SQL-Learnings/SET OPERATORS.sql at main · SahaAkash-Me/SQL-Learnings · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
/*
UNION
UNION ALL
EXCEPT
INTERSECT
*/
												-- UNION OPERATOR --
SELECT
	FirstName AS FN,
	LastName AS LN
FROM Sales.Customers
UNION
SELECT
	FirstName,
	LastName
FROM Sales.Employees
ORDER BY FirstName;
												-- UNION ALL OPERATOR {Deosn'T Remove Duplicates} --
SELECT
	FirstName AS FN,
	LastName AS LN
FROM Sales.Customers
UNION ALL
SELECT
	FirstName,
	LastName
FROM Sales.Employees;
												-- EXCEPT OPERATOR --

 SELECT
	FirstName AS FN,
	LastName AS LN
FROM Sales.Employees
EXCEPT
SELECT
	FirstName,
	LastName
FROM Sales.Customers;


 SELECT
	FirstName AS FN,
	LastName AS LN
FROM Sales.Customers
EXCEPT
SELECT
	FirstName,
	LastName
FROM Sales.Employees;
												-- INTERSECT OPERATOR --
SELECT
	FirstName AS FN,
	LastName AS LN
FROM Sales.Employees
INTERSECT
SELECT
	FirstName,
	LastName
FROM Sales.Customers;

SELECT
		'Orders' AS Source_Table,      -- THIS IS A STATIC COLUMN IN ORDER TO SEE THE SOURCE OF THE TABLE --
		[OrderID]
      ,[ProductID]
      ,[CustomerID]
      ,[SalesPersonID]
      ,[OrderDate]
      ,[ShipDate]
      ,[OrderStatus]
      ,[ShipAddress]
      ,[BillAddress]
      ,[Quantity]
      ,[Sales]
      ,[CreationTime]
FROM Sales.Orders
UNION
SELECT
	'Orders_Archive' AS Source_Table,    -- THIS IS A STATIC COLUMN IN ORDER TO SEE THE SOURCE OF THE TABLE --
	[OrderID]
      ,[ProductID]
      ,[CustomerID]
      ,[SalesPersonID]
      ,[OrderDate]
      ,[ShipDate]
      ,[OrderStatus]
      ,[ShipAddress]
      ,[BillAddress]
      ,[Quantity]
      ,[Sales]
      ,[CreationTime]
FROM Sales.OrdersArchive
ORDER BY OrderID;