Write a query to extract all data from the customer table if and only if one or more of the customers in the customer table are located in London

hamza

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2022-05-18

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Write a query to extract all data from the customer table if and only if one or more of the customers in the customer table are located in London.

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

Sql programming,

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hamza

2022-05-18

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SELECT customer_id,cust_name, city
FROM customer
WHERE EXISTS
   (SELECT *
    FROM customer 
    WHERE city='London');

Output of the Query:

customer_id	cust_name		city
3002		Nick Rimando		New York
3007		Brad Davis		New York
3005		Graham Zusi		California
3008		Julian Green		London
3004		Fabian Johnson		Paris
3009		Geoff Cameron		Berlin
3003		Jozy Altidor		Moscow
3001		Brad Guzan		London

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Write a query to extract all data from the customer table if and only if one or more of the customers in the customer table are located in London

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