MySQL UPDATE, Alias Column Syntax, MySQL NULL Values
mysql -e 'select * from base2.Orders'
SELECT * FROM Orders;
USE base2
UPDATE Orders
SET Details = 'Road Jack'
WHERE Details = 'NEVER TOO MUCH';
SELECT * FROM Orders;
UPDATE Orders
SET Details = 'CHILLY CHA CHA'
WHERE Id = 1;
SELECT * FROM Orders;
********************************
SELECT column_name AS alias_name
FROM table_name;
SELECT * FROM Orders;
+----+------------+------------+--------------------+
| Id | CustomerId | CreatedAt | Details |
SELECT column_name AS alias_name
FROM table_name;
SELECT Id AS SuperID,
CustomerId AS SuperCustomerId,
CreatedAt AS SuperCreatedAt,
Details AS SomeComponents
FROM Orders;
*********************************
INSERT Orders(CustomerId, CreatedAt)
VALUES (1, Now());
SELECT * FROM Orders;
SELECT *
FROM Orders
WHERE Details IS NULL;
SELECT *
FROM Orders
WHERE Details IS NOT NULL;
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