Duplicate a row in MySQL
Sometimes we need to insert data in our database that is mostly similar to another row. In MySQL, there is a simple trick by which you can easily create duplicate rows.
In this article, we will learn how to create a copy of a row in the same table in MySQL, and we will look at relevant examples and explain it one by one to make the topic easier to understand.
Creating Duplicate Rows in MySQL
The basic idea is to split the query into two parts, the first part will retrieve the specific data that needs to be copied, and the second part will copy that data and insert it into a new row in the same table.
In the following example, we will illustrate how to create duplicate rows in MySQL. For example, suppose we have the following table structure.
Table: projects
| Project_ID | Project_name | Members |
|---|
In order to copy a row and insert it into the same table, you can follow the following query.
Query：
INSERT INTO projects (Project_ID,Project_name, Members) SELECT 1, Project_name, Members FROM projects WHERE Project_ID = 1
Now let's explain the query we shared above. The INSERT INTO projects part will insert the data into the projects table with available fields being (Project_ID, Project_name, Members).
In the next section, we will SELECT 1, Project_name, Members FROM projectsretrieve data from the same fields and tables by . To specify which data to retrieve, we specify a condition in the query: WHERE Project_ID = 1.
When you execute the above query example, you will get the following output.
请注意,The queries we use in this article are written in MySQL.
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