Star join supports snowflake schema as well.

星型连接也支持雪花模式。

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The optimizer can choose a star join plan only if a query involves tables from a star or snowflake schema that meets the following requirements.

只有查询中包含满足以下要求的星型或雪花模式的表时，优化器才可以选择星型连接计划。

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When you define a dimension based on a snowflake schema, which is where dimension attributes are derived from multiple related tables, an attribute relationship is automatically defined as follows.

当您基于雪花型架构(在该架构中，维度属性派生自多个相关的表)定义维度时，会按如下方式自动定义属性关系。

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