pyspark dataframe添加特定列
作者:高景洋 日期:2020-12-11 11:44:35 浏览次数:1634
from pyspark.sql.functions import lit,rand
df = spark.read.csv('file:///Users/jasongao/Documents/tmp/hbase-0.csv',schema) # 原始DF
df11 = df.withColumn('RandomKey',rand()) # 给df 增加 RandomKey 随机列，并生成新的DF
df11.orderBy(df11['RandomKey']).show() # 按新增列正排序 输出显示
PS : 新增列时，优先使用 # from pyspark.sql.functions # 下的方法，尽量避免通过用户自定义函数实现列内容增加
本文永久性链接：
<a href="http://r4.com.cn/art169.aspx">pyspark dataframe添加特定列</a>
<a href="http://r4.com.cn/art169.aspx">pyspark dataframe添加特定列</a>
当前header:Host: r4.com.cn
X-Host1: r4.com.cn
X-Host2: r4.com.cn
X-Host3: 127.0.0.1:8080
X-Forwarded-For: 3.128.173.5
X-Real-Ip: 3.128.173.5
X-Domain: r4.com.cn
X-Request: GET /art169.aspx HTTP/1.1
X-Request-Uri: /art169.aspx
Connection: close
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Accept-Encoding: gzip, br, zstd, deflate