It is designed to improve server selection, load optimization, and fault tolerance.
它专门设计用于改善服务器选择、负载优化和容错。
To improve performance, federation frequently USES caching, materialized query tables (MQTs), and distributed query optimization and execution.
要改进性能,联合需要经常使用缓存、物理查询表(MQT)以及分布式查询优化和执行。
For statistical view, the ENABLE query optimization clause will cause the view, and its associated statistics to be used to improve the query optimization.
对于统计视图,ENABLE QUERY optimization子句将导致该视图以及与之相关联的统计信息被用于改进查询优化。
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