-
Notifications
You must be signed in to change notification settings - Fork 19
/
2_SelectAndAlias_Homework.sql
264 lines (126 loc) ยท 4.37 KB
/
2_SelectAndAlias_Homework.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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
๏ปฟ/******************************************************************************
Course videos: https://www.red-gate.com/hub/university/courses/t-sql/tsql-for-beginners
Course scripts: https://litknd.github.io/TSQLBeginners
Introducing SELECTs and Aliasing
This is your HOMEWORK file
For best results, work through this homework and test running the queries (learn by "doing" when you can)
Need some help?
Join the SQL Community Slack group for discussion: https://t.co/w5LWUuDrqG
Click the + next to 'Channels' and join #tsqlbeginners
*****************************************************************************/
/* โ๐ป Doorstop โ๐ป */
RAISERROR(N'Did you mean to run the whole thing?', 20, 1) WITH LOG;
GO
/* ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐
Homework documentation:
๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐*/
USE WideWorldImporters;
GO
--Not sure how to start? Get stuck? These pages will un-stick you!
--WHERE: https://docs.microsoft.com/en-us/sql/t-sql/queries/where-transact-sql
--LIKE: https://docs.microsoft.com/en-us/sql/t-sql/language-elements/like-transact-sql
--ORDER BY: https://docs.microsoft.com/en-us/sql/t-sql/queries/select-order-by-clause-transact-sql
/* ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ
Homework
๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ ๐ฎ */
USE WideWorldImporters;
GO
/*
Q1
Write a query that SELECTS all the rows from Application.People
Return all columns in the table
Use a "worst practice" to SELECT every column in the table
GO
*/
/*
Q2
Write a query that SELECTS all the rows from Application.People
Return rows for ONLY three columns:
FullName
PreferredName
EmailAddress - alias as: Email
GO
*/
/*
Q3
Write a query that SELECTS all the rows from Application.People
Return rows for ONLY three columns:
FullName
PreferredName
EmailAddress - alias as: Email
Return ONLY rows where Email has not been entered (NULL)
GO
*/
/*
Q4
Write a query that SELECTS all the rows from Application.People
Return rows for ONLY three columns:
FullName
PreferredName
EmailAddress - alias as: Email
Return ONLY rows where PreferredName is Agrita
GO
*/
/*
Q5
Write a query that SELECTS all the rows from Application.People
Return rows for ONLY three columns:
FullName
PreferredName
EmailAddress - alias as: Email
Return ONLY rows where PreferredName starts with the letter A
GO
*/
/*
Q6
Write a query that SELECTS all the rows from Application.People
Return rows for ONLY three columns:
FullName
PreferredName
EmailAddress - alias as: Email
Return ONLY rows where PreferredName starts with the LOWERCASE letter 'a'
GO
*/
/*
Q7
Write a query that SELECTS all the rows from Application.People
Return rows for ONLY three columns:
FullName
PreferredName
EmailAddress - alias as: Email
Return ONLY rows where PreferredName contains 'y' or 'Y' anywhere in the string
AND the email address contains a space
Order the results by EmailAddress Ascending
GO
*/
/*
Q8
Write a query that SELECTS all the rows from Application.People
Return rows for ONLY two columns:
FullName
The length (number of characters in) the FullName column,
as calculated by the LEN() SQL Server function
https://docs.microsoft.com/en-us/sql/t-sql/functions/len-transact-sql?view=sql-server-2017
alias as: Len Full Name
Order the results by the length of FullName, Descending
Return only 10 rows
Do NOT use SET ROWCOUNT -- instead do everything in a single TSQL statement
GO
*/
/*
Q9
Write a query that SELECTS all the rows from Application.People
Just like Q8...
Return rows for ONLY two columns:
FullName
The length (number of characters in) the FullName column,
as calculated by the LEN() SQL Server function
https://docs.microsoft.com/en-us/sql/t-sql/functions/len-transact-sql?view=sql-server-2017
alias as: Len Full Name
Order the results by the length of FullName, Descending
Return only 10 rows
EXCEPT this time...
Return rows ONLY #11 - 20 (as ordered by description above)
Do NOT use the TOP keyword, do not use ROW_NUMBER(), and do not use SET ROWCOUNT
GO
*/