oracle regexp_like: 将 Perl 正则表达式用于 AND 运算符等价物

Question

在 Oracle REGEX_LIKE 中编写正则表达式时是否有等效的 AND 运算符？我一直在尝试 select 所有三个单词都必须包含在一个字符串中的情况。在下面的示例中，我想匹配 所有三个词、small & leather & 的所有实例goods 必须包含在字符串中。我试过很多在线正则表达式测试器，正则表达式语法完全符合我的需要，但是当我尝试在 REGEXP_LIKE 表达式中使用语法时，我得到零匹配

regexp_like(GLOBAL_CATEGORY,'(?=.*small)(?=.*leather)(?=.*goods)^.*$','i')

正则表达式测试程序示例可实现我正在寻找的内容： regexr.com/4vc1s

Men/Outerwear/Leather/Sale **(NO MATCH)**
Men > Accessories > Bags & Leather Goods > Small Leather Goods **(YES MATCH)**
Men > Accessories > Bags & Leather Goods > Bags **(NO MATCH)**
Men > Accessories > Bags & Leather Goods > Small Leather Goods **(YES MATCH)**
Men/Outerwear/Leather/Sale **(NO MATCH)**
Men/Small_Leather_Goods/Sale **(YES MATCH)**
Men/Outerwear/Leather **(NO MATCH)**
Men/Small_Leather_Goods **(YES MATCH)**
men>accessories>small>leather>goods **(YES MATCH)**

Answer 1

如果您不坚持使用正则表达式，那么简单的 instr 就可以完成工作：

SQL> with test (col) as (
  2  select 'Men/Outerwear/Leather/Sale **(NO MATCH)**'                                      from dual union all
  3  select 'Men > Accessories > Bags & Leather Goods > Small Leather Goods **(YES MATCH)**' from dual union all
  4  select 'Men > Accessories > Bags & Leather Goods > Bags **(NO MATCH)**'                 from dual union all
  5  select 'Men > Accessories > Bags & Leather Goods > Small Leather Goods **(YES MATCH)**' from dual union all
  6  select 'Men/Outerwear/Leather/Sale **(NO MATCH)**'                                      from dual union all
  7  select 'Men/Small_Leather_Goods/Sale **(YES MATCH)**'                                   from dual union all
  8  select 'Men/Outerwear/Leather **(NO MATCH)**'                                           from dual union all
  9  select 'Men/Small_Leather_Goods **(YES MATCH)**'                                        from dual union all
 10  select 'men>accessories>small>leather>goods **(YES MATCH)**'                            from dual
 11  )
 12  select * from test
 13  where instr(lower(col), 'small')   > 0
 14    and instr(lower(col), 'leather') > 0
 15    and instr(lower(col), 'goods')   > 0;

COL
------------------------------------------------------------------------------
Men > Accessories > Bags & Leather Goods > Small Leather Goods **(YES MATCH)**
Men > Accessories > Bags & Leather Goods > Small Leather Goods **(YES MATCH)**
Men/Small_Leather_Goods/Sale **(YES MATCH)**
Men/Small_Leather_Goods **(YES MATCH)**
men>accessories>small>leather>goods **(YES MATCH)**

SQL>

（是的，我知道，(YES/NO MATCH) 不是字符串的一部分，但我懒得删除它。）

Answer 2

假设您想要 small、leather 和 goods 的顺序，请尝试：

regexp_like(GLOBAL_CATEGORY,'*small.*.leather.*goods*', 'i')

。 匹配任何字符
* 匹配零次或多次出现的前面的子表达式
i 是一个匹配模式，指定不区分大小写匹配

Demo这里

oracle regexp_like: 将 Perl 正则表达式用于 AND 运算符等价物

oracle regexp_like: using Perl regexp for AND operator equivalent

regex

oracle

regex-lookarounds

regexp-like