SELECT DISTINCT without WHERE Clause
In this example, we are going to implement SELECT DISTINCT statement for multiple values but without using WHERE clause. We will explore each and every data of the table.
Query:
SELECT DISTINCT score, course
from w3wiki ;
Output:
Explanation: In the above image, we can clearly notice that all the data displayed are unique. After referring to the main table ‘w3wiki’ , we can clearly see that two repeating values i.e. (150,Python), (100,Java) are eliminated in our result table.
How to SELECT DISTINCT on Multiple Columns in SQL?
In the world of databases, data duplication can lead to confusion and inefficiency. SQL provides a powerful tool, SELECT DISTINCT, to retrieve unique values from columns. However, when dealing with multiple columns, the approach becomes more detailed.
In this article, We will explore How to SELECT DISTINCT on multiple columns in SQL by understanding various methods along with the practical implementation and so on.