This documentation is for WSO2 Data Services Server 3.2.2. View documentation for the latest release.
Page Comparison - Nested Query Sample (v.4 vs v.5) - Data Services Server 3.2.2 - WSO2 Documentation

Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.


  • employeesInOfficeSQL - Takes in an office code and prints the details of all the employess in that office.
  • listOfficesSQL - Lists all the offices in the database. When office information is printed, all the employees that belong to an office are also printed using a nested query, which refers to the employeesInOfficeSQL query.
  • customerNameSQL - Takes in the customer number as a parameter and returns the customer name. In the result section of this query, there is no "rowName" defined; only an element wrapper. With this option, a separate element will not be created for every record in the result. But the record content will be directly added to the outer element. This is best used in a query where, there is only one record to be returned.
  • customerOrdersSQL - Prints the details of all the orders that are in the database. In the result elements, a nested query which references the customerNameSQL query is used. In this way, the name of the customer who placed the order can also be returned with the order details.

See Data Services and Resources for a definition of data services and operations.

Building the sample

The sample data service NestedQuerySample should be deployed using the instructions in Samples Setup section.