stored procedure with cursor oracle

Tough Tamarin answered on August 17, 2022 Popularity 8/10 Helpfulness 2/10

answer stored procedure with cursor oracle

stored procedure with cursor oracle

Comment

DECLARE
  l_budget NUMBER := 1000000;
   -- cursor
  CURSOR c_sales IS
  SELECT  *  FROM sales  
  ORDER BY total DESC;
   -- record    
   r_sales c_sales%ROWTYPE;
BEGIN

  -- reset credit limit of all customers
  UPDATE customers SET credit_limit = 0;

  OPEN c_sales;

  LOOP
    FETCH  c_sales  INTO r_sales;
    EXIT WHEN c_sales%NOTFOUND;

    -- update credit for the current customer
    UPDATE 
        customers
    SET  
        credit_limit = 
            CASE WHEN l_budget > r_sales.credit 
                        THEN r_sales.credit 
                            ELSE l_budget
            END
    WHERE 
        customer_id = r_sales.customer_id;

    --  reduce the budget for credit limit
    l_budget := l_budget - r_sales.credit;

    DBMS_OUTPUT.PUT_LINE( 'Customer id: ' ||r_sales.customer_id || 
' Credit: ' || r_sales.credit || ' Remaining Budget: ' || l_budget );

    -- check the budget
    EXIT WHEN l_budget <= 0;
  END LOOP;

  CLOSE c_sales;
END;
Code language: SQL (Structured Query Language) (sql)

Popularity 8/10 Helpfulness 2/10 Language sql

Source: www.oracletutorial.com

Tags: cursor oracle procedure sql

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