How to create indexes on multiple columns

Question

We have the following entity relationships where a User belongs to a particular Organization. My queries either look like \"select * from User where org=:org\" or \"select *

Answer 1

Yes, it is possible using JPA 2.1 as seen in the specification here:

http://download.oracle.com/otndocs/jcp/persistence-2_1-pfd-spec/index.html

on page 445 it states that

The Index annotation is used in schema generation

columnList (Required) The names of the columns to be included in the index.

An example of usage can be seen here:

http://java-persistence-performance.blogspot.co.uk/2013/03/but-what-if-im-not-querying-by-id.html

It seems that the syntax is the same or very similar to Hibernate.