![Trending Articles on Technical and Non Technical topics](/images/trending_categories.jpeg)
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How do I get SUM function in MySQL to return '0' if no values are found?
To return Sum as ‘0’ if no values are found, use IFNULL or COALESCE commands.
The following is the syntax for IFNULL.
SELECT IFNULL(SUM(NULL), 0) AS aliasName;
Let us now implement the above syntax in the following query.
mysql> SELECT IFNULL(SUM(NULL), 0) AS SUMOFTWO;
The following is the output of the above query, which returns 0.
+----------+ | SUMOFTWO | +----------+ | 0 | +----------+ 1 row in set (0.00 sec)
Here is the syntax for COALESCE.
mysql> SELECT COALESCE(SUM(NULL),0) as SUMOFTWO;
The following is the output that returns 0 using the SUM() function.
+----------+ | SUMOFTWO | +----------+ | 0 | +----------+ 1 row in set (0.00 sec)
Advertisements