Home >Database >Mysql Tutorial >How to Prevent Duplicate Entries in SQL INSERT Statements?
How to Prevent Duplicate Entries in SQL INSERT Statements?
- Barbara StreisandOriginal
- 2025-01-01 11:23:10724browse
How to Prevent Duplicate Entries Using "INSERT WHERE NOT EXISTS"
Problem:
asp.net data entry requires ensuring unique insertions into a table with columns SoftwareName and SoftwareType. If an insert query contains duplicate information, an error should be thrown and data should not be inserted.
Solution 1: Using IF Statement
IF NOT EXISTS
( SELECT 1The above is the detailed content of How to Prevent Duplicate Entries in SQL INSERT Statements?. For more information, please follow other related articles on the PHP Chinese website!
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn