From the following table, create a view to find all the customers who have the highest grade

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 From the following table, create a view to find all the customers who have the highest grade. Return all the fields of customer.

 

Sample table: customer

 customer_id |   cust_name    |    city    | grade | salesman_id 
-------------+----------------+------------+-------+-------------
        3002 | Nick Rimando   | New York   |   100 |        5001
        3007 | Brad Davis     | New York   |   200 |        5001
        3005 | Graham Zusi    | California |   200 |        5002
        3008 | Julian Green   | London     |   300 |        5002
        3004 | Fabian Johnson | Paris      |   300 |        5006
        3009 | Geoff Cameron  | Berlin     |   100 |        5003
        3003 | Jozy Altidor   | Moscow     |   200 |        5007
        3001 | Brad Guzan     | London     |       |        5005

الأجوبة

CREATE VIEW highgrade
  AS SELECT *
  FROM customer
  WHERE grade =
    (SELECT MAX (grade)
     FROM customer);

output:

sqlex=# select * from highgrade;
 customer_id |   cust_name    |  city  | grade | salesman_id 
-------------+----------------+--------+-------+-------------
        3008 | Julian Green   | London |   300 |        5002
        3004 | Fabian Johnson | Paris  |   300 |        5006
(2 rows)
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أسئلة مشابهة

From the following tables, write a SQL query to find those customers where each customer has a grade and served by at least a salesperson
From the following tables, create a view to find the salesperson who handles a customer who makes the highest order of a day
From the following tables, write a SQL query to find those salespeople who generated orders for their customers but not located in the same city
From the following tables write a SQL query to list all salespersons along with customer name, city, grade, order number, date, and amount

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