How do I... Identify and delete duplicates from SQL Server tables? - TechRepublic
http://www.techrepublic.com/blog/the-enterprise-cloud/how-do-i-identify-and-delete-duplicates-from-sql-server-tables/
While this approach is simple, you'll want to consider a few things: This statement isn't dynamic, which means you'll have to update the references each time you use it. Most of us would define any record where the data in one record matches another column per column (including or excluding the primary key) as a duplicate
http://www.ehow.com/how_5079126_delete-duplicate-sql.html
Type into the console: select count() from TheTable and select distinct from TheTable The 1st command tells you how many total records you have in the table, and the 2nd command tells you how many duplicates you have. The total count of the original table should be the difference between the number counted before the delete query and the number deleted from the table
http://blog.sqlauthority.com/2007/03/01/sql-server-delete-duplicate-records-rows/
select * from mytable union select * from mytable, thsi query returns the exact records, and i guess we can use this data to build a new table or replacing the previous one. I need to get rid of the duplications, meaning that when names are shown more than once for a given month and year, I only want one of the duplicated intervention records to show up
http://blog.sqlauthority.com/2009/06/23/sql-server-2005-2008-delete-duplicate-rows/
We extensively use GROUP BY and we all know problem with GROUP BY (We should have all selected column from select clause in group by clause, other wise we cannot use group by). The problem is: the system by mistake inserted duplicate data in R2-R5 (R1 is PK assuem autonumber) and in one of these duplicates R6 and R7 are also filled
Remove Duplicate Rows from a Table in SQL Server - CodeProject
http://www.codeproject.com/Articles/157977/Remove-Duplicate-Rows-from-a-Table-in-SQL-Server
Easiest way to delete more than one duplicate row from a table in SQL Server Introduction Most of the times, we use primary key or unique key for preventing insertion of duplicate rows in SQL Server. Is it too complicated? History 16th February, 2011: Initial post License This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL) Share email twitter facebook linkedin reddit google+ About the Author Sadeque Sharif Software Developer Meridian Group Bangladesh I am: Manager (IT) at Meridian Group
sql - How can I remove duplicate rows? - Stack Overflow
http://stackoverflow.com/questions/18932/how-can-i-remove-duplicate-rows
Automatically SQL SERVER ignore (there is also an option about what to do if there will be a duplicate value: ignore, interrupt or sth) duplicate values. Factors which might favour the hash aggregate approach would be No useful index on the partitioning columns relatively fewer groups with relatively more duplicates in each group In extreme versions of this second case (if there are very few groups with many duplicates in each) one could also consider simply inserting the rows to keep into a new table then TRUNCATE-ing the original and copying them back to minimise logging compared to deleting a very high proportion of the rows
How to remove duplicate rows in SQL Server 2005 when no key is present - CodeProject
http://www.codeproject.com/Tips/159984/How-to-remove-duplicate-rows-in-SQL-Server-wh
At my spare time (what ever that actually means) I'm also teaching and consulting on different areas of database management, development and database oriented software design
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