mysql 内连接查询

Question

having problems with the following inner joins query on my products table -->>

SELECT   products.prod_id, products.prod_name, products.price, suppliers.company_name, customers.phone,
     FROM products
     INNER JOIN suppliers
     ON suppliers.supp_id = suppliers.supp_ID;

Answer 1

You are joining on suppliers.supp_id = suppliers.supp_ID;

Both from the suppliers table... you want an attribute from the product table. Something like:

products.supp_id = suppliers.supp_ID;

Which will result in the following query:

    SELECT   
       products.prod_id, 
       products.prod_name, 
       products.price, 
       suppliers.company_name, 
       customers.phone
    FROM 
       products
    INNER JOIN 
       suppliers
    ON 
       products.supp_id = suppliers.supp_ID;