MySQLI - 在一个查询中更新具有不同值的多行

Question

I am trying to understand how to UPDATE multiple rows with different values and I just don't get it.

cache_id cache_user_email cache_number cache_final_price

I want to update two fields in different rows recorded with the same email

(Code added from comment to answer)

  $sql_update_cache_number = "UPDATE cache 
         SET cache_number='".$_POST['cache_number']."', 
             cache_final_price='".$per_product_price."' 
         WHERE cache_product_id='".$row_add_to_cart['product_id']."' 
              AND cache_user_email='".$_SESSION['email']."'"; 
  mysqli_query($conn, $sql_update_cache_number);

Answer 1

You really should post your code together with your question.

To update a value with (My)SQL you are maybe looking for a statement like UPDATE your_table SET cache_number=1, cache_final_price=3 WHERE cache_user_email = 'user@isp.com'

What this does is searching all rows with cache_user_email = 'user@isp.com' and updating the values of cache_number and cache_final_price .