Help Center > > FAQs> Secondary Development> FAQs About Application Development> Calling APIs> Historical Data Is Not Returned When the Querying Historical Device Data API Is Called

Historical Data Is Not Returned When the Querying Historical Device Data API Is Called

Updated at: Jun 26, 2019 GMT+08:00
The pageNo parameter in the Querying Historical Device Data 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 this issue occurs, set pageNo to 0 to query the content on the first page.

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