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Compatible data type add FK

Hi
I'm trying to create the tables below, and it's time to create the FK, I'm getting a error below. I didn't get what may be wrong and why it's not compatible data type.
CREATE TABLE t_agendamento_exames (
cd_agendamento NUMBER GENERATED BY DEFAULT AS IDENTITY,
t_consulta_cd_consulta VARCHAR2(30) NOT NULL,
t_exames_cd_exame VARCHAR2(30) NOT NULL,
ds_exame VARCHAR2(250),
obs_exames VARCHAR2(250)
);
ALTER TABLE t_agendamento_exames ADD CONSTRAINT t_agendamento_exames_pk PRIMARY KEY ( cd_agendamento );
CREATE TABLE t_consulta (
cd_consulta NUMBER GENERATED BY DEFAULT AS IDENTITY,
t_medico_cd_medico VARCHAR2(30) NOT NULL,
t_paciente_cd_paciente VARCHAR2(30) NOT NULL,
hr_inicio TIMESTAMP WITH TIME ZONE NOT NULL,
hr_termino TIMESTAMP WITH TIME ZONE NOT NULL,
dt_hr_consulta DATE NOT NULL,
nr_consultorio VARCHAR2(30),
ob_observação_consulta VARCHAR2(300)
);
ALTER TABLE t_consulta ADD CONSTRAINT t_consulta_pk PRIMARY KEY ( cd_consulta );
ALTER TABLE t_agendamento_exames
ADD CONSTRAINT t_agend_ex_t_cons_fk FOREIGN KEY ( t_consulta_cd_consulta )
REFERENCES t_consulta ( cd_consulta );
Answers
-
I just noticed FK was Varchar2 type.
-
Please flag your post as "andwered".
Also, it would be nice if you highlight your code as code.