When designing objects in SQL Server, we must follow certain best practices. For example, a table should have primary keys, identity columns, clustered and unclustered indexes, data integrity and ...

Sometimes we required to remove duplicate records from a table although table has a uniqueid column with identity. ex: create table dbo.employee ( empid int identity (1,1) not null, name varchar (55) ...

In the following article we will go through a solution to a very common requirement of removing delete duplicate rows from sql server table.let us first create a table and add sample data to this ...

Databases often suffer from the problem of having duplicate data. Duplicate data can cause inconsistencies in data analysis, provide inaccurate reports, and bloat databases. To prevent these problems, ...

For all countries that have multiple rows in the country_continent table, delete all multiple records leaving only the 1 record per country in the master table. The record that you keep should be the ...

Create a new empty table except set the fields that you don''t want duplicated as primary key and then dump the entire table from old to new and all the duplicated records will get bumped out as ...