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
Select the maximum for each value in a MySQL table?
For this, use GROUP BY clause along with MAX(). Let us first create a table −
mysql> create table DemoTable -> ( -> CountryName varchar(20), -> Population int -> ); Query OK, 0 rows affected (0.56 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('US',560);
Query OK, 1 row affected (0.23 sec)
mysql> insert into DemoTable values('UK',10090);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('UK',8794);
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable values('US',1090);
Query OK, 1 row affected (0.21 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------------+------------+ | CountryName | Population | +-------------+------------+ | US | 560 | | UK | 10090 | | UK | 8794 | | US | 1090 | +-------------+------------+ 4 rows in set (0.00 sec)
Following is the query to select the maximum for each value in a MySQL table −
mysql> select CountryName,max(Population) from DemoTable group by CountryName;
This will produce the following output −
+-------------+-----------------+ | CountryName | max(Population) | +-------------+-----------------+ | US | 1090 | | UK | 10090 | +-------------+-----------------+ 2 rows in set (0.00 sec)
Updated on: 18-Dec-2019
139 Views
Advertisements