DISTINCT based on multiple columns
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LINQ's Distinct() on a particular property
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How do I get the distinct/unique values in a column in Excel?
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Find duplicate records in a table using SQL Server
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SQL multiple join statement
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SQL server select distinct rows using most recent value only
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How to count occurrences of a column value efficiently in SQL?
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T-SQL: Selecting Column Based on MAX(Other Column)
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SQL Query to concatenate column values from multiple rows in Oracle
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How get the sum for every distinct value in another column?
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Select distinct for one column and many in another column
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QUERY - pivot multiple columns, variable number of rows
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Selecting a row in excel based on specific values in 2 columns,
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SQL Combine Two Columns in Select Statement
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Group By Multiple Columns
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What's faster, SELECT DISTINCT or GROUP BY in MySQL?
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SQL query construction - separate data in a column into two columns
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ORDER BY items must appear in the select list if SELECT DISTINCT is specified