Step 6: Query the data in the DynamoDB table

In this step, you will use HiveQL to query the Features table in DynamoDB. Try the following Hive queries:

1. All of the feature types (feature_class) in alphabetical order:

   SELECT DISTINCT feature_class
   FROM ddb_features
   ORDER BY feature_class;

2. All of the lakes that begin with the letter "M":

   SELECT feature_name, state_alpha
   FROM ddb_features
   WHERE feature_class = 'Lake'
   AND feature_name LIKE 'M%'
   ORDER BY feature_name;

3. States with at least three features higher than a mile (5,280 feet):

   SELECT state_alpha, feature_class, COUNT(*)
   FROM ddb_features
   WHERE elev_in_ft > 5280
   GROUP by state_alpha, feature_class
   HAVING COUNT(*) >= 3
   ORDER BY state_alpha, feature_class;

Next step

Step 7: (Optional) clean up