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        pc

0.0.201

新功能/规格

云原生大数据计算服务 MaxCompute - SEMI JOIN支持MAPJOIN Hint

Oct 30 2020

云原生大数据计算服务 MaxCompute

SEMI JOIN支持MAPJOIN Hint，提高 LEFT SEMI/ANTI JOIN的性能，为数据倾斜问题提供解决方案。

适用客户

开发者，分析师

新增功能/规格

当一个大表和一个或多个小表JOIN时，用户可以在SELECT语句中显式指定MAPJOIN Hint以提升查询性能。目前MAPJOIN Hint进一步支持 LEFT SEMI JOIN和LEFT ANTI JOIN, 可以提高SEMI JOIN的性能，同时也为数据倾斜问题提供解决方案。

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搭载第三代英特尔®至强®可扩展处理器（代号"IceLake")。

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销售支持

1对1售前咨询

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了解更多

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