from pyspark.sql.functions import regexp_replace from pyspark.sql.types import StringType 定义一个自定义函数,用于删除引号之间的空格: 代码语言:txt 复制 def remove_spaces_between_quotes(value): pattern = r'(?<=")\s+(?=")' return regexp_replace(value, pattern, "") 注册自定义函数: ...
pyspark.sql.functions module provides string functions to work with strings for manipulation and data processing. String functions can be applied to string columns or literals to perform various operations such as concatenation, substring extraction, padding, case conversions, and pattern matching with re...
SQL错误在Pyspark中使用创建表时输入“sql_query”不匹配，应为{EOF}当然，这是行不通的，因为文字字符...
#A tokenizer that converts the input string to lowercase and then splits it by white spaces. tokenizer=Tokenizer(inputCol='sentence',outputCol='words') #按pattern分割[非单词字符]; gaps参数设置为false,表明使用正则表达式匹配标记,而不是将正则作为分隔符。 regexTokenizer=RegexTokenizer(inputCol='sent...
Replaces all multispaces with single spaces (e.g. changes"this has some"to"this has some". actual_df=source_df.withColumn("words_single_spaced",quinn.single_space(col("words")) ) remove_all_whitespace() Removes all whitespace in a string (e.g. changes"this has some"to"thishassome"....