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 ...

Write an SQL query to delete all the duplicate emails, keeping only one unique email with the smallest id. Note that you are supposed to write a DELETE statement and not a SELECT one. After running ...

This blog will help user learn how to avoid the duplicate entries in the database. Storing duplicate values in the table must be avoided while inserting data in the database table. As these duplicate ...

Hello, I've got a bit of an unusual request, I want to create some duplicate rows in a SQL Server table. We have a WorkOrders table that has our customer orders in it. Every order has a WOID ...