I have a Play app that uses a database, and for debugging purposes I want to show the SQL that JPA uses. How can I do this?
maybe this could also help
http://www.mkyong.com/hibernate/how-to-display-hibernate-sql-parameter-values-log4j/
it allows you so also see the sql binding parameters values...
In application.conf, you can turn showing SQL on uncommenting jpa.debugSQL=true. This will give you the prepared statement queries with question marks in them. Also, Play uses Hibernate, so you can also use Hibernate properties. These can be written in application.conf directly or in a separate hibernate.properties file residing in the conf folder of your Play application.