Need help in merging three tables foreign keys - mysql

Question

I have created three tables like this,
1.
CREATE TABLE person (
id int NOT NULL AUTO_INCREMENT,
name varchar(50) NOT NULL,
age int,
PRIMARY KEY (id)
);
2.
CREATE TABLE address (
id int NOT NULL AUTO_INCREMENT,
city varchar(50) NOT NULL,
post_code int NOT NULL,
person_id int NOT NULL,
PRIMARY KEY (id),
FOREIGN KEY (person_id) REFERENCES person(id)
);
3
CREATE TABLE subjects (
id int NOT NULL AUTO_INCREMENT,
subjects_s varchar(50) NOT NULL,
address_id int NOT NULL,
PRIMARY KEY (id),
FOREIGN KEY (address_id) REFERENCES address(id)
);
Now in tables i have some informations like this:
person
+----+--------+------+
| id | name | age |
+----+--------+------+
| 1 | Sohan | 17 |
| 2 | Farhan | 18 |
+----+--------+------+
address
+----+-------+-----------+-----------+
| id | city | post_code | person_id |
+----+-------+-----------+-----------+
| 1 | Tongi | 1711 | 1 |
| 2 | Dhaka | 1230 | 2 |
+----+-------+-----------+-----------+
subjects
+----+--------------------+------------+
| id | subjects_s | address_id |
+----+--------------------+------------+
| 1 | Accounting Finance | 1 |
| 2 | Physics Math | 2 |
+----+--------------------+------------+
Now I want to show all these data together. How can I do this? Please help!

Answer 1

You should be able to use a SQL join statement to combine these.
The syntax is detailed in the MySQL join documentation.
With your tables, your query should look something like this:
SELECT person.*, address.*, subjects.*
FROM person
JOIN address ON person.id = address.person_id
JOIN subjects ON address.id = subjects.address_id
Keep in mind, this example uses an inner join, which may not be the right type of join depending on the data in your tables. I'd recommend reading the documentation I linked above for further guidance.