Lambda Distinct Select
16198
LINQ's Distinct() on a particular property
86298
How do I (or can I) SELECT DISTINCT on multiple columns?
155018
Use of Distinct with list of custom objects
152851
Best practice for a query inside a batch and Mapping
32826
C# LINQ find duplicates in List
46
Oracle: function based index selective uniqueness
138361
What's faster, SELECT DISTINCT or GROUP BY in MySQL?
97862
Select arbitrary element in postgres
6011
How do I build a SOQL query for records in a list of IDs?
46432
What is the "N+1 selects problem" in ORM (Object-Relational Mapping)?
76019
Workaround for exceeding governor limits using COUNT_DISTINCT in Batch Apex Class?
30778
Excel function working like SQL group by + count(distinct *)?
104898
Proper notation for distinct sets
57566
SQL to find the number of distinct values in a column
63099
How to select distinct field values using Solr?
56152
How to take all but the last element in a sequence using LINQ?
45504
Best way to select a subset of items in a long list