Problem You want to remove duplicates in SQL. You know it is
Use Data Modification statements to change data in your database tables.
The database modification statements you’ll use the most are:
You can also combine these into one operation called MERGE!
I would recommend stating out by reading the article Learn how to Add, Remove, or Modify values in a SQL Table.
Then once you have gotten the basics, dig into more detailed articles on INSERT, UPDATE, and DELETE.
Don’t forget about MERGE! I would highly recommend reading Introduction to the Merge Statement once you have master the rest.
All the examples for this lesson are based on Microsoft SQL Server Management Studio and the sample databases AdventureWorks and WideWorldImporters. You can get started using these free tools using my guide Getting Started Using SQL Server
Problem Statement Getting data loaded into your SQL Server tables can come in a variety of methods. There are many mechanisms that
In SQL Server there are a couple a ways you can delete rows from a table. You can use the TRUNCATE and DELETE
Use the DELETE statement to remove rows from a SQL Server data table. In this article we’ll explore how to use the DELETE
Table of contentsWhat are the ACID Database Properties?What’s an Example of ACID Properties? What are the ACID Database Properties? The ACID properties
When modifying one table based on the contents of another it may be tempting to simply use the merge statement, but before
Introduction to the MERGE Statement and SQL Server Data Modification The MERGE statement is used to make changes in one table based
In this article, we’ll discover data manipulation statements used to modify data in the SQL server using the INSERT, UPDATE, DELETE, and
Use the SQL UPDATE statement to change data within a SQL Server data table’s columns. In this article, let’s explore using the
Use the INSERT statement is to add rows to a SQL Server data table. In this article we explore how to use