MySQL使用RLIKE表达式删除查询

Question

我正在尝试运行查询以根据表达式删除重复项。我试图使用的表达方式就是这个。

category-23023或category-link-2398或category-link-url-58693435

基本上，我需要一个表达式来检查-短划线符号前面的字符串是否包含一个字母后跟一个破折号，最后是一个数字。这是我上次尝试过的不起作用。

delete
from core_url_rewrite using core_url_rewrite,
    core_url_rewrite e1
where core_url_rewrite.url_rewrite_id > e1.url_rewrite_id
    and core_url_rewrite.target_path = e1.target_path 
    and core_url_rewrite.target_path RLIKE '^[a-z]+\\-[0-9]$';

Answer 1

试试这个，应该有用。

delete
from core_url_rewrite using core_url_rewrite,
    core_url_rewrite e1
where core_url_rewrite.url_rewrite_id > e1.url_rewrite_id
    and core_url_rewrite.target_path = e1.target_path 
    and core_url_rewrite.target_path RLIKE '^[a-z]+\\-*.*\\-[0-9]+$';

Answer 2

似乎我能够通过改变Riad的代码来实现这一点。

delete
from core_url_rewrite using core_url_rewrite,
    core_url_rewrite e1
where core_url_rewrite.url_rewrite_id > e1.url_rewrite_id
    and core_url_rewrite.target_path = e1.target_path 
    and core_url_rewrite.target_path RLIKE '[a-z]+\\-[0-9]+$';