Jul 28, 2019 · This selects/deletes all duplicate records except one record from each group of duplicates. So, the delete leaves all unique records + one record from each group of the duplicates.

Jan 22, 2010 · 100 You can run the following query and find the duplicates with max(id) and delete those rows.

This answer identifies duplicates, while returning individual records and their unique ID's. The marked answer groups the results, meaning you cannot actually identify the duplicates by their unique ID's, …

3 If you're using SQL Server 2005 or later (and the tags for your question indicate SQL Server 2008), you can use ranking functions to return the duplicate records after the first one if using joins is less …

Take the subquery, run it first into a temporary table, create an index on it then run the full query doing the subquery where your duplicate field in the temporary table.

10 To delete the duplicate rows from the table in SQL Server, you follow these steps: Find duplicate rows using GROUP BY clause or ROW_NUMBER () function. Use DELETE statement to remove the …

However, what I'd like to do is have my query display the name of the authors associated with the duplicated entry (the "book" table and "author" table are connected by "author_id").

Jul 21, 2011 · what is the sql query to find the duplicate records and display in descending, based on the highest count and the id display the records. for example: getting the count can be done with select ...

Using the sql statement above you get a table which contains all the duplicate years in your table. In order to delete all the duplicates except of the the latest duplicate entry you should use the above sql …

Mar 24, 2012 · I am validating a table which has a transaction level data of an eCommerce site and find the exact errors. I want your help to find duplicate records in a 50 column table on SQL Server. …