AWS redshift->hdb pg(Greenplum), 内置函数、数据类型、字符集

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背景

redshift与hdb pg 的常用函数、数据类型、字符集对应关系。

redshift

内置函数

https://docs.aws.amazon.com/redshift/latest/dg/c_SQL_functions.html

数据类型

https://docs.aws.amazon.com/redshift/latest/dg/c_Supported_data_types.html

阿里云hdb pg

oracle兼容函数

https://gpdb.docs.pivotal.io/43300/utility_guide/orafce_ref.html

内置函数

https://gpdb.docs.pivotal.io/43300/ref_guide/function-summary.html

数据类型

https://gpdb.docs.pivotal.io/43300/ref_guide/data_types.html

字符集

https://gpdb.docs.pivotal.io/43300/ref_guide/character_sets.html

HLL估值类型

https://help.aliyun.com/document_detail/56747.html

roaring bitmap类型

https://github.com/digoal/blog/blob/master/201801/20180127_01.md

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