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Regex 正则表达式，匹配包含换行符的字符串，换行符在R中为lookaroud str_replace_Regex_R_Lookaround - Fatal编程技术网
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  • Regex 正则表达式，匹配包含换行符的字符串，换行符在R中为lookaroud str_replace

Regex 正则表达式，匹配包含换行符的字符串，换行符在R中为lookaroud str_replace

regex r

Regex 正则表达式，匹配包含换行符的字符串，换行符在R中为lookaroud str_replace,regex,r,lookaround,Regex,R,Lookaround,我在R中的stringr包中使用str_replace函数。我想替换分区对象和存储对象之间的子字符串 这些命令有效 my_string="esrhjg erguhg rziughrtPARTITIONED BY hzueirghf zreeuifh iuehg reuhg riutghSTORED ASiugh oer hfz" p="(?<=PARTITIONED BY).*(?=STORED AS)" str_replace(my_string,p,"TO REPLACE") my_

我在R中的stringr包中使用str_replace函数。我想替换分区对象和存储对象之间的子字符串

这些命令有效

my_string="esrhjg erguhg rziughrtPARTITIONED BY hzueirghf zreeuifh iuehg reuhg riutghSTORED ASiugh oer hfz"
p="(?<=PARTITIONED BY).*(?=STORED AS)"
str_replace(my_string,p,"TO REPLACE")

my_string=“esrhjg erguhg RZIUGHT由HZUEIGHF ZREEEUIFH iuehg reuhg REUTGH存储在hfz上”

p=“（？在ICU正则表达式中，用于所有
stringr
函数，点匹配除换行符以外的任何字符

您可以使用内联的
（？s）
修饰符-
“（？s）（？）？

my_string="esrhjg erguhg rziughrtPARTITIONED BY hz\nueirghf zreeuifh iuehg reuhg riutghSTORED ASiugh oer hfz"
p="(?<=PARTITIONED BY).*(?=STORED AS)"
str_replace(my_string,p,"TO REPLACE")



my_string="esrhjg erguhg rziughrtPARTITIONED BY hz\nueirghf zreeuifh iuehg reuhg riutghSTORED ASiugh oer hfz"
p="(?s)(?<=PARTITIONED BY).*(?=STORED AS)"
str_replace(my_string,p,"TO REPLACE")



my_string = "esrhjg erguhg rziughrtPARTITIONED BY hzueirghf zreeuifh iuehg reuhg riutghSTORED ASiugh oer hfz"
sub("PARTITIONED BY.*STORED AS", "PARTITIONED BY -TO_REPLACE- STORED AS", my_string)
## or with backreferences:
sub("(PARTITIONED BY).*(STORED AS)", "\\1 -TO_REPLACE- \\2", my_string)