如何使用mysql语句替换某一个值的内容的最后一个指定的字符
回答前请先看这个帖子http://bbs.csdn.net/topics/390705363?page=1#post-396787221
如何使用mysql语句替换某一个值的内容的最后一个指定的字符“/”
比如
http://www.fuzhuang5.com/
http://www.haolvlv.com/shandonglvyou/index.htm
像上面这二个,最上面的那个是要替换的,而下面的这个是无需替换的,因为他最后面没有/字符
这个字段的值包括了很多的/ 我的需求是替换掉最后一个
这个字符串怎么把最后的一个“/”替换成空
这个update语句要怎么写
------解决方案--------------------
一下任何一句都可以
其实你原先的帖子已经有答案了
update tbl_name set field_name=if(field_name REGEXP '/$', substr(field_name,1,length(field_name)-1),field_name)<br />update tbl_name set field_name=if(field_name RLIKE '/', substr(field_name,1,length(field_name)-1),field_name)<br />update tbl_name set field_name=substr(field_name,1,length(field_name)-1) where field_name REGEXP '/$'<br />update tbl_name set field_name=substr(field_name,1,length(field_name)-1) where field_name RLIKE '/''<br />update tbl_name set field_name=left(field_name,length(field_name)-1) where field_name REGEXP '/$'<br />update tbl_name set field_name=left(field_name,length(field_name)-1) where field_name RLIKE '/''<br />

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