Make sure there is data to process in your underlying database.
确保在基础数据库中有要处理的数据。
Check your underlying database to make sure your fact tables contain data.
检查基础数据库，确保事实表中含有数据。
The underlying database engine USES your new view definition when you save your view.
当您保存视图时，基础数据库引擎将使用新的视图定义。
The underlying database engine USES your new view definition when you save your view.
当您保存视图时，基础数据库引擎将使用新的视图定义。
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