CODEWITHSUNDEEP
javagoogle-app-enginegoogle-cloud-datastorejdo
amit surana
amit surana

Reputation: 49

Select particular rows in GQLQueries (JDO) Google app Engine JAVA

I want to select two columns from the table so is it possible to do that or i have to retrieve whole table.

Upvotes: 1

Views: 320

Answers (1)

Rahul
Rahul

Reputation: 21134

The App Engine data store is not a relational database.

The fundamental unit of data storage are called an entity. You always fetch the whole entity, and not a subset of the entity.

For more information look at the App Engine Datastore API documentation as well as the Low Level API documentation.

http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/datastore/package-summary.html

Upvotes: 4

Related Questions