Hibernate Max() Function (Aggregate Functions)
In this section, we will show you, how to use the Max() function. Hibernate supports multiple aggregate functions. When they are used in HQL queries, they return an aggregate value ( such as avg(...), sum(...), min(...), max(...) , count(*), count(...), count(distinct ...), count(all...) ) calculated from property values of all objects satisfying other query criteria.
Following is a aggregate function (max() function) with their respective syntax.
max( [ distinct | all ] object.property)
The Max() function aggregates the maximum value of the given column.
Table Name: insurance
|2||Life Insurance||25000||0000-00-00 00:00:00|
|1||Givan Dhara||20000||2007-07-30 17:29:05|
|3||Life Insurance||500||2005-10-15 00:00:00|
|4||Car Insurance||2500||2005-01-01 00:00:00|
|5||Dental Insurance||500||2004-01-01 00:00:00|
|6||Life Insurance||900||2003-01-01 00:00:00|
|7||Travel Insurance||2000||2005-02-02 00:00:00|
Here is the java code to retrieve the maximum value of "invested_amount" column from insurance table:
|log4j:WARN No appenders
could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.
Hibernate: select max(insurance0_.invested_amount) as col_0_0_ from insurance insurance0_
Max Invested Amount: 25000