Re: Duplicate data even with primary keys enabled

Am 28.10.22 um 22:15 schrieb Teju Jakkidi vlogs:
> Hello Jakobs,
>
> I have provided the sample create table and inserts that we are
> observing.
>
> CREATE TABLE IF NOT EXISTS "TEST"
> (
>     "COL1" character varying(9) COLLATE pg_catalog."default" NOT NULL,
>     "COL2" character varying(30) COLLATE pg_catalog."default" NOT NULL,
>     "COL3" character varying(30) COLLATE pg_catalog."default" NOT NULL,
>     "COL4" numeric(10,0) NOT NULL,
>     "COL5" character varying(12) COLLATE pg_catalog."default" NOT NULL,
>     "COL6" character varying(12) COLLATE pg_catalog."default" NOT NULL,
>     CONSTRAINT test_pk PRIMARY KEY ("COL1", "COL2", "COL3")
> )
>
> CREATE UNIQUE INDEX IF NOT EXISTS "TEST_UNIQUE"
>     ON "TEST" USING btree
>     ("COL1" COLLATE pg_catalog."default" ASC NULLS LAST, "COL2"
> COLLATE pg_catalog."default" ASC NULLS LAST, "COL3" COLLATE
> pg_catalog."default" ASC NULLS LAST);
>
> CREATE INDEX IF NOT EXISTS "TEST_INDEX"
>     ON "TEST" USING btree
>     ("COL1" COLLATE pg_catalog."default" ASC NULLS LAST, "COL3"
> COLLATE pg_catalog."default" ASC NULLS LAST);
>
> *_Also, the values that we are seeing is as below:_*
>
> COL1 COL2 COL3 COL4 COL5 COL6
> 1 3456 76542 5 ABC 1234
> 1 3456 76542 5 ABC 1234
> 2 9872 89765 0 FGT 1234
> 3 6547 78659 7 JHL 8790
>
>
> We already defined COL1, COL2, COL3 as primary keys, but still as you
> see above in the table output, the first 2 rows has exactly same
> combination for those 3 rows.
>
> Thanks,
> Teja.
>
>
I just copied your CREATE TABLE statement (with all peculiarities like
quoted identifiers):

hj=# CREATE TABLE IF NOT EXISTS "TEST"
hj-# (
hj(#     "COL1" character varying(9) COLLATE pg_catalog."default" NOT NULL,
hj(#     "COL2" character varying(30) COLLATE pg_catalog."default" NOT NULL,
hj(#     "COL3" character varying(30) COLLATE pg_catalog."default" NOT NULL,
hj(#     "COL4" numeric(10,0) NOT NULL,
hj(#     "COL5" character varying(12) COLLATE pg_catalog."default" NOT NULL,
hj(#     "COL6" character varying(12) COLLATE pg_catalog."default" NOT NULL,
hj(#     CONSTRAINT test_pk PRIMARY KEY ("COL1", "COL2", "COL3")
hj(# )
hj-# ;

CREATE TABLE

Trying to insert the same row twice results in an error:

hj=# insert into "TEST" values (1,3456, 76542, 5, 'ABC', '1234');
INSERT 0 1
hj=# insert into "TEST" values (1,3456, 76542, 5, 'ABC', '1234');
FEHLER:  doppelter Schlüsselwert verletzt Unique-Constraint »test_pk«
DETAIL:  Schlüssel »("COL1", "COL2", "COL3")=(1, 3456, 76542)« existiert
bereits.

So you'll have to check what you are doing differently.

--
Holger Jakobs, Bergisch Gladbach, Tel. +49-178-9759012