Table:
0
A
B
C
D
1
shipping agent code
shipping agent name
shipping agent description
reference shipping agents
2
UP
UPS
g
3
US
USPS
q
4
AL
Airline
w
5
FE
Fedex
k
6
SH
Ship
t

Questions and formulas:
Question: What are the shipping agent names?
Formula: UNIQUE(B1)
Formula2: UNIQUE(B2:B6)
Level: easy
Question: What is the shipping agent code of shipping agent UPS?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:D1,B1="ups"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:D6,B2:B6="ups"),1))
Level: medium