SQL-Code/Stored Procedures.sql at 56d9add2029b1a71288e196bf09d1c38ca4b08fb · AlexTheAnalyst/SQL-Code · 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
/*
Today's Topic: Improved Stored Procedures
*/

-- Procedure 1: Show summary by JobTitle
CREATE OR ALTER PROCEDURE dbo.Temp_Employee
AS
BEGIN
    SET NOCOUNT ON;

    DROP TABLE IF EXISTS #temp_employee;

    CREATE TABLE #temp_employee (
        JobTitle NVARCHAR(100),
        EmployeesPerJob INT,
        AvgAge INT,
        AvgSalary INT
    );

    INSERT INTO #temp_employee (JobTitle, EmployeesPerJob, AvgAge, AvgSalary)
    SELECT
        emp.JobTitle,
        COUNT(*) AS EmployeesPerJob,
        AVG(emp.Age) AS AvgAge,
        AVG(sal.Salary) AS AvgSalary
    FROM SQLTutorial..EmployeeDemographics emp
    INNER JOIN SQLTutorial..EmployeeSalary sal
        ON emp.EmployeeID = sal.EmployeeID
    GROUP BY emp.JobTitle;

    SELECT * FROM #temp_employee;
END
GO

-- Procedure 2: Filter by JobTitle
CREATE OR ALTER PROCEDURE dbo.Temp_Employee_ByTitle
    @JobTitle NVARCHAR(100)
AS
BEGIN
    SET NOCOUNT ON;

    DROP TABLE IF EXISTS #temp_employee;

    CREATE TABLE #temp_employee (
        JobTitle NVARCHAR(100),
        EmployeesPerJob INT,
        AvgAge INT,
        AvgSalary INT
    );

    INSERT INTO #temp_employee (JobTitle, EmployeesPerJob, AvgAge, AvgSalary)
    SELECT
        emp.JobTitle,
        COUNT(*) AS EmployeesPerJob,
        AVG(emp.Age) AS AvgAge,
        AVG(sal.Salary) AS AvgSalary
    FROM SQLTutorial..EmployeeDemographics emp
    INNER JOIN SQLTutorial..EmployeeSalary sal
        ON emp.EmployeeID = sal.EmployeeID
    WHERE emp.JobTitle = @JobTitle
    GROUP BY emp.JobTitle;

    SELECT * FROM #temp_employee;
END
GO

-- Example calls
EXEC dbo.Temp_Employee;
EXEC dbo.Temp_Employee_ByTitle @JobTitle = 'Salesman';
EXEC dbo.Temp_Employee_ByTitle @JobTitle = 'Accountant';