> For the complete documentation index, see [llms.txt](https://help.impact.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.impact.com/brand/zh/what-would-you-like-to-learn-about/platform-features/promo-codes/regular-expression/match-expression-tool-regex.md).
# 匹配表达式工具正则
当你知道产品 SKU、类别或促销代码中的一部分字符组合，并且希望将这些字符组合与通过转化传入的 SKU、类别或促销代码进行匹配时，会使用匹配表达式工具。只有在你没有完整的项目列表时，才需要使用此工具。 [例外列表](/brand/zh/what-would-you-like-to-learn-about/account-administration/program-settings/exception-lists/create-category-and-sku-exception-lists.md).
1. 在顶部导航栏中，选择  **\[用户资料] → 设置**.
2. 在右侧列下方 *例外列表*，选择 *例外列表* 部分下，选择 **SKU**.
3. 选择 **添加新的 SKU 列表**.
4. 选择 **显示高级设置** .
5. 在“匹配表达式”字段中，匹配表达式工具有 2 个重要组成部分：
| 组件 | 说明 |
| ------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------- |
| [括号内的正则表达式](/brand/zh/what-would-you-like-to-learn-about/platform-features/promo-codes/regular-expression/regex-inside-the-parentheses.md) | 与随附的例外列表中的项目完全匹配。 |
| [括号外的正则表达式](/brand/zh/what-would-you-like-to-learn-about/platform-features/promo-codes/regular-expression/regex-outside-the-parentheses.md) | 为要与传入的转化数据进行匹配的例外列表项目设置条件。 |
---
# Agent Instructions
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## Querying This Documentation
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