On 12/7/20 12:19 PM, Thomas Kellerer wrote:
Ron schrieb am 07.12.2020 um 19:15:
Referenced by:
TABLE "sales_detail" CONSTRAINT "fk_sales_detail_sales_header"
FOREIGN KEY (cust_id, order_ts) REFERENCES sales_header(cust_id, order_ts) *DEFERRABLE*
I think if you only mention "deferrable" this is the same as "deferrable initially immediate",
so you will need to make them deferrable in your transaction:
SET CONSTRAINTS ALL DEFERRED;
or create the constraint with
deferrable initially deferred
Neither technique worked.
test=# ALTER TABLE sales_detail ALTER CONSTRAINT fk_sales_detail_sales_header DEFERRABLE INITIALLY DEFERRED;
ALTER TABLE
test=# \d sales_detail
Partitioned table "public.sales_detail"
Column | Type | Collation | Nullable | Default
--------------+-----------------------------+-----------+----------+---------
cust_id | integer | | not null |
order_ts | timestamp without time zone | | not null |
seq_no | integer | | not null |
inventory_id | integer | | |
quantity | numeric(10,2) | | |
price | numeric(10,2) | | |
tax_rate | numeric(3,3) | | |
Partition key: RANGE (order_ts)
Indexes:
"sales_detail_pkey" PRIMARY KEY, btree (cust_id, order_ts, seq_no)
Foreign-key constraints:
"fk_sales_detail_sales_header" FOREIGN KEY (cust_id, order_ts)
REFERENCES sales_header(cust_id, order_ts) DEFERRABLE INITIALLY DEFERRED
Number of partitions: 12 (Use \d+ to list them.)
test=# begin transaction;
BEGIN
test=# delete from sales_header where cust_id = 1;
ERROR: update or delete on table "sales_header_202001" violates foreign key constraint "sales_detail_cust_id_order_ts_fkey" on table "sales_detail"
DETAIL: Key (cust_id, order_ts)=(1, 2020-01-05 13:05:42.567) is still referenced from table "sales_detail".
test=# rollback;
ROLLBACK--
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