object[] myArray = new object[] { 1,2,3};
ArrayList = new ArrayList(myArray);

COALESCE SQL

COALESCE(expression1,...n) is equivalent to this CASE expression:

SET NOCOUNT ON;
GO
USE tempdb;
IF OBJECT_ID('dbo.wages') IS NOT NULL
DROP TABLE wages;
GO
CREATE TABLE dbo.wages
(
emp_id tinyint identity,
hourly_wage decimal NULL,
salary decimal NULL,
commission decimal NULL,
num_sales tinyint NULL
);
GO
INSERT dbo.wages (hourly_wage, salary, commission, num_sales)
VALUES
(10.00, NULL, NULL, NULL),
(20.00, NULL, NULL, NULL),
(30.00, NULL, NULL, NULL),
(40.00, NULL, NULL, NULL),
(NULL, 10000.00, NULL, NULL),
(NULL, 20000.00, NULL, NULL),
(NULL, 30000.00, NULL, NULL),
(NULL, 40000.00, NULL, NULL),
(NULL, NULL, 15000, 3),
(NULL, NULL, 25000, 2),
(NULL, NULL, 20000, 6),
(NULL, NULL, 14000, 4);
GO
SET NOCOUNT OFF;
GO
SELECT CAST(COALESCE(hourly_wage * 40 * 52,
salary,
commission * num_sales) AS money) AS 'Total Salary'
FROM dbo.wages
ORDER BY 'Total Salary';
GOHere is the result set.

Total Salary

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

20800.0000

41600.0000

62400.0000

83200.0000

10000.0000

20000.0000

30000.0000

40000.0000

45000.0000

50000.0000

120000.0000

56000.0000

SQL right, left Modulo

declare @a int, @b int, @c int, @d int
select @a = 568788
select @b = left(@a,3)
select @c = right(left(@a,3),2)
select @d = right(left(@a,3),2)%10
SELECT @b, @c, @d

--Output
568 68 8