-
Notifications
You must be signed in to change notification settings - Fork 0
/
order_by_exercise.sql
97 lines (72 loc) · 2.4 KB
/
order_by_exercise.sql
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
93
94
95
96
-- Modify your first query to order by first name.
-- The first result should be Irena Reutenauer and the last result should be Vidya Simmen.
SELECT * FROM employees
WHERE first_name = 'Irena'
OR first_name = 'Vidya'
OR first_name = 'Maya'
ORDER BY first_name;
-- Update the query to order by first name and then last name.
-- The first result should now be Irena Acton and the last should be Vidya Zweizig.
SELECT * FROM employees
WHERE first_name IN ('Irena', 'Vidya', 'Maya')
ORDER BY first_name, last_name;
-- Change the order by clause so that you order by last name before first name.
-- Your first result should still be Irena Acton but now the last result should be Maya Zyda.
SELECT * FROM employees
WHERE first_name IN ('Irena', 'Vidya', 'Maya')
ORDER BY last_name, first_name;
-- Update your queries for employees with 'E' in their last name to
-- sort the results by their employee number.
-- Your results should not change!
SELECT * FROM employees
WHERE last_name LIKE 'e%';
SELECT * FROM employees
WHERE last_name LIKE 'e%' OR last_name LIKE '%e'
ORDER BY emp_no DESC;
SELECT * FROM employees
WHERE last_name LIKE 'e%' AND last_name LIKE '%e';
ORDER BY last_name DESC;
-- Last name starts with "e" and ends with "e"
SELECT * FROM employees
WHERE last_name LIKE 'e%e'
ORDER BY emp_no DESC;
-- Change the query for employees hired in the 90s and born on Christmas
-- first result is the oldest employee who was hired last.
-- It should be Khun Bernini.
SELECT *
FROM employees
WHERE hire_date like '199%'
AND birth_date like '%-12-25'
ORDER BY birth_date ASC, hire_date DESC;
SELECT * FROM employees
WHERE hire_date LIKE '199%';
SELECT YEAR(hire_date) FROM employees;
SELECT *
FROM employees
WHERE YEAR(hire_date) BETWEEN 1990 AND 1999;
SELECT *
FROM employees
WHERE birth_date LIKE '%12-25';
SELECT *
FROM employees
WHERE MONTH(birth_date) = 12 AND DAY(birth_date) = 25;
SELECT *
FROM employees
WHERE last_name LIKE '%q%';
SELECT * FROM employees
WHERE (first_name = 'Irena'
OR first_name = 'Vidya'
OR first_name = 'Maya')
AND gender = 'M';
SELECT * FROM employees
WHERE last_name LIKE 'e%' OR last_name LIKE '%e';
SELECT * FROM employees
WHERE last_name LIKE 'e%' AND last_name LIKE '%e';
SELECT *
FROM employees
WHERE YEAR(hire_date) BETWEEN 1990 AND 1999
AND MONTH(birth_date) = 12 AND DAY(birth_date) = 25;
SELECT *
FROM employees
WHERE last_name LIKE '%q%'
AND last_name NOT LIKE '%qu%';