MariaDB 10.3

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CREATE TABLE operations (
    id int auto_increment primary key,
    campaign VARCHAR(255),
    country VARCHAR(255),
    sales_status VARCHAR(255),
    quantity INT
);

INSERT INTO operations
(campaign, country, sales_status, quantity
)
VALUES 
("C001", "DE", "demand", "100"),
("C001", "US", "shipped", "300"),
("C001", "NL", "shipped", "700"),
("C001", "FR", "shipped", "400"),

("C002", "DE", "demand", "500"),
("C002", "US", "demand", "900"),
("C002", "FR", "shipped", "200"),

("C003", "US", "demand", "600"),
("C003", "NL", "demand", "250"),
("C003", "FR", "demand", "150"),
("C003", "PL", "demand", "550"),

("C004", "DE", "shipped", "825"),
("C004", "PL", "shipped", "462");
SELECT 
  campaign,
  COALESCE(
    MAX(CASE WHEN sales_status = 'shipped' THEN sales_status END), 
    MAX(sales_status)
  ) sales_status,
  SUM(quantity) total
FROM operations
GROUP BY campaign;


campaign
sales_status
total


C001
shipped
1500

C002
shipped
1600

C003
demand
1550

C004
shipped
1287


SELECT DISTINCT 
  campaign,
  FIRST_VALUE(sales_status) OVER (PARTITION BY campaign ORDER BY sales_status = 'shipped' DESC) sales_status,
  SUM(quantity) OVER (PARTITION BY campaign) total
FROM operations  


campaign
sales_status
total


C001
shipped
1500

C002
shipped
1600

C003
demand
1550

C004
shipped
1287