Distinct membership
11009
Get joint distribution from pairwise marginal distribution
77632
Can column uniqueness be commutative?
24564
Can a Linux user belong to more than one group?
38992
Is the duplicate answer flags raised for exact copies of answers of different users?
158381
Distinct balls into distinct boxes
96093
How do I get the distinct/unique values in a column in Excel?
148776
A different approach in distributing $8$ distinct balls into $6$ distinct boxes
98201
LINQ Select Distinct with Anonymous Types
155018
Use of Distinct with list of custom objects
16198
LINQ's Distinct() on a particular property
143056
Can I use set instead of List to resolve the duplicate id issue
71514
Generating a unique machine id
71644
How can I remove existing duplicate accounts and records at once?
137172
How to get distinct characters?
148032
Consistency strength of the "club ultrafilter"
14773
Finding distinct solutions for the equation
25897
Custom unique constraint, only enforced if one column has a specific value