Question

I have 3 tables:

create table user (
    user_id integer primary key autoincrement,
    username string not null,
    email string not null,
    pw_hash string not null
);


create table product (
    product_id integer primary key autoincrement,
    productname string not null,
    productdescription string not null,
);

create product_review (
    product_id integer,
    user_id integer,
    review,
);

Now, I want to display all the reviews from user_id=1. A simple query for this would be
select * from product_review where user_id = 1

However, I want the data listed as –>

username  productname review
John      iPad3       Super awesome
John      SonyVaio    Even more awesome

Answer 1

Try this:

SELECT username, productname, review
  FROM user a INNER JOIN product_review pr
    ON a.user_id = pr.user_id INNER JOIN product p
    ON p.product_id = pr.product_id
 WHERE a.user_id = 1