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Delete all duplicate rows in MySQL

Delete all duplicates rows except one in SQL Server

Recently, I got one request for one script to delete duplicate records in PostgreSQL.
Most of the Database Developers have such a requirement to delete duplicate records from the Database.

Like SQL Server, ROW_NUMBER() PARTITION BY is also available in PostgreSQL.
I have prepared this script, using simple inner query with the use of ROW_NUMBER() PARTITION BY clause.

Create a sample table:

CREATE TABLE tbl_RemoveDuplicate
(	
	ID INTEGER PRIMARY KEY
	,Name VARCHAR(150)
);

Insert few duplicate records:

INSERT INTO tbl_RemoveDuplicate VALUES
(1,'ABC'),(2,'XYZ')
,(3,'XYZ'),(4,'RFQ')
,(5,'PQR'),(6,'EFG')
,(7,'EFG'),(8,'ABC');

Except one, Delete all duplicate records:

DELETE FROM tbl_RemoveDuplicate
WHERE ID IN 
(SELECT ID
FROM (SELECT id,
	     ROW_NUMBER() OVER (partition BY Name ORDER BY ID) AS RowNumber
     FROM tbl_RemoveDuplicate) AS T
WHERE T.RowNumber > 1);

Check the result:

SELECT *FROM tbl_RemoveDuplicate;
 id | name
----+------
  1 | ABC
  2 | XYZ
  4 | RFQ
  5 | PQR
  6 | EFG
(5 rows)