Hello,
Sorry for delay... I had to go on leave..
Checked, it's our mistake here. The issue is not what I described, but in the replicated database where the constraint was not updated. Correcting the constraint there solved this issue.
Sorry for not checking properly before coming here.
Happiness Always
BKR Sivaprakash
On Monday, 22 August, 2022 at 03:54:30 pm IST, jian he <jian.universality@gmail.com> wrote:
Hello,
Using PG 11.4
We populate constraint string dynamically and add it to the table with alter table command. It gets added, but without the required brackets.
What we build is
ALTER TABLE public.tx_barcode_stock
ADD CONSTRAINT "tx_barcode_stock_CK1" CHECK
( (branchcode = '1'::bpchar and barcodeitem = 'Y'::bpchar and closingstock >= 0::numeric) Or (branchcode = '1' and barcodeitem = 'N'::bpchar and closingstock >= 0::numeric ) Or (branchcode = '2'::bpchar and barcodeitem = 'Y'::bpchar and closingstock >= 0::numeric) Or (branchcode = '2' and barcodeitem = 'N'::bpchar and closingstock >= 0::numeric ) ) NOT VALID;
After creation, when we check what we find is [ in PgAdmin ]
ALTER TABLE public.tx_barcode_stock
ADD CONSTRAINT "tx_barcode_stock_CK1" CHECK (branchcode::bpchar = '1'::bpchar AND barcodeitem = 'Y'::bpchar AND closingstock >= 0::numeric OR branchcode::text = '1'::text AND barcodeitem = 'N'::bpchar AND closingstock >= 0::numeric OR branchcode::bpchar = '2'::bpchar AND barcodeitem = 'Y'::bpchar AND closingstock >= 0::numeric OR branchcode::text = '2'::text AND barcodeitem = 'N'::bpchar AND closingstock >= 0::numeric)
NOT VALID;
We have only one bracket, in the final updated one.
Since there are AND and OR conditions, without brackets the whole conditions becomes useless.
How to create a constraint like the above one, with braces in tact ? Or any other way that we can implement a check constraint as above?
Happiness Always
BKR Sivaprakash
I guess it's because pgadmin uses pg_get_constraintdef ( constraint oid [, pretty boolean ] ) pretty is true.
if you use pg_get_constraintdef ( constraint oid ,false ) you will see more braces.
--
I recommend David Deutsch's <<The Beginning of Infinity>>
Jian
