I just ran this quick test in HEAD:

alvherre=# create table study (id int primary key);
NOTICE:  CREATE TABLE / PRIMARY KEY creará el índice implícito «study_pkey» 
para la tabla «study»
CREATE TABLE
alvherre=# insert into study select a from generate_series(1, 1000000) as a;
INSERT 0 1000000
alvherre=# create table studyform (id int primary key, study_id int not null 
references study);
NOTICE:  CREATE TABLE / PRIMARY KEY creará el índice implícito «studyform_pkey» 
para la tabla «studyform»
CREATE TABLE
alvherre=# insert into studyform select a, 1 + a * random() from 
generate_series(1, 100000) a;
INSERT 0 100000

and was very surprised to see that the foreign key is marked as NOT
VALID:

alvherre=# \d studyform
      Tabla «public.studyform»
 Columna  │  Tipo   │ Modificadores 
──────────┼─────────┼───────────────
 id       │ integer │ not null
 study_id │ integer │ not null
Índices:
    "studyform_pkey" PRIMARY KEY, btree (id)
Restricciones de llave foránea:
    "studyform_study_id_fkey" FOREIGN KEY (study_id) REFERENCES study(id) NOT 
VALID


Is this really intended?

-- 
Álvaro Herrera <alvhe...@alvh.no-ip.org>

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