T-SQL XML从节点问题中获取值？

I have an XML like:

我有一个XML：

<?xml version="1.0" encoding="utf-16"?>
<ExportProjectDetailsMessage xmlns:i="https://www.w3.org/2001/XMLSchema-instance" xmlns="https://schemas.datacontract.org/2004/07/Project">
<CPProjectId>7665699f-6772-424c-8b7b-405b9220a8e7</CPProjectId>
</ExportProjectDetailsMessage>
<?xml version=