duanjue6575 2016-04-13 19:00
浏览 37
已采纳

使用regexp从mysql中选择行

I'm trying to select specific rows from my database by using regexp, but it's not working for some reason. What am I doing wrong, and how do I fix it?

select response from allData where response regexp '\*([a-zA-Z]+ )+\*'

It's suppose to select rows like:

*kicks you *

^---With an extra space after the word, and before the asterisk. But it's not working. How do I fix it?

  • 写回答

1条回答 默认 最新

  • dtpa98038 2016-04-13 19:07
    关注

    You're not escaping the * correctly. Backslash is both the string and regular expression escape character. In order for the regular expression engine to see the backslash that escapes the *, you have to escape the backslash to get it through the string parser.

    select response from allData where response regexp '\\*([a-zA-Z]+ )+\\*'
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥15 使用微信开发者工具实现一个“婚博会”小程序
  • ¥15 ros的rviz仿真机器人
  • ¥15 关于#linux#的问题(输入输出错误):出现这个界面接着我重新装系统,又让修电脑的师傅帮我扫描硬盘(没有问题)用着用着又卡死(相关搜索:固态硬盘)
  • ¥15 cv::resize不同线程时间不同
  • ¥15 web课程,怎么做啊😭没好好听课 根本不知道怎么下手
  • ¥15 做一个关于单片机的比较难的代码,然后搞一个PPT进行解释
  • ¥15 python提取.csv文件中的链接会经常出现爬取失败
  • ¥15 数据结构中的数组地址问题
  • ¥15 maya的mel里,怎样先选择模型A,然后利用mel脚本自动选择有相同名字的模型B呢。
  • ¥15 Python题,根本不会啊