Wednesday, December 17, 2014

SQL: Increase/Decrease an amount of a field/column

For example, you have three fields (name  varchar2, price float, order integer) in the Fruit table. You now want to decrease  the price by 0.5 and increase the order by 5 for the Apple. Following is one way of doing it.

UPDATE Fruit
SET price = price - 0.5, order = order + 5
WHERE name = 'APPLE';

---------------------------------------------------------------------------------------------------------------

                        
If you have ever asked yourself these questions, this is the book for you. What is the meaning of life? Why do people suffer? What is in control of my life? Why is life the way it is? How can I stop suffering and be happy? How can I have a successful life? How can I have a life I like to have? How can I be the person I like to be? How can I be wiser and smarter? How can I have good and harmonious relations with others? Why do people meditate to achieve enlightenment? What is the true meaning of spiritual practice? Why all beings are one? Read the book free here.

No comments:

Post a Comment