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MaxCompute - ODPS重装上阵 第六弹 - User Defined Type
MaxCompute中的UDT(User Defined Type)功能支持在SQL中直接引用第三方语言的类或者对象,获取其数据内容或者调用其方法 。 在其他的SQL引擎中也有UDT的概念,但是和MaxCompute的概念有许多差异。很多SQL引擎中的概念比较像MaxCompute的struct复杂类型。而某些语言提供了 ...
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