SELECT DISTINCT
The SELECT DISTINCT statement is used to retrieve unique values from a single column or a combination of columns in a table. It is often used when you want to eliminate duplicate rows from the result set.
Syntax:
SELECT DISTINCT column1, column2
FROM table_name
Parameters Used:
- column1, column2: Names of the fields of the table.
- table_name: Table from where we want to fetch the records.
SELECT DISTINCT vs GROUP BY in MySQL
In MySQL, the two most common ways of managing and retrieving unique values are with SELECT and GROUP BY. However, they are used for different reasons. With SELECT, we can get different values from the same column, so we don’t have to worry about duplicates. With GROUP BY, we can aggregate data and group results based on specific columns. However, there are some differences between the two operators. Both can be used to generate the same output. But we need to know the difference for better utilization of resources and time.
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