Hi,
I'm using the autodoc regression database available at
http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/autodoc/autodoc/regressdatabase.sql?rev=1.2&content-type=text/x-cvsweb-markup
This has several schemas that have cross-schema foreign key constraints
such as the following:
autodoc=> \d product.product
Table "product.product"
Column | Type | Modifiers
---------------------+---------+----------------------------------------------------------------------
product_id | integer | not null default
nextval('product.product_product_id_seq'::regclass)
product_code | text | not null
product_description | text |
Indexes:
"product_pkey" PRIMARY KEY, btree (product_id)
"product_product_code_key" UNIQUE, btree (product_code)
Check constraints:
"product_product_code_check" CHECK (product_code = upper(product_code))
Referenced by:
TABLE "store.inventory" CONSTRAINT "inventory_product_id_fkey"
FOREIGN KEY (product_id) REFERENCES product.product(product_id) ON
UPDATE CASCADE ON DELETE RESTRICT
TABLE "warehouse.inventory" CONSTRAINT "inventory_product_id_fkey"
FOREIGN KEY (product_id) REFERENCES product.product(product_id) ON
UPDATE CASCADE ON DELETE RESTRICT
I'm using this to validate a tool I'm building and I get an error on the
following query:
autodoc=> SELECT conname::regclass FROM pg_constraint
autodoc-> WHERE contype = 'u';
ERROR: relation "product_product_code_key" does not exist
The 8.4 documentation says:
The regclass input converter handles the table lookup according to the
schema path setting, and so it does the "right thing" automatically.
My search path is the default "$user", public and I'm only able to avoid
the error if I set the search_path to cover all the schemas, e.g.,
autodoc=> set search_path to "$user", public, product, store, warehouse;
SET
autodoc=> SELECT conname::regclass FROM pg_constraint
WHERE contype = 'u';
conname
------------------------------------
product_product_code_key
store_store_code_key
warehouse_warehouse_code_key
warehouse_warehouse_supervisor_key
(4 rows)
I would've thought that the "right thing" would have involved prepending
the schema to the constraint name, e.g.,
product.product_product_code_key as is done for the table names in the
\d output. Is this a bug or does regclass only do the "right thing" for
tables and not for constraints?
Joe
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