Mysql Distinct, In a table, a column may contain several duplicate values - and sometimes you want to list only the unique values. Learn how to use the MySQL DISTINCT keyword to filter out duplicate entries and retrieve unique values in your database queries efficiently. The MySQL SELECT DISTINCT Statement The SELECT DISTINCT statement is used to return only distinct (unique) values. Explore examples and best practices. Order of Columns: Uniqueness depends on the order of columns in the SELECT statement. The following SQL selects all the distinct (unique) country values from the "Customers" table: Mar 23, 2026 · Things to Remember When Using DISTINCT The following points highlight important aspects to consider when using the DISTINCT clause in MySQL. Mar 23, 2026 · Things to Remember When Using DISTINCT The following points highlight important aspects to consider when using the DISTINCT clause in MySQL. Learn how MySQL handles DISTINCT clauses with ORDER BY, GROUP BY, and LIMIT in different cases. W3Schools has created an SQL database in your browser. The SQL SELECT DISTINCT Statement The SELECT DISTINCT statement is used to return only distinct (unique) values. Performance Impact: DISTINCT can slow down queries on large datasets as MySQL must compare rows to remove duplicates. Feel free to experiment with any SQL statement. By default it returns all the generated rows, including the duplicates. Feb 23, 2023 · Learn about the SELECT DISTINCT SQL command to return a unique list of values from SELECT queries along with several examples. . This tutorial shows you how to use the SQL Server SELECT DISTINCT clause to retrieve the only distinct values in a specified list of columns. Run SQL » Result: Click "Run SQL" to execute the SQL statement above. See examples, equivalences, and optimization possibilities for DISTINCT queries. May 25, 2011 · SELECT DISTINCT FIELD1, FIELD2, FIELD3 FROM TABLE1 works if the values of all three columns are unique in the table. Feb 16, 2026 · SQL COUNT() with DISTINCT: SQL COUNT() function with DISTINCT clause eliminates the repetitive appearance of a same data. In this tutorial, you will learn how to use the MySQL DISTINCT clause in the SELECT statement to eliminate duplicate rows in a result set. Jun 19, 2016 · DISTINCT (or DISTINCTROW) is not a function; it is an option of the SELECT statement that tells MySQL to strip duplicate rows from the resultset generated by the query. The DISTINCT can comes only once in a given select statement. The menu to the right displays the database, and will reflect any changes. If, for example, you have multiple identical values for first name, but the last name and other information in the selected columns is different, the record will be included in the result set. gvxlo, yz3, 0pc, u6t1k, 5koq6jv, 9s, zbmc, 8p9ix, q7yacm, htea,