Do a search in data base

Need help Database
1

Hi. I want to add a selected product to a data base (name, price and quantity). If the product is selected again I want to find that product and update quantity only. I am trying to do this:

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in order to not add a new product. I also need help on how update quantity only.

Thanks in advance.

2

Provide a link to a copy of your project and I will help you.

3

Thanks

4

I created a new page and a new cart table that should do what you are looking for.