Difference Between Group By Vs Distinct Clause
We can see that both plans are the same because on the back DISTINCT and GROUP BY work similarly if they are not bound by any other clause or aggregate.
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GROUP BY Clause |
DISTINCT Clause |
|---|---|
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Used to group rows by one or more columns or expressions and apply aggregate functions |
Used to return only the unique values from a column or a set of columns |
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Can be used without aggregate functions, but not recommended |
Simpler and clearer to use when no aggregation is needed |
|
Preserves the order of the rows |
May change the order of the rows |
Group By Vs Distinct Difference In SQL Server
Distinct is a relational database management system. SQL Server offers a wide range of features and tools that handle different needs, from small-scale applications to large-scale application solutions. GROUP BY has performance features, especially when dealing with large datasets and complex aggregations. DISTINCT is generally more effective and more efficient when the purpose is to obtain unique values.
In this article, we will understand the Group By vs. Distinct Difference In SQL Server with examples and so on.