最好的MySQL方式将数据从表移动到另一个带结点的方法

Question

I have a SQL table called members

| member_id | first_name | last_name | email                      | password | phone_number | country |
|-----------|------------|-----------|----------------------------|----------|--------------|---------|
| 1         | John       | Doe       | john.doe@rambo.vid         | 123456   | 654789159    | en_US   |
| 2         | Jules      | Ferry     | jules.ferry@politician.old | 456789   |              | fr_FR   |

I would like to create a new table users and move data with user_id as junture like this :

users

| user_id | first_name | last_name | email                      | password |
|---------|------------|-----------|----------------------------|----------|
| 1       | John       | Doe       | john.doe@rambo.vid         | 123456   |
| 2       | Jules      | Ferry     | jules.ferry@politician.old | 456789   |

members

| member_id | user_id | phone_number | country |
|-----------|---------|--------------|---------|
| 1         | 1       | 654789159    | en_US   |
| 2         | 2       |              | fr_FR   |

What is the best way (more efficient execution) in MySQL to modify the existing database ?

Answer 1

Here is what I am thinking:

INSERT INTO users ( user_id, member_id, first_name, last_name, email, password)
    SELECT <user_id>, -- Wherever this needs to come from or remove if its generated.
         member_id, first_name, last_name, email, password
    FROM members;

Followed by:

UPDATE members m INNER JOIN users u
    ON m.member_id = u.member_id 
    SET m.user_id = u.user_id

I have added the member_id field in the users table which you don't have. If you don't have the option to do that then you can use the other identifiers to join the table.