The examples are simple and show that there is no problem when the evolving part of the schema is not evaluated on any query.
这些例子很简单，说明如果查询中不涉及模式的演化部分就没有什么问题。
The examples are simple and show that there is no problem when the evolving part of the schema is not evaluated on any query.
这些例子很简单，说明如果查询中不涉及模式的演化部分就没有什么问题。
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