I want to create a database table which will have multiply information. One of these information is phones. How can I create a database table that inside the phones column will contain let's say sub-columns, because a user may have more than one phone and be stored in the same row for the same ID.
Below is an image of what I mean and how I want my table to be...
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MS SQL Server 2017 Schema Setup:
create table my_user (
ID int primary key,
FirstName varchar(255),
LastName varchar(255),
address varchar(max)
)
create table user_phones (
ID int primary key,
userId int references my_user(ID),
countrycode int,
phone varchar(max),
type varchar(255)
)
INSERT INTO my_user(ID,FirstName,LastName,address) VALUES(1,'test','test','test');
INSERT INTO user_phones(ID,userId,countrycode,phone,type)VALUES(1,1,99,'000099900','mobile');
INSERT INTO user_phones(ID,userId,countrycode,phone,type)VALUES(2,1,99,'99900000','home');
INSERT INTO user_phones(ID,userId,countrycode,phone,type)VALUES(3,1,99,'000009999','fax');
Query 1:
select * from my_user u
left join user_phones p on u.ID=p.userId
| ID | FirstName | LastName | address | ID | userId | countrycode | phone | type |
|----|-----------|----------|---------|----|--------|-------------|-----------|--------|
| 1 | test | test | test | 1 | 1 | 99 | 000099900 | mobile |
| 1 | test | test | test | 2 | 1 | 99 | 99900000 | home |
| 1 | test | test | test | 3 | 1 | 99 | 000009999 | fax |