Help Center> IoT Device Access> FAQs> Application Integration> Why Was Historical Data Not Returned When the API for Querying Historical Device Data Was Called?
Why Was Historical Data Not Returned When the API for Querying Historical Device Data Was Called?
The pageNo parameter in the API indicates the page number to be queried.
- If the value is 0, the first page is queried.
- If the value is null, pagination query is not performed.
- If the value is an integer greater than or equal to 0, pagination query is performed.
When no historical data is returned, set pageNo to 0 to query the content on the first page.
Parent topic: Application Integration
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