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I am using memory database(derby) with spring framework.

I am using that with bunch of annotations and xml. It works nice, but I am not sure my SQL is good enough or needs some optimizations.

Is there anyway to check the cost of SQL with derby? (I already visited derby homepage, but I need more examples) Thanks.

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此处记录了测量 SQL 性能的基本技术：http: //db.apache.org/derby/docs/10.10/tuning/index.html

于 2013-11-18T14:52:35.733 回答