseq'::regclass)
firstname | character varying(255) |
initials | character varying(255) |
lastname | character varying(255) |
Indexes:
"uid_pkey" PRIMARY KEY, btree (userid)
"uid_initials_key" UNIQUE, btree (initials)
Is the SQLAlchemy "reflect" command just not designed to pick up these
unique constraints, or is there something I am missing?
Thank you!
Orest
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