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如何在 EMC XDB 中创建逻辑视图？如果有任何其他解决方案而不是创建视图，请通知我。我想消除在 xquery 语句中使用连接，因为它会影响性能

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xDB does not support views. Having said that, however, most performance problems with joins can, in our experience, typically be addressed by a combination of one or more of:

  • optimizing/rewriting the queries (narrowing down the result set early; basing the joins on the most selective attributes; etc.)
  • using appropriate indexes
  • "denormalizing" the XML structure to eliminate (some) joins.
于 2017-10-17T12:22:16.433 回答