MaxCompute2.0 SQL是一个重大更新，新版本相较于旧版本有很大的更新，我们有全新的解析器，全新的基于代价的优化器，全新的运行时库。新版本性能的增长有长足的进步，查询优化减少了大部分人工干预自动统计信息收集也是一个方面。
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
阅读全文：http://click.aliyun.com/m/13962/
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
阅读全文：http://click.aliyun.com/m/13962/
