How to Use MySQL DISTINCT to Eliminate Duplicate Rows(LAB3.5)

How to Use MySQL DISTINCT to Eliminate Duplicate Rows(LAB3.5)

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How to Use MySQL DISTINCT to Eliminate Duplicate Rows Summary : in this tutorial, you will learn how to use MySQL DISTINCT operator with the SELECT statement to eliminate duplicate rows in the result set. Use classicmodels database to perform the below tasks. When querying data from a table, you may get duplicate rows. In order to remove the duplicate rows, you use the DISTINCT operator in the SELECT statement . The syntax of using the DISTINCT operator is as follows: 1 2 3 SELECT DISTINCT columns FROM table_name WHERE where_conditions Let’s take a look a simple example of using the DISTINCT operator to select the distinct last names of employees from the employees table. First, we query the last names of employees from the employees table using the SELECT statement as follows: 1 2 3 SELECT lastname FROM employees ORDER BY lastname Some employees has the same last name Bondur , Firrelli , etc. To remove the duplicate last names, you use the DISTINCT operator in the SELECT clause as follows: 1 2 3 SELECT DISTINCT lastname FROM employees ORDER BY lastname
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