<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>Datum on Tony Bai</title><link>https://tonybai.com/tags/datum/</link><description>Recent content in Datum on Tony Bai</description><generator>Hugo</generator><language>zh-cn</language><copyright>2004-2026 Tony Bai. 版权所有.</copyright><lastBuildDate>Mon, 31 Jul 2023 00:00:00 +0800</lastBuildDate><atom:link href="https://tonybai.com/tags/datum/index.xml" rel="self" type="application/rss+xml"/><item><title>Go语言开发者的Apache Arrow使用指南：读写Parquet文件</title><link>https://tonybai.com/2023/07/31/a-guide-of-using-apache-arrow-for-gopher-part6/</link><pubDate>Mon, 31 Jul 2023 00:00:00 +0800</pubDate><guid>https://tonybai.com/2023/07/31/a-guide-of-using-apache-arrow-for-gopher-part6/</guid><description>本文永久链接 – https://tonybai.com/2023/07/31/a-guide-of-using-apache-arrow-for-gopher-part6 Apache Arrow是一种开放的、与语言无关的列式内存格式，在本系列文章的前几篇中，我们都聚焦于内存表示与内存操作。 但对于一个数据库系统或大数据分析平台来说，数据不能也无法一直放在内存中，虽说目前内存很大也足够便宜了，但...</description></item><item><title>Go语言开发者的Apache Arrow使用指南：扩展compute包</title><link>https://tonybai.com/2023/07/22/a-guide-of-using-apache-arrow-for-gopher-part5/</link><pubDate>Sat, 22 Jul 2023 00:00:00 +0800</pubDate><guid>https://tonybai.com/2023/07/22/a-guide-of-using-apache-arrow-for-gopher-part5/</guid><description>本文永久链接 – https://tonybai.com/2023/07/22/a-guide-of-using-apache-arrow-for-gopher-part5 在本系列文章的第4篇《Go语言开发者的Apache Arrow使用指南：数据操作》中我们遇到了**大麻烦**：Go的Arrow实现居然不支持像max、min、sum这样的简单聚合计算函数:(，分组聚合(grouped aggr...</description></item></channel></rss>