For instructions on how to query a database, see http://www.w3schools.com/sql/sql_intro.asp. Also, try running through this tutorial: https://developer.android.com/courses/pathways/android-basics-compose-unit-6-pathway-1

Available tables for you to query:

Australia
Canada
GreatBritain
International
Ireland
NewZealand
SHHS
SouthAfrica

To find out what columns are available to query on, query "show columns from table_name".

Query:
FROM