如何在SharePoint REST API中结合$top获取匹配项总数？

Hey there! It sounds like you've successfully implemented the POST version of the SharePoint REST getItems endpoint to get around the URL length limitation of the GET API—great call, especially with those complex AND/OR CAML queries. You mentioned that when using $top=200, your AJAX response returns exactly 200 items, and the functionality works as expected. Let me break down why this is happening and share some key notes to keep your implementation solid:

• Why you're getting exactly 200 items：The $top parameter in SharePoint REST (whether used in GET or POST) explicitly limits the number of items returned in a single response. Since you've set it to 200, SharePoint will return the first 200 items that match your CAML query—this is completely intended behavior, and it's good that your results align with expectations!

• Threshold safety check：Your list has 60k items, and the list view threshold is set to 70k. Right now, you're well under the threshold because you're only fetching 200 items at a time. That said, if your list grows past 70k items in the future, make sure the fields used in your CAML's AND/OR filters are indexed. Without indexed fields, even a filtered query with $top can trigger threshold errors if SharePoint has to scan more than 70k items to find your matching results.

• POST request best practices：When using POST with getItems, you can structure your request body in two ways to control the item limit:

  1. Use the $top parameter in the URL (like you're doing now)
  2. Include a <RowLimit> element inside your CAML's <View> tag

  {
    "query": {
      "__metadata": { "type": "SP.CamlQuery" },
      "ViewXml": "<View><Query>你的复杂AND/OR查询逻辑</Query><RowLimit>200</RowLimit></View>"
    }
  }
  

  Note that if you use both, the <RowLimit> will take precedence over the $top parameter—so pick one approach to avoid confusion.

• Pagination for more items：If you ever need to fetch more than the first 200 items, SharePoint provides a way to paginate through results. In your initial response, look for the d.__next property—this is a direct URL you can call with a GET request to get the next 200 items. If you want to stick with POST for subsequent pages, you'll need to include the ListItemCollectionPosition from the response in your next request body, like this:

  {
    "query": {
      "__metadata": { "type": "SP.CamlQuery" },
      "ViewXml": "<View><Query>你的查询</Query><RowLimit>200</RowLimit></View>",
      "ListItemCollectionPosition": { "PagingInfo": "从响应中提取的分页信息字符串" }
    }
  }
  

• Optimizing complex CAML queries：With multiple AND/OR combinations, it's easy to create inefficient queries. Try to simplify nested logic where possible, and ensure all filter fields are indexed—this will keep your query fast even as your list grows.

内容的提问来源于stack exchange，提问作者Shailesh Jaiswal