用转义符替换字符串

Question

我有一个MySQL字段，其中包含如下字符串，我需要替换其中的一部分而不影响其他部分。

当前字符串

  

“http://mydomain.com/app/web/index.php/reqyest/RequestForm/id/661,#SDATERANGE#from#DATE#2015-03-23#DATERANGE#to#DATE#2015-03 -26＃DATERANGE ## DATECLAIMID＃1100＃DATECLAIMID ## SDATERANGE＃，＃TIMERANGE＃FROMTIME-11：00＃TIME＃TOTIME-23：00＃TIME ## TIMECLAIMID＃1100＃TIMECLAIMID ## TIMERANGE＃，84.0 / 0.00 / 732.9 /海外//，@ 1100％22％@＃17＃出租车费用和豪华轿车：123.49：jkta trip-ppit agm taxi.pdf：1100;“

扩展字符串

  

“http://mydomain.com/reqyest/RequestForm/id/661,#SDATERANGE#from#DATE#2015-03-23#DATERANGE#to#DATE#2015-03-26#DATERANGE##DATECLAIMID# 1100＃DATECLAIMID ## SDATERANGE＃，＃＃TIMERANGE放在fromtime，11：00＃TIME＃TOTIME-23：00＃时间## TIMECLAIMID＃1100＃TIMECLAIMID ## TIMERANGE＃，84.0 / 0.00 / 732.9 /海外// @ 1100 ％22％@＃17＃出租车费用和豪华轿车：123.49：jkta trip-ppit agm taxi.pdf：1100;“

以下是我正在使用的查询。

update table_name set table_name.field = replace (field,"/app\/web\/index.php\/","/");

我尝试了下面提供的建议而没有成功。

mysql: replace \ (backslash) in strings

Answer 1

你需要逃避＆＃39; /＆＃39;用＆＃39; \＆＃39;让mysql知道它是该字段的一个字符，而不是一个特殊的字符。 试试这个：

update table_name set table_name.field = replace(field,"\/app\/web\/index.php\/","\/")

Answer 2

我得到了以下结果，这正如您所期望的那样。 “/”不是转义字符，因此不需要特殊处理。

mysql> SELECT REPLACE ( "http://example.com/app/web/index.php/reqyest/RequestForm/id/661,#SDATERANGE#from#DATE#2015-03-23#DATERANGE#to#DATE#2015-03-26#DATERANGE##DATECLAIMID#1100#DATECLAIMID##SDATERANGE#,#TIMERANGE#fromtime-11:00#TIME#totime-23:00#TIME##TIMECLAIMID#1100#TIMECLAIMID##TIMERANGE#,84.0/0.00/732.9/Overseas//,@1100%22%@#17#Taxi fare & Limousine:123.49:jkta trip-ppit agm taxi.pdf:1100;",
    -> "/app/web/index.php/","/");
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| REPLACE ( "http://example.com/app/web/index.php/reqyest/RequestForm/id/661,#SDATERANGE#from#DATE#2015-03-23#DATERANGE#to#DATE#2015-03-26#DATERANGE##DATECLAIMID#1100#DATECLAIMID##SDATERANGE#,#TIMERANGE#fromtime-11:00#TIME#totime-23:00#TIME##TIMECLAIMID#110                                                                                                     |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| http://example.com/reqyest/RequestForm/id/661,#SDATERANGE#from#DATE#2015-03-23#DATERANGE#to#DATE#2015-03-26#DATERANGE##DATECLAIMID#1100#DATECLAIMID##SDATERANGE#,#TIMERANGE#fromtime-11:00#TIME#totime-23:00#TIME##TIMECLAIMID#1100#TIMECLAIMID##TIMERANGE#,84.0/0.00/732.9/Overseas//,@1100%22%@#17#Taxi fare & Limousine:123.49:jkta trip-ppit agm taxi.pdf:1100; |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)