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Databases

Posted by Sanjay Dulal
Sanjay Dulal
1,269 Points

We have an eCommerce database and it has a products table. It has the columns id, name, description and price.

INSERT INTO products (id, name, description, price) VALUES (NULL, "armand fandera", "this is test", "99.90"), (NULL, "armand fandera", "this is test", "99.90"), (NULL, "armand fandera", "this is test", "99.90"), (NULL, "armand fandera", "this is test", "99.90");

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

Could you provide a link to the course page you are working with, to allow us to analyze the issue?

4 Answers

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

You're inserting too many products.

Now that I see the challenge, the second sentence of the instructions is "Add a new product to the products table." That would mean one new product. But your original query adds four products.

But just for grins, I tried pasting your entire original query into the challenge — and it passed! It probably should not, and I have no idea why it works for me but did not work for you.

And what I meant by "completely omitting the id values" would look like this (and it also passes):

INSERT INTO products (name, description, price) VALUES ("armand fandera", "this is test", "99.90")
Sanjay Dulal
Sanjay Dulal
1,269 Points

thanks for great help.

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

Try omitting the NULL values.

Without seeing the challenge I'm guessing here, but I'm assuming the "id" field is an auto-increment field? Try leaving it off completely in the values instead of using "NULL" as a placeholder.

Sanjay Dulal
Sanjay Dulal
1,269 Points

Let me check

Sanjay Dulal
Sanjay Dulal
1,269 Points

`INSERT INTO products (id, name, description, price) VALUES ("NULL", "armand fandera", "this is test", "99.90"), ("NULL", "armand fandera", "this is test", "99.90"), ("NULL", "armand fandera", "this is test", "99.90"), ("NULL", "armand fandera", "this is test", "99.90");

SQL Error: datatype mismatch`

and i have check with this too : `INSERT INTO products (id, name, description, price) VALUES ("", "armand fandera", "this is test", "99.90"), ("", "armand fandera", "this is test", "99.90"), ("", "armand fandera", "this is test", "99.90"), ("", "armand fandera", "this is test", "99.90");

Was expecting 4 entries in the products table. There's only 3. ` Error came.

Sanjay Dulal
Sanjay Dulal
1,269 Points
Sanjay Dulal
Sanjay Dulal
1,269 Points

https://teamtreehouse.com/library/modifying-data-with-sql/adding-data-to-a-database/adding-data-with-sql

Robbie Thomas
Robbie Thomas
31,093 Points
Robbie Thomas
Robbie Thomas
31,093 Points

My first attempt at the challenge, I used a number for the ID and it told me no. So, by Steven Parker's answer, I omitted the NULL and I passed. This was just for the first challenge here.

On the second and third challenges, the NULL was accepted. Seems like they made a mistake with the first challenge.