Convert UPDATE with INNER JOIN from SQL for use in MySQL

Question

I\'d like to convert this for us in MySQL:

UPDATE product 
SET price = 12.95 
FROM product 
    INNER JOIN product_to_category ON product.product_id = produc         


        

Answer 1

The general syntax for a multiple-table UPDATE statement is

UPDATE 
    (INNER|LEFT|RIGHT|...) JOIN  ON  
SET =
WHERE 


So your statement should work if you rewrite it to

UPDATE product 
    INNER JOIN product_to_category ON product.product_id = product_to_category.product_id
    INNER JOIN category ON product_to_category.category_id = category.category_id AND category.parent_id = 39
SET price = 12.95 


(untested, I don't have a mysql instance at hand)
    

             

                                                        
            
            

              
                
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