Table:
0
A
B
C
D
E
F
G
H
1
student id
date of registration
date of latest logon
login name
password
personal name
middle name
family name
2
1
7/22/2015 13:32
10/17/2017 22:52
annamae.hoppe
db8765bb6f
Wilson
Aubrey
Ward
3
2
7/2/2015 0:21
6/24/2017 22:16
wmiller
35faf8182a
Karson
Luella
Jaskolski
4
3
10/11/2015 3:23
3/10/2018 23:22
ahartmann
8e064ec4e6
Mariela
Brandt
Legros
5
4
1/5/2016 17:21
2/24/2018 23:15
ylockman
a18d639a12
Krystel
Casimir
Langosh
6
5
4/27/2015 10:25
9/5/2017 23:04
mohamed50
aedd08a3b9
Autumn
Lawson
Schumm
7
6
5/12/2015 3:59
9/9/2017 13:19
bmarquardt
3e72450865
Bernie
Asa
Zieme
8
7
9/5/2015 10:49
7/17/2017 23:13
darrin56
35cd4a47a3
Jewel
Marianne
Hodkiewicz
9
8
12/6/2015 7:43
8/24/2017 19:42
eichmann.lera
623af75b4a
Marshall
Linnea
Johns
10
9
8/13/2015 3:31
11/25/2017 3:14
sdaugherty
7c90dbbfde
Prince
Kailey
Ziemann
11
10
4/12/2015 11:07
12/11/2017 14:29
myron.bergnaum
5bc0d35e75
Alicia
Vicente
Carroll
12
11
10/15/2015 9:36
5/29/2017 19:06
gia.jacobson
2e05a1e6a3
Clotilde
Kolby
Windler
13
12
3/25/2016 18:58
1/7/2018 0:15
kiarra28
aa33f3b875
Claudia
Karley
Mitchell
14
13
3/29/2015 14:43
1/10/2018 11:27
francisca48
1c760b9d5d
Else
Camilla
Hartmann
15
14
8/11/2015 1:04
9/15/2017 8:10
ruthie.rolfson
9031f3a72e
Cary
Ursula
O'Reilly
16
15
1/12/2016 15:33
2/22/2018 18:38
jgulgowski
0f37421f02
Eliza
Shanel
Leannon

Questions and formulas:
Question: What are the login names of the students with family name "Ward"?
Formula: FILTER(D1,H1="Ward")
Formula2: FILTER(D2:D16,H2:H16="Ward")
Level: easy
Question: Return the login names of the students whose family name is "Ward".
Formula: FILTER(D1,H1="Ward")
Formula2: FILTER(D2:D16,H2:H16="Ward")
Level: easy
Question: Find the latest logon date of the students whose family name is "Jaskolski" or "Langosh".
Formula: FILTER(C1,(H1="Jaskolski")+(H1="Langosh"))
Formula2: FILTER(C2:C16,(H2:H16="Jaskolski")+(H2:H16="Langosh"))
Level: easy
Question: List the personal names and family names of all the students in alphabetical order of family name.
Formula: SORTBY(CHOOSE({1,2},F1,H1),H1,1)
Formula2: SORTBY(CHOOSE({1,2},F2:F16,H2:H16),H2:H16,1)
Level: easy
Question: What are the personal names and family names of the students? Sort the result in alphabetical order of the family name.
Formula: SORTBY(CHOOSE({1,2},F1,H1),H1,1)
Formula2: SORTBY(CHOOSE({1,2},F2:F16,H2:H16),H2:H16,1)
Level: easy
Question: login names of students with the family name 'Ward'.
Formula: LET(query1,FILTER(A1:H1,H1="ward"),UNIQUE(CHOOSECOLS(query1,4,1)))
Formula2: LET(query1,FILTER(A2:H16,H2:H16="ward"),UNIQUE(CHOOSECOLS(query1,4,1)))
Level: hard
Question: What is the login of the student with surname ward
Formula: LET(query1,FILTER(A1:H1,H1="ward"),UNIQUE(CHOOSECOLS(query1,4,1)))
Formula2: LET(query1,FILTER(A2:H16,H2:H16="ward"),UNIQUE(CHOOSECOLS(query1,4,1)))
Level: hard
Question: The latest logon dates of all students whose family name is Jaskolski or Langosh.
Formula: LET(a,HSTACK(C1,A1),b,A1,c,CHOOSECOLS(UNIQUE(CHOOSECOLS(FILTER(A1:H1,(H1="jaskolski")+(H1="langosh")),1)),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(C2:C16,A2:A16),b,A2:A16,c,CHOOSECOLS(UNIQUE(CHOOSECOLS(FILTER(A2:H16,(H2:H16="jaskolski")+(H2:H16="langosh")),1)),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: What are the personal and family names of each student (ascending in alphabetical order by family name)?
Formula: SORT(UNIQUE(HSTACK(F1,H1,A1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(F2:F16,H2:H16,A2:A16)), 2, 1)
Level: medium
Question: ID and personal name of each student, ascending in alphabetical order by family name.
Formula: SORT(UNIQUE(HSTACK(F1,H1,A1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(F2:F16,H2:H16,A2:A16)), 2, 1)
Level: medium
Question: the login names of students whose family name is ward
Formula: LET(a,HSTACK(D1,A1),b,A1,c,CHOOSECOLS(UNIQUE(CHOOSECOLS(FILTER(A1:H1,H1="ward"),1)),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(D2:D16,A2:A16),b,A2:A16,c,CHOOSECOLS(UNIQUE(CHOOSECOLS(FILTER(A2:H16,H2:H16="ward"),1)),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: What is the login name of the student whose family name is Ward?
Formula: LET(a,HSTACK(D1,A1),b,A1,c,CHOOSECOLS(UNIQUE(CHOOSECOLS(FILTER(A1:H1,H1="ward"),1)),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(D2:D16,A2:A16),b,A2:A16,c,CHOOSECOLS(UNIQUE(CHOOSECOLS(FILTER(A2:H16,H2:H16="ward"),1)),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: What are personal names and family names of all the students in alphabetical order of family names?
Formula: SORT(UNIQUE(HSTACK(F1,H1,A1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(F2:F16,H2:H16,A2:A16)), 2, 1)
Level: medium
Question: the ids, personal names of students in alphabetical order of family names
Formula: SORT(UNIQUE(HSTACK(F1,H1,A1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(F2:F16,H2:H16,A2:A16)), 2, 1)
Level: medium