Querying the DDM Result Set
Introduction
This sample shows how to create a query object to query data in a key-value (KV) store and obtain the result set in distributed data management (DDM).
Usage
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Touch Add Data to save the template data to the RDB store.
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Touch Query the Result Set to obtain the result set that contains the specified key.
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Touch Query the Specified Value Entry to obtain the result set that contains the specified key based on the predicate.
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Touch And Condition Query and specify the predicate to obtain the result set in which FieldNode is not a specific value.
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Touch Query Results in Descending Order to obtain the result set in which FieldNode is not a specific value and list the values in descending order.
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Touch Query Smaller Than Value to obtain the KV pairs whose FieldNode is less than the specified value based on the predicate.
Constraints
This sample can only be run on standard-system devices.