{"id":20341,"date":"2026-02-23T14:34:38","date_gmt":"2026-02-23T06:34:38","guid":{"rendered":"https:\/\/92it.top\/?p=20341"},"modified":"2026-02-23T14:34:38","modified_gmt":"2026-02-23T06:34:38","slug":"langchain-%e5%bc%80%e5%8f%91%e8%87%aa%e5%ae%9a%e4%b9%89%e7%bb%84%e4%bb%b6_%e7%b3%bb%e5%88%9712","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=20341","title":{"rendered":"LangChain \u5f00\u53d1\u81ea\u5b9a\u4e49\u7ec4\u4ef6_\u7cfb\u521712"},"content":{"rendered":"\n<p>\u8f6c\u8f7d\uff1a\u5c0f\u7ea2\u4e66 AI\u4ea7\u54c1\u8d75\u54e5<\/p>\n\n\n\n<p><strong>\u524d\u8a00\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u5230\u4eca\u5929\uff0c\u6211\u4eec\u5df2\u7ecf\u4e00\u8d77\u8d70\u8fc7\u4e86\u5f88\u957f\u7684\u8def\u3002\u6211\u4eec\u4ece\u96f6\u5f00\u59cb\uff0c\u5b66\u4f1a\u4e86\u7528 LangChain \u6784\u5efa\u5e94\u7528\uff0c\u638c\u63e1\u4e86\u9ad8\u7ea7 RAG \u67b6\u6784\uff0c\u653b\u514b\u4e86\u6027\u80fd\u4f18\u5316\u548c\u5de5\u7a0b\u6392\u5751\u7684\u96be\u9898\uff0c\u751a\u81f3\u8fd8\u8ba9 AI \u5b66\u4f1a\u4f7f\u7528\u5de5\u5177\uff0c\u5b66\u4f1a\u4e86\u7406\u89e3\u591a\u6a21\u6001\u4e16\u754c\u3002\u53ef\u4ee5\u8bf4\uff0c\u4f60\u4eec\u73b0\u5728\u770b\u5230\u7684 LangChain\uff0c\u662f\u4e00\u4e2a\u62e5\u6709\u6d77\u91cf\u6b66\u5668\u7684\u5de8\u5927\u4ed3\u5e93\u3002<\/p>\n\n\n\n<p>\u4f46\u4efb\u4f55\u4e00\u4e2a\u8d44\u6df1\u7684\u6307\u6325\u5b98\u90fd\u77e5\u9053\uff0c\u4e3a\u81ea\u5df1\u91cf\u8eab\u5b9a\u505a\u7684\u624d\u662f\u6700\u8d81\u624b\u7684\u6b66\u5668\u3002\u9884\u5236\u7684\u6b66\u5668\u518d\u597d\uff0c\u4e5f\u65e0\u6cd5\u5b8c\u5168\u8d34\u5408\u4f60\u6240\u5728\u4f01\u4e1a\u7684\u4e2a\u6027\u5316\u573a\u666f\uff1a<\/p>\n\n\n\n<ul>\n<li>\u4f60\u7684\u7528\u6237\u6570\u636e\uff0c\u53ef\u80fd\u8eba\u5728\u4e00\u4e2a\u6ca1\u4eba\u6562\u52a8\u7684 Oracle \u8001\u6570\u636e\u5e93\u91cc\u3002<\/li>\n\n\n\n<li>\u4f60\u7684\u5b9e\u65f6\u5e93\u5b58\u4fe1\u606f\uff0c\u9700\u8981\u901a\u8fc7\u4e00\u4e2a\u5185\u90e8\u7684 RPC \u63a5\u53e3\u624d\u80fd\u67e5\u8be2\u3002<\/li>\n\n\n\n<li>\u4f60\u7684\u9879\u76ee\u7ba1\u7406\u6d41\u7a0b\uff0c\u6df1\u5ea6\u7ed1\u5b9a\u5728\u4e00\u4e2a\u81ea\u7814\u7684 Jira \u63d2\u4ef6\u4e0a\u3002<\/li>\n<\/ul>\n\n\n\n<p>LangChain \u63d0\u4f9b\u7684\u51e0\u767e\u4e2a\u5305\u91cc\uff0c\u6ca1\u6709\u8fd9\u4e9b\u3002\u90a3\u4e48\uff0c\u6e38\u620f\u7ed3\u675f\u4e86\u5417\uff1f<\/p>\n\n\n\n<p>\u6070\u6070\u76f8\u53cd\uff0c\u8fd9\u624d\u662f\u6e38\u620f\u771f\u6b63\u7684\u5f00\u59cb\u3002LangChain \u6700\u5f3a\u5927\u7684\u7279\u6027\uff0c\u4e0d\u662f\u5b83\u63d0\u4f9b\u4e86\u4ec0\u4e48\uff0c\u800c\u662f\u5b83\u5141\u8bb8\u4f60\u521b\u9020\u4ec0\u4e48\u3002\u4eca\u5929\uff0c\u6211\u4eec\u6765\u804a\u804a\uff1a<strong>\u81ea\u5b9a\u4e49\u6269\u5c55\u5f00\u53d1<\/strong>\u3002\u6211\u4eec\u5c06\u4eb2\u81ea\u4e3a AI \u6253\u9020\u5168\u65b0\u7684 \u201c\u624b\u81c2\u201d \u548c \u201c\u8bb0\u5fc6\u201d\uff0c\u8ba9\u5b83\u80fd\u591f\u65e0\u7f1d\u5730\u63a5\u5165\u4f60\u516c\u53f8\u4e2a\u6027\u5316\u7684\u7cfb\u7edf\u91cc\u3002<\/p>\n\n\n\n<p>\u51c6\u5907\u597d\u4e86\u5417\uff1f\u54b1\u4eec\u53d1\u8f66\u4e86\uff0c\u8d70\u8d77\u3002\u3002\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u4e00\u3001\u4e3a\u4ec0\u4e48\u6807\u51c6\u7ec4\u4ef6\u4e0d\u591f\u7528\uff1f\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u5728\u52a8\u624b\u4e4b\u524d\uff0c\u6211\u4eec\u5fc5\u987b\u5148\u7edf\u4e00\u601d\u60f3\uff1a\u4e3a\u4ec0\u4e48\u8981\u8d39\u529b\u53bb\u81ea\u5b9a\u4e49\uff1f\u7528\u73b0\u6210\u7684\u4e0d\u9999\u5417\uff1f<\/p>\n\n\n\n<p>LangChain \u7684\u96c6\u6210\u751f\u6001\uff0c\u89e3\u51b3\u7684\u662f\u901a\u7528\u95ee\u9898\u3002\u6bd4\u5982\uff0c\u8fde\u63a5 MySQL\uff0c\u8fde\u63a5 Salesforce\uff0c\u8fde\u63a5 Google Drive\u3002\u8fd9\u4e9b\u90fd\u662f\u6807\u51c6\u5316\u7684\u3001\u9762\u5411\u516c\u4f17\u7684\u670d\u52a1\u3002<\/p>\n\n\n\n<p>\u4f46\u4f01\u4e1a\u7684\u6838\u5fc3\u7ade\u4e89\u529b\uff0c\u5f80\u5f80\u4f53\u73b0\u5728\u90a3\u4e9b\u975e\u6807\u7684\u3001\u79c1\u6709\u7684\u7cfb\u7edf\u4e2d\u3002\u8fd9\u4e9b\u7cfb\u7edf\u6c89\u6dc0\u4e86\u516c\u53f8\u591a\u5e74\u7684\u4e1a\u52a1\u903b\u8f91\u548c\u6570\u636e\u8d44\u4ea7\u3002\u80fd\u591f\u5c06 AI \u80fd\u529b\u4e0e\u8fd9\u4e9b\u7cfb\u7edf\u6df1\u5ea6\u878d\u5408\uff0c\u624d\u80fd\u521b\u9020\u51fa\u771f\u6b63\u7684\u62a4\u57ce\u6cb3\u3002\u81ea\u5b9a\u4e49\u8ba9\u4f60\u80fd\u505a\u5230\uff1a<\/p>\n\n\n\n<ul>\n<li>\u8ba9 AI \u5ba2\u670d\u80fd\u67e5\u8be2\u4e00\u4e2a<strong>\u5185\u90e8\u8ba2\u5355\u7ba1\u7406\u7cfb\u7edf<\/strong>\uff0c\u5b9e\u65f6\u56de\u7b54\u7528\u6237\u7684\u7269\u6d41\u72b6\u6001\u3002<\/li>\n\n\n\n<li>\u8ba9 AI \u9500\u552e\u52a9\u624b\u80fd\u64cd\u4f5c<strong>\u516c\u53f8\u7684 CRM \u7cfb\u7edf<\/strong>\uff0c\u81ea\u52a8\u4e3a\u65b0\u7ebf\u7d22\u521b\u5efa\u8ddf\u8fdb\u4efb\u52a1\u3002<\/li>\n\n\n\n<li>\u8ba9 AI \u6570\u636e\u5206\u6790\u5e08\u80fd\u8fde\u63a5\u4e00\u4e2a<strong>\u79c1\u6709\u7684\u6570\u636e\u4ed3\u5e93<\/strong>\uff0c\u6267\u884c\u7279\u5b9a\u7684 SQL \u67e5\u8be2\u5e76\u751f\u6210\u62a5\u544a\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5728 LangChain \u4e2d\uff0c\u5b9e\u73b0\u8fd9\u79cd\u8fde\u63a5\uff0c\u6700\u4e3b\u8981\u901a\u8fc7\u81ea\u5b9a\u4e49\u4e24\u79cd\u7ec4\u4ef6\uff1a<\/p>\n\n\n\n<ol>\n<li><strong>\u81ea\u5b9a\u4e49\u5de5\u5177 (Tool)<\/strong>\uff1a\u4e3a\u4f60\u7684 Agent \u521b\u9020\u65b0\u7684\u884c\u52a8\u80fd\u529b\u3002\u8ba9\u5b83\u80fd\u505a\u4e00\u4e9b\u4e8b\uff0c\u6bd4\u5982\u8c03\u7528\u4e00\u4e2a API\u3001\u4fee\u6539\u4e00\u4e2a\u6570\u636e\u5e93\u6761\u76ee\u3002<\/li>\n\n\n\n<li><strong>\u81ea\u5b9a\u4e49\u68c0\u7d22\u5668 (Retriever)<\/strong>\uff1a\u4e3a\u4f60\u7684 RAG \u7cfb\u7edf\u63d0\u4f9b\u65b0\u7684\u77e5\u8bc6\u6765\u6e90\u3002\u8ba9\u5b83\u80fd\u4ece\u4efb\u4f55\u5730\u65b9\u83b7\u53d6\u4fe1\u606f\uff0c\u65e0\u8bba\u90a3\u4e2a\u5730\u65b9\u662f SQL \u6570\u636e\u5e93\u3001\u4e00\u4e2a\u5185\u90e8 wiki\uff0c\u8fd8\u662f\u4e00\u4e2a Elasticsearch \u96c6\u7fa4\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u4e8c\u3001\u81ea\u5b9a\u4e49 Tool\uff1a\u8ba9 AI \u5927\u8111\u6709\u624b\u6709\u811a\uff01\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\uff0cAgent \u7684\u5a01\u529b\u53d6\u51b3\u4e8e\u5b83\u62e5\u6709\u591a\u5c11\u5de5\u5177\u3002\u4f46\u5de5\u5177\u5230\u5e95\u662f\u4ec0\u4e48\uff1f\u4ece Agent \u7684\u89c6\u89d2\u770b\uff0c\u4e00\u4e2a\u5de5\u5177\u5305\u542b\u4e09\u8981\u7d20\uff1a<\/p>\n\n\n\n<ul>\n<li><strong>\u540d\u79f0 (name)<\/strong>\uff1a\u4e00\u4e2a\u72ec\u4e00\u65e0\u4e8c\u7684\u6807\u8bc6\u7b26\uff0c\u6bd4\u5982 <code>query_order_status<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u63cf\u8ff0 (description)<\/strong>\uff1a\u8fd9\u662f\u7ed9 LLM \u770b\u7684\uff0c\u662f\u6240\u6709\u73af\u8282\u4e2d\u6700\u6700\u6700\u91cd\u8981\u7684\u4e00\u90e8\u5206\uff01\u5b83\u544a\u8bc9 LLM\uff0c\u8fd9\u4e2a\u5de5\u5177\u662f\u5e72\u4ec0\u4e48\u7684\uff0c\u4ec0\u4e48\u65f6\u5019\u5e94\u8be5\u7528\u5b83\uff0c\u5b83\u9700\u8981\u4ec0\u4e48\u53c2\u6570\u3002<\/li>\n\n\n\n<li><strong>\u53c2\u6570\u7ed3\u6784 (args_schema)<\/strong>\uff1a\u5b9a\u4e49\u4e86\u8fd9\u4e2a\u5de5\u5177\u9700\u8981\u54ea\u4e9b\u8f93\u5165\uff0c\u4ee5\u53ca\u6bcf\u4e2a\u8f93\u5165\u7684\u7c7b\u578b\u3002<\/li>\n<\/ul>\n\n\n\n<p>LangChain \u63d0\u4f9b\u4e86\u4e24\u79cd\u521b\u5efa\u81ea\u5b9a\u4e49\u5de5\u5177\u7684\u65b9\u5f0f\uff1a\u4e00\u79cd\u7b80\u5355\u5feb\u6377\uff0c\u4e00\u79cd\u7075\u6d3b\u5f3a\u5927\u3002<\/p>\n\n\n\n<p><strong>\ud83d\udd392.1. \u7b80\u5355\u65b9\u5f0f\uff1a\u4f7f\u7528 @tool \u88c5\u9970\u5668<\/strong><\/p>\n\n\n\n<p>\u8fd9\u79cd\u65b9\u5f0f\u6bd4\u8f83\u7b80\u5355\uff0c\u63a8\u8350\u5165\u95e8\u4f7f\u7528\u3002\u4f60\u53ea\u9700\u8981\u5199\u4e00\u4e2a\u666e\u901a\u7684 Python \u51fd\u6570\uff0c\u7136\u540e\u7528 <code>@tool<\/code> \u88c5\u9970\u4e00\u4e0b\uff0cLangChain \u5c31\u4f1a\u81ea\u52a8\u5e2e\u4f60\u641e\u5b9a\u4e0a\u9762\u8bf4\u7684\u4e09\u8981\u7d20\u3002<\/p>\n\n\n\n<ul>\n<li><strong>\u540d\u79f0<\/strong>\uff1a\u9ed8\u8ba4\u5c31\u662f\u4f60\u7684\u51fd\u6570\u540d\u3002<\/li>\n\n\n\n<li><strong>\u63cf\u8ff0<\/strong>\uff1a\u81ea\u52a8\u53d6\u81ea\u4f60\u7684\u51fd\u6570\u7684\u6587\u6863\u5b57\u7b26\u4e32\uff08docstring\uff09\u3002<\/li>\n\n\n\n<li><strong>\u53c2\u6570\u7ed3\u6784<\/strong>\uff1a\u81ea\u52a8\u6839\u636e\u4f60\u7684\u51fd\u6570\u7684\u7c7b\u578b\u63d0\u793a\uff08type hints\uff09\u6765\u751f\u6210\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u5b9e\u6218\u573a\u666f<\/strong>\uff1a\u521b\u5efa\u4e00\u4e2a\u67e5\u8be2\u5185\u90e8\u5458\u5de5\u4fe1\u606f\u7684\u5de5\u5177<\/p>\n\n\n\n<p>\u5047\u8bbe\u4f60\u7684\u516c\u53f8\u6709\u4e00\u4e2a\u5185\u90e8 API\uff0c\u53ef\u4ee5\u901a\u8fc7\u5458\u5de5\u59d3\u540d\u67e5\u8be2\u5176\u90ae\u7bb1\u548c\u6240\u5c5e\u90e8\u95e8\u3002\u6211\u4eec\u9700\u8981\u4e3a HR \u667a\u80fd\u52a9\u624b Agent \u521b\u5efa\u4e00\u4e2a\u80fd\u8c03\u7528\u8fd9\u4e2a API \u7684\u5de5\u5177\u3002<\/p>\n\n\n\n<p><strong>\u7b2c\u4e00\u6b65\uff1a\u7f16\u5199\u6838\u5fc3\u903b\u8f91\u51fd\u6570\uff08\u6a21\u62df API \u8c03\u7528\uff09<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u8fd9\u662f\u4e00\u4e2a\u6a21\u62df\u7684\u5185\u90e8\u5458\u5de5\u6570\u636e\u5e93\n_INTERNAL_EMPLOYEE_DB = {\n    \"\u5f20\u4e09\": {\"email\": \"zhang.san@mycompany.com\", \"department\": \"\u6280\u672f\u90e8\"},\n    \"\u674e\u56db\": {\"email\": \"li.si@mycompany.com\", \"department\": \"\u4ea7\u54c1\u90e8\"},\n}\n\ndef _query_employee_api(employee_name: str) -> str:\n    \"\"\"\u8fd9\u662f\u4e00\u4e2a\u6a21\u62df\u7684API\u8c03\u7528\u51fd\u6570\"\"\"\n    if employee_name in _INTERNAL_EMPLOYEE_DB:\n        return str(_INTERNAL_EMPLOYEE_DB[employee_name])\n    else:\n        return f\"\u627e\u4e0d\u5230\u540d\u4e3a'{employee_name}'\u7684\u5458\u5de5\u3002\"<\/pre>\n\n\n\n<p><strong>\u7b2c\u4e8c\u6b65\uff1a\u4f7f\u7528 <code>@tool<\/code> \u5c01\u88c5\u6210\u5de5\u5177<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">from langchain.tools import tool\n\n@tool\ndef query_employee_info(employee_name: str) -> str:\n    \"\"\"\n    \u67e5\u8be2\u5185\u90e8\u5458\u5de5\u7684\u90ae\u7bb1\u548c\u6240\u5c5e\u90e8\u95e8\u3002\n    \u53c2\u6570:\n        employee_name: \u5458\u5de5\u59d3\u540d (str)\n    \u8fd4\u56de:\n        \u5458\u5de5\u4fe1\u606f\u5b57\u7b26\u4e32\u6216\u672a\u627e\u5230\u63d0\u793a\n    \"\"\"\n    return _query_employee_api(employee_name)\n\n\n\n@tool\ndef employee_info_search(employee_name: str) -> str:\n    \"\"\"\n    \u5f53\u9700\u8981\u67e5\u8be2\u516c\u53f8\u5185\u90e8\u5458\u5de5\u7684\u90ae\u7bb1\u6216\u6240\u5c5e\u90e8\u95e8\u65f6\uff0c\u4f7f\u7528\u6b64\u5de5\u5177\u3002\n    \u4f60\u9700\u8981\u63d0\u4f9b\u5458\u5de5\u7684\u5b8c\u6574\u59d3\u540d\u4f5c\u4e3a\u8f93\u5165\u3002\n    \u4f8b\u5982\uff0c\u8f93\u5165'\u674e\u56db'\uff0c\u5c31\u53ef\u4ee5\u627e\u5230\u4ed6\u7684\u8054\u7cfb\u4fe1\u606f\u3002\n    \"\"\"\n    # \u5728\u5de5\u5177\u5185\u90e8\uff0c\u8c03\u7528\u6211\u4eec\u521a\u624d\u5199\u7684\u6838\u5fc3\u903b\u8f91\n    return _query_employee_api(employee_name)<\/pre>\n\n\n\n<p>\ud83d\udca1 <strong>\u4ea7\u54c1\u540c\u5b66\u8bf7\u6ce8\u610f<\/strong>\uff1a<\/p>\n\n\n\n<p>\u4e0a\u9762\u90a3\u4e2a\u957f\u957f\u7684\u6587\u6863\u5b57\u7b26\u4e32\uff0c\u4e0d\u662f\u5199\u7ed9\u7a0b\u5e8f\u5458\u770b\u7684\uff0c\u662f\u5199\u7ed9 LLM \u770b\u7684\u3002\u4f60\u5fc5\u987b\u7528\u81ea\u7136\u8bed\u8a00\u6e05\u6670\u5730\u544a\u8bc9\u5b83\uff1a<strong>\u8fd9\u4e2a\u5de5\u5177\u662f\u5e72\u561b\u7684\uff1f\u4ec0\u4e48\u65f6\u5019\u7528\uff1f\u9700\u8981\u6211\u7ed9\u4f60\u4ec0\u4e48\uff1f<\/strong> \u4f60\u7684\u63cf\u8ff0\u8d8a\u6e05\u6670\uff0cAgent \u5c31\u8d8a\u80fd\u9886\u4f1a\u4f60\u7684\u610f\u601d\uff0c\u5728\u6070\u5f53\u7684\u65f6\u5019\u8c03\u7528\u5b83\u3002\u8fd9\u4e2a\u63cf\u8ff0\uff0c\u5c31\u662f\u4f60\u4e3a\u8fd9\u4e2a\u5de5\u5177\u529f\u80fd\u6240\u64b0\u5199\u7684\u4ea7\u54c1\u9700\u6c42\u89c4\u683c\u8bf4\u660e\u4e66\u3002<\/p>\n\n\n\n<p><strong>\u7b2c\u4e09\u6b65\uff1a\u5728 Agent \u4e2d\u4f7f\u7528\u8fd9\u4e2a\u65b0\u5de5\u5177<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">from langchain_openai import ChatOpenAI\nfrom langchain.agents import AgentExecutor, create_openai_tools_agent\nfrom langchain.prompts import ChatPromptTemplate, MessagesPlaceholder\n\n# \u521d\u59cb\u5316\u6a21\u578b\nllm = ChatOpenAI(model=\"gpt-4o\")\n\n# \u5b9a\u4e49\u5de5\u5177\u5217\u8868\ntools = [employee_info_search]\n\n# \u6784\u5efa\u63d0\u793a\u8bcd\u6a21\u677f\nprompt = ChatPromptTemplate.from_messages([\n    (\"system\", \"\u4f60\u662f\u4e00\u4e2aHR\u667a\u80fd\u52a9\u624b\uff0c\u8d1f\u8d23\u67e5\u8be2\u5458\u5de5\u4fe1\u606f\u3002\"),\n    (\"user\", \"{input}\"),\n    MessagesPlaceholder(variable_name=\"agent_scratchpad\"),\n])\n\n# \u521b\u5efaAgent\nagent = create_openai_tools_agent(llm, tools, prompt)\n\n# \u6267\u884cAgent\nagent_executor = AgentExecutor(agent=agent, tools=tools, verbose=True)<\/pre>\n\n\n\n<p>\u5f53\u4f60\u8fd0\u884c\u8fd9\u6bb5\u4ee3\u7801\uff0c\u5e76\u6253\u5f00 <code>verbose=True<\/code> \u65f6\uff0c\u4f60\u5c31\u80fd\u770b\u5230 Agent \u7684\u601d\u8003\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n<ol>\n<li>[Agent] \u601d\u8003\uff1a\u7528\u6237\u60f3\u627e \u201c\u674e\u56db\u7684\u90ae\u7bb1\u201d\u3002\u6211\u68c0\u67e5\u4e86\u4e00\u4e0b\u6211\u7684\u5de5\u5177\u7bb1\uff0c\u53d1\u73b0\u4e00\u4e2a\u53eb <code>employee_info_search<\/code> \u7684\u5de5\u5177\uff0c\u5b83\u7684\u63cf\u8ff0\u8bf4\u53ef\u4ee5\u67e5\u8be2\u5458\u5de5\u7684\u90ae\u7bb1\u548c\u90e8\u95e8\uff0c\u9700\u8981\u8f93\u5165\u5458\u5de5\u59d3\u540d\u3002\n<ul>\n<li>\u4ee5 \u201c\u67e5\u8be2\u516c\u53f8\u5185\u90e8\u5458\u5de5\u7684\u90ae\u7bb1\u201d\u3002\u592a\u68d2\u4e86\uff0c\u6b63\u597d\u80fd\u7528\u3002\u8fd9\u4e2a\u5de5\u5177\u9700\u8981\u4e00\u4e2a <code>employee_name<\/code> \u53c2\u6570\uff0c\u6211\u4ece\u7528\u6237\u7684\u95ee\u9898\u91cc\u63d0\u53d6\u51fa\u6765\u4e86\uff0c\u5c31\u662f \u201c\u674e\u56db\u201d\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>[Agent] \u8c03\u7528<\/strong>\uff1a<code>Invoking: employee_info_search with {'employee_name': '\u674e\u56db'}<\/code><\/li>\n\n\n\n<li><strong>[Tool]<\/strong>\uff08<code>employee_info_search<\/code> \u51fd\u6570\u88ab\u6267\u884c\uff0c\u8fd4\u56de\u4e86\u7ed3\u679c\u5b57\u7b26\u4e32\uff09<\/li>\n\n\n\n<li><strong>[Agent] \u601d\u8003<\/strong>\uff1a\u6211\u62ff\u5230\u4e86\u5de5\u5177\u7684\u8fd4\u56de\u7ed3\u679c\uff1a<code>{'email': 'li.si@mycompany.com', 'department': '\u4ea7\u54c1\u90e8'}<\/code>\u3002\u73b0\u5728\u6211\u8981\u628a\u8fd9\u4e2a\u7ed3\u679c\u7528\u53cb\u597d\u7684\u65b9\u5f0f\u544a\u8bc9\u7528\u6237\u3002<\/li>\n\n\n\n<li><strong>[Agent] \u751f\u6210\u6700\u7ec8\u56de\u7b54<\/strong>\uff1a\u201c\u5f53\u7136\u53ef\u4ee5\uff0c\u674e\u56db\u7684\u90ae\u7bb1\u662f li.si@mycompany.com\uff0c\u4ed6\u5c5e\u4e8e\u4ea7\u54c1\u90e8\u3002\u201d<\/li>\n<\/ol>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\ud83d\udd392.2. \u9ad8\u7ea7\u65b9\u5f0f\uff1a\u7ee7\u627f <code>BaseTool<\/code> \u7c7b<\/strong><\/p>\n\n\n\n<p><code>@tool<\/code> \u88c5\u9970\u5668\u867d\u7136\u65b9\u4fbf\uff0c\u4f46\u6709\u5176\u5c40\u9650\u6027\u3002\u5f53\u4f60\u9700\u8981\u66f4\u7cbe\u7ec6\u7684\u63a7\u5236\u65f6\uff0c\u6bd4\u5982\uff1a<\/p>\n\n\n\n<ul>\n<li>\u9700\u8981\u5206\u522b\u5b9a\u4e49\u540c\u6b65\u6267\u884c\uff08<code>_run<\/code>\uff09\u548c\u5f02\u6b65\u6267\u884c\uff08<code>_arun<\/code>\uff09\u7684\u903b\u8f91\u3002<\/li>\n\n\n\n<li>\u5de5\u5177\u7684\u521d\u59cb\u5316\u8fc7\u7a0b\u6bd4\u8f83\u590d\u6742\uff0c\u9700\u8981\u5728\u521b\u5efa\u65f6\u4f20\u5165\u4e00\u4e9b\u914d\u7f6e\u3002<\/li>\n\n\n\n<li>\u9700\u8981\u66f4\u4e25\u683c\u5730\u5b9a\u4e49\u8f93\u5165\u53c2\u6570\u7684\u7ed3\u6784\u548c\u9a8c\u8bc1\u89c4\u5219\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u65f6\uff0c\u4f60\u5c31\u9700\u8981\u901a\u8fc7\u7ee7\u627f <code>BaseTool<\/code> \u6765\u521b\u5efa\u4e00\u4e2a\u7c7b\u3002<\/p>\n\n\n\n<p><strong>\u5b9e\u6218\u573a\u666f<\/strong>\uff1a\u521b\u5efa\u4e00\u4e2a\u67e5\u8be2\u5b9e\u65f6\u4ea7\u54c1\u5e93\u5b58\u7684\u5de5\u5177<\/p>\n\n\n\n<p><strong>\u7b2c\u4e00\u6b65\uff1a\u4f7f\u7528 Pydantic \u5b9a\u4e49\u4e25\u683c\u7684\u8f93\u5165\u53c2\u6570<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">from pydantic import BaseModel, Field\n\nclass ProductInventoryInput(BaseModel):\n    product_sku: str = Field(description=\"\u5fc5\u987b\u63d0\u4f9b\u4ea7\u54c1\u7684\u6807\u51c6\u5e93\u5b58\u5355\u4f4d\uff08SKU\uff09\uff0c\u4f8b\u5982 'TSHIRT-RED-L'\u3002\")<\/pre>\n\n\n\n<p>\u4f7f\u7528 Pydantic \u7684\u597d\u5904\u662f\uff0c\u5b83\u4e0d\u4ec5\u80fd<strong>\u81ea\u52a8\u751f\u6210\u53c2\u6570\u7684 JSON Schema \u7ed9 LLM \u770b<\/strong>\uff0c\u8fd8\u80fd\u5728\u5de5\u5177\u88ab\u8c03\u7528\u65f6\uff0c<strong>\u81ea\u52a8\u9a8c\u8bc1\u4f20\u5165\u7684\u53c2\u6570\u662f\u5426\u5408\u6cd5<\/strong>\u3002<\/p>\n\n\n\n<p><strong>\u7b2c\u4e8c\u6b65\uff1a\u521b\u5efa\u5de5\u5177\u7c7b<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">from typing import Type\nfrom langchain.tools import BaseTool\n\ndef _query_inventory_db(sku: str) -> int:\n    \"\"\"\u6a21\u62df\u67e5\u8be2\u6570\u636e\u5e93\uff0c\u8fd4\u56de\u5e93\u5b58\u6570\u91cf\"\"\"\n    # \u5b9e\u9645\u573a\u666f\u8fd9\u91cc\u662f\u8fde\u63a5\u6570\u636e\u5e93\u7684\u590d\u6742\u903b\u8f91\n    if sku == \"TSHIRT-RED-L\":\n        return 120\n    else:\n        return 0\n\n\nclass ProductInventoryTool(BaseTool):\n    name: str = \"realtime_product_inventory_check\"\n    description: str = \"\u7528\u4e8e\u67e5\u8be2\u7279\u5b9a\u4ea7\u54c1SKU\u7684\u5b9e\u65f6\u5e93\u5b58\u6570\u91cf\u3002\u8fd9\u4e2a\u5de5\u5177\u975e\u5e38\u7cbe\u51c6\uff0c\u76f4\u63a5\u8fde\u63a5\u751f\u4ea7\u6570\u636e\u5e93\u3002\"\n    args_schema: Type[BaseModel] = ProductInventoryInput\n\n    def _run(self, product_sku: str) -> str:\n        \"\"\"\u5de5\u5177\u7684\u540c\u6b65\u6267\u884c\u903b\u8f91\"\"\"\n        inventory_count = _query_inventory_db(product_sku)\n        return f\"\u4ea7\u54c1SKU '{product_sku}' \u7684\u5f53\u524d\u5e93\u5b58\u4e3a: {inventory_count} \u4ef6\u3002\"\n\n    async def _arun(self, product_sku: str) -> str:\n        \"\"\"\u5de5\u5177\u7684\u5f02\u6b65\u6267\u884c\u903b\u8f91\uff08\u53ef\u9009\uff09\"\"\"\n        # \u5728\u771f\u5b9e\u5e94\u7528\u4e2d\uff0c\u8fd9\u91cc\u53ef\u80fd\u662f\u5f02\u6b65\u7684\u6570\u636e\u5e93\u5ba2\u6237\u7aef\u8c03\u7528\n        return self._run(product_sku)  # \u4e3a\u7b80\u5316\uff0c\u6211\u4eec\u76f4\u63a5\u8c03\u7528\u540c\u6b65\u903b\u8f91<\/pre>\n\n\n\n<p><strong>\u7b2c\u4e09\u6b65\uff1a\u5728 Agent \u4e2d\u4f7f\u7528<\/strong><\/p>\n\n\n\n<p>\u4f7f\u7528\u65b9\u6cd5\u548c\u4e4b\u524d\u5b8c\u5168\u4e00\u6837\uff0c\u53ea\u662f\u5728\u521b\u5efa <code>tools<\/code> \u5217\u8868\u65f6\uff0c\u9700\u8981\u5b9e\u4f8b\u5316\u8fd9\u4e2a\u7c7b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">tools = [ProductInventoryTool()]\n<\/pre>\n\n\n\n<p>\ud83d\udca1 <strong>\u4ea7\u54c1\u7ecf\u7406\u7684\u6838\u5fc3\u5de5\u4f5c<\/strong>\uff1a<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u81ea\u5b9a\u4e49\u5de5\u5177\uff0c\u4f60\u7684\u6838\u5fc3\u4ea7\u51fa\u7269\uff0c\u5c31\u662f\u4e00\u4efd\u6e05\u6670\u7684<strong>\u5de5\u5177\u89c4\u683c\u8bf4\u660e\u4e66<\/strong>\u3002\u5b83\u9700\u8981\u660e\u786e\uff1a<\/p>\n\n\n\n<ul>\n<li>\u5de5\u5177\u7684\u4e1a\u52a1\u76ee\u6807\uff1a\u8fd9\u4e2a\u5de5\u5177\u8981\u89e3\u51b3\u4ec0\u4e48\u4e1a\u52a1\u95ee\u9898\uff1f<\/li>\n\n\n\n<li>\u5de5\u5177\u7684\u540d\u79f0\uff1a\u4e00\u4e2a\u7b80\u6d01\u3001\u8868\u610f\u7684\u82f1\u6587\u540d\u3002<\/li>\n\n\n\n<li>\u7ed9 LLM \u770b\u7684\u63cf\u8ff0\uff1a\u8fd9\u662f\u91cd\u4e2d\u4e4b\u91cd\uff0c\u53c2\u8003\u6211\u4eec\u4e0a\u9762\u7684\u4f8b\u5b50\u3002<\/li>\n\n\n\n<li>\u8f93\u5165\u53c2\u6570\u5b9a\u4e49\uff1a\u9700\u8981\u54ea\u4e9b\u53c2\u6570\uff1f\u6bcf\u4e2a\u53c2\u6570\u7684\u542b\u4e49\u662f\u4ec0\u4e48\uff1f\u662f\u5426\u5fc5\u987b\uff1f\u662f\u4ec0\u4e48\u7c7b\u578b\uff1f<\/li>\n\n\n\n<li>\u8f93\u51fa\u7ed3\u679c\u5b9a\u4e49\uff1a\u6210\u529f\u65f6\u8fd4\u56de\u4ec0\u4e48\uff1f\u5931\u8d25\u65f6\u8fd4\u56de\u4ec0\u4e48\uff1f\u683c\u5f0f\u662f\u600e\u6837\u7684\uff1f<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4efd\u6587\u6863\uff0c\u5c31\u662f\u8fde\u63a5\u4f60\u7684\u4ea7\u54c1\u6784\u60f3\u548c\u6280\u672f\u5b9e\u73b0\u7684\u6865\u6881\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u4e09\u3001\u81ea\u5b9a\u4e49 Retriever\uff1a\u4e0d\u4ec5\u662f\u67e5\u5411\u91cf\u5e93<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u6211\u4eec\u77e5\u9053\uff0cRAG \u7684\u6838\u5fc3\u662f<strong>\u68c0\u7d22\u5668\uff08Retriever\uff09<\/strong>\u3002LangChain \u5185\u7f6e\u4e86\u5404\u79cd\u5411\u91cf\u6570\u636e\u5e93\u7684\u68c0\u7d22\u5668\u3002\u4f46\u5982\u679c\u4f60\u7684\u77e5\u8bc6\u6e90\u6839\u672c\u4e0d\u662f\u4e00\u4e2a\u5411\u91cf\u6570\u636e\u5e93\u5462\uff1f<\/p>\n\n\n\n<p>\u6bd4\u5982\uff0c\u4f60\u7684\u77e5\u8bc6\u5c31\u5b58\u5728\u4e00\u4e2a SQL \u6570\u636e\u5e93\u7684\u7279\u5b9a\u8868\u91cc\uff0c\u6216\u8005\u9700\u8981\u901a\u8fc7\u4e00\u4e2a\u5185\u90e8\u7684 wiki API \u6765\u641c\u7d22\u3002\u8fd9\u65f6\uff0c\u6211\u4eec\u5c31\u9700\u8981\u81ea\u5b9a\u4e49\u4e00\u4e2a\u68c0\u7d22\u5668\u3002<\/p>\n\n\n\n<p><strong>\ud83d\udd39\u81ea\u5b9a\u4e49\u68c0\u7d22\u5668\u7684\u672c\u8d28<\/strong><\/p>\n\n\n\n<p>\u4e00\u4e2a\u68c0\u7d22\u5668\uff0c\u65e0\u8bba\u591a\u590d\u6742\uff0c\u5176\u6838\u5fc3\u5c31\u662f\u4e00\u4e2a\u51fd\u6570\uff1a<code>_get_relevant_documents<\/code>\u3002\u8fd9\u4e2a\u51fd\u6570\u63a5\u6536\u4e00\u4e2a\u5b57\u7b26\u4e32\u67e5\u8be2\uff08\u7528\u6237\u7684\u63d0\u95ee\uff09\uff0c\u8fd4\u56de\u4e00\u4e2a <code>Document<\/code> \u5bf9\u8c61\u7684\u5217\u8868\u3002<\/p>\n\n\n\n<p>\ud83d\udca1 \u6240\u4ee5\uff0c\u81ea\u5b9a\u4e49\u4e00\u4e2a\u68c0\u7d22\u5668\uff0c\u672c\u8d28\u4e0a\u5c31\u662f\u5199\u4e00\u6bb5\u4f60\u81ea\u5df1\u7684\u903b\u8f91\uff0c\u53bb\u4f60\u6307\u5b9a\u7684\u4efb\u4f55\u5730\u65b9\uff0c\u6839\u636e\u4e00\u4e2a\u67e5\u8be2\u5b57\u7b26\u4e32\uff0c\u62ff\u5230\u4e00\u4e9b\u76f8\u5173\u7684\u6587\u672c\uff0c\u7136\u540e\u628a\u8fd9\u4e9b\u6587\u672c\u5305\u88c5\u6210 LangChain \u8ba4\u8bc6\u7684 <code>Document<\/code> \u683c\u5f0f\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\ud83d\udd39\u5b9e\u6218\u573a\u666f\uff1a\u521b\u5efa\u4e00\u4e2a\u4ece SQL \u6570\u636e\u5e93\u68c0\u7d22\u516c\u53f8\u65b0\u95fb\u7684\u68c0\u7d22\u5668<\/strong><\/p>\n\n\n\n<p>\u5047\u8bbe\u516c\u53f8\u6240\u6709\u7684\u65b0\u95fb\u7a3f\u90fd\u5b58\u5728\u4e00\u4e2a SQL \u6570\u636e\u5e93\u7684 <code>news<\/code> \u8868\u4e2d\uff0c\u5305\u542b <code>id<\/code>\uff0c<code>title<\/code>\uff0c<code>content<\/code>\uff0c<code>publish_date<\/code> \u7b49\u5b57\u6bb5\u3002\u6211\u4eec\u5e0c\u671b AI \u80fd\u76f4\u63a5\u5728\u8fd9\u4e2a\u8868\u91cc\u641c\u7d22\u65b0\u95fb\u3002<\/p>\n\n\n\n<p><strong>\u7b2c\u4e00\u6b65\uff1a\u51c6\u5907\u6570\u636e\u6e90\uff08\u6a21\u62df SQL \u6570\u636e\u5e93\uff09<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import sqlite3\n\n# \u521b\u5efa\u4e00\u4e2a\u5185\u5b58\u4e2d\u7684SQLite\u6570\u636e\u5e93\u7528\u4e8e\u6f14\u793a\nconn = sqlite3.connect(\":memory:\", check_same_thread=False)\ncursor = conn.cursor()\n\n# \u521b\u5efa\u8868\ncursor.execute(\"\"\"\nCREATE TABLE news (\n    id INTEGER PRIMARY KEY,\n    title TEXT NOT NULL,\n    content TEXT NOT NULL,\n    publish_date TEXT NOT NULL\n)\n\"\"\")\nconn.commit()\n\nontent TEXT NOT NULL,\npublish_date TEXT NOT NULL\n)\n\"\"\")\n\n# \u63d2\u5165\u4e00\u4e9b\u5047\u6570\u636e\nnews_data = [\n    (1, \"\u516c\u53f8\u53d1\u5e03AI\u6218\u7565\", \"\u5728\u4eca\u5929\u7684\u53d1\u5e03\u4f1a\u4e0a\uff0cCEO\u5f20\u4e09\u5ba3\u5e03\u4e86\u516c\u53f8\u5168\u9762\u7684AI\u6218\u7565...\", \"2024-05-10\"),\n    (2, \"\u65b0\u4ea7\u54c1'\u51e4\u51f0'\u53d1\u5e03\", \"\u5907\u53d7\u671f\u5f85\u7684\u65b0\u4ea7\u54c1'\u51e4\u51f0'\u4eca\u65e5\u6b63\u5f0f\u53d1\u5e03\uff0c\u5b83\u96c6\u6210\u4e86\u4e1a\u754c\u9886\u5148\u7684AI\u80fd\u529b...\", \"2024-05-20\"),\n    (3, \"\u5b63\u5ea6\u8d22\u62a5\u8868\u73b0\u5f3a\u52b2\", \"\u516c\u53f8\u516c\u5e03\u4e86\u7b2c\u4e00\u5b63\u5ea6\u8d22\u62a5\uff0c\u8425\u6536\u540c\u6bd4\u589e\u957f20%...\", \"2024-04-28\"),\n]\ncursor.executemany(\"INSERT INTO news VALUES (?, ?, ?, ?)\", news_data)\nconn.commit()<\/pre>\n\n\n\n<p><strong>\u7b2c\u4e8c\u6b65\uff1a\u521b\u5efa\u81ea\u5b9a\u4e49\u68c0\u7d22\u5668\u7c7b<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import sqlite3\nfrom typing import List\nfrom langchain_core.retrievers import BaseRetriever\nfrom langchain_core.callbacks import CallbackManagerForRetrieverRun\nfrom langchain_core.documents import Document\n\n\nclass SqlNewsRetriever(BaseRetriever):\n    \"\"\"\n    \u81ea\u5b9a\u4e49SQL\u65b0\u95fb\u68c0\u7d22\u5668\n    \u4eceSQLite\u6570\u636e\u5e93\u7684news\u8868\u4e2d\u68c0\u7d22\u4e0e\u67e5\u8be2\u76f8\u5173\u7684\u65b0\u95fb\u5185\u5bb9\uff0c\u5e76\u5c01\u88c5\u4e3aLangChain\u7684Document\u5bf9\u8c61\n    \"\"\"\n    conn: sqlite3.Connection  # \u63a5\u6536\u4e00\u4e2a\u6570\u636e\u5e93\u8fde\u63a5\u4f5c\u4e3a\u53c2\u6570\n\n    def _get_relevant_documents(\n        self, query: str, *, run_manager: CallbackManagerForRetrieverRun\n    ) -> List[Document]:\n        \"\"\"\n        \u81ea\u5b9a\u4e49\u7684\u6838\u5fc3\u68c0\u7d22\u903b\u8f91\n        :param query: \u7528\u6237\u7684\u67e5\u8be2\u5b57\u7b26\u4e32\n        :param run_manager: \u56de\u8c03\u7ba1\u7406\u5668\uff08LangChain\u5185\u7f6e\u53c2\u6570\uff09\n        :return: \u5c01\u88c5\u540e\u7684Document\u5bf9\u8c61\u5217\u8868\n        \"\"\"\n        print(f\"--- \u6b63\u5728\u7528SQL\u68c0\u7d22\u4e0e '{query}' \u76f8\u5173\u7684\u65b0\u95fb ---\")\n        cursor = self.conn.cursor()\n\n        # \u7b80\u5355\u7684\u6a21\u7cca\u5339\u914d\u68c0\u7d22\u903b\u8f91\uff08\u5b9e\u9645\u573a\u666f\u53ef\u66ff\u6362\u4e3a\u66f4\u590d\u6742\u7684\u68c0\u7d22\u7b56\u7565\uff09\n        # \u6bd4\u5982\u7ed3\u5408LLM\u5c06\u81ea\u7136\u8bed\u8a00query\u8f6c\u4e3a\u7cbe\u51c6SQL\uff0c\u6216\u63a5\u5165\u5168\u6587\u641c\u7d22\u5f15\u64ce\n        sql_query = \"SELECT * FROM news WHERE title LIKE ? OR content LIKE ?\"\n        like_query = f\"%{query}%\"\n\n        cursor.execute(sql_query, (like_query, like_query))\n        rows = cursor.fetchall()\n\n        # \u5c06SQL\u67e5\u8be2\u7ed3\u679c\u5305\u88c5\u6210LangChain\u7684Document\u5bf9\u8c61\u5217\u8868\n        documents = []\n        for row in rows:\n            # row \u7ed3\u6784: (id, title, content, publish_date)\n            doc = Document(\n                page_content=f\"\u6807\u9898: {row[1]}\\n\u5185\u5bb9: {row[2]}\",\n                metadata={\n                    \"source\": \"Internal News DB\",  # \u6807\u8bb0\u6570\u636e\u6765\u6e90\n                    \"news_id\": row[0],             # \u65b0\u95fbID\n                    \"publish_date\": row[3]         # \u53d1\u5e03\u65e5\u671f\n                }\n            )\n            documents.append(doc)\n\n        return documents<\/pre>\n\n\n\n<p>\ud83d\udca1 <strong>\u4ea7\u54c1\u540c\u5b66\u8bf7\u6ce8\u610f\uff1a<\/strong><code>_get_relevant_documents<\/code> \u8fd9\u4e2a\u65b9\u6cd5\u91cc\u7684\u903b\u8f91\uff0c\u5c31\u662f\u4f60\u548c\u6570\u636e\u5de5\u7a0b\u5e08\u9700\u8981\u4e00\u8d77\u8bbe\u8ba1\u7684 \u201c\u9ed1\u76d2\u5b50\u201d\u3002\u800c <code>Document<\/code> \u7684\u521b\u5efa\u8fc7\u7a0b\uff0c\u5c24\u5176\u662f <code>metadata<\/code> \u7684\u586b\u5145\uff0c\u662f\u4f60\u9700\u8981\u5173\u6ce8\u7684\u3002\u4e30\u5bcc\u7684\u5143\u6570\u636e\uff0c\u80fd\u4e3a\u540e\u7eed\u7684 RAG \u6d41\u7a0b\u63d0\u4f9b\u5b9d\u8d35\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f\u3002<\/p>\n\n\n\n<p><strong>\u7b2c\u4e09\u6b65\uff1a\u5728 RAG \u94fe\u4e2d\u4f7f\u7528\u81ea\u5b9a\u4e49\u68c0\u7d22\u5668<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">from langchain.chains import RetrievalQA\n\n# 1. \u5b9e\u4f8b\u5316\u6211\u4eec\u7684\u81ea\u5b9a\u4e49\u68c0\u7d22\u5668\nsql_retriever = SqlNewsRetriever(conn=conn)\n\n# 2. \u50cf\u4f7f\u7528\u4efb\u4f55\u5176\u4ed6\u68c0\u7d22\u5668\u4e00\u6837\uff0c\u628a\u5b83\u7528\u5728RAG\u94fe\u91cc\nqa_chain = RetrievalQA.from_chain_type(\n    llm=ChatOpenAI(model=\"gpt-4o\"),\n    chain_type=\"stuff\",\n    retriever=sql_retriever\n)\n\n# 3. \u5f00\u59cb\u63d0\u95ee!\nresponse = qa_chain.invoke(\"\u5173\u4e8e\u516c\u53f8AI\u6218\u7565\u7684\u65b0\u95fb\u8bb2\u4e86\u4e9b\u4ec0\u4e48?\")\nprint(response[\"result\"])\n\n# \u5185\u90e8\u6d41\u7a0b:\n# 1. \"\u516c\u53f8AI\u6218\u7565\" \u8fd9\u4e2a\u67e5\u8be2\u88ab\u4f20\u5165 SqlNewsRetriever\u3002\n# 2. `_get_relevant_documents` \u88ab\u89e6\u53d1\uff0c\u6267\u884cSQL\u67e5\u8be2\uff0c\u627e\u5230ID\u4e3a1\u7684\u65b0\u95fb\u3002\n# 3. \u8be5\u65b0\u95fb\u88ab\u5305\u88c5\u6210\u4e00\u4e2aDocument\u5bf9\u8c61\u3002\n# 4. \u8fd9\u4e2aDocument\u5bf9\u8c61\u548c\u95ee\u9898\u4e00\u8d77\u88ab\u9001\u7ed9LLM\u3002\n# 5. LLM\u6839\u636e\u65b0\u95fb\u5185\u5bb9\uff0c\u603b\u7ed3\u5e76\u56de\u7b54\u4e86\u95ee\u9898\u3002<\/pre>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u56db\u3001\u8fdb\u9636\uff1a\u8ba9\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u534f\u540c\u5de5\u4f5c<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u62e5\u6709\u4e86\u81ea\u5b9a\u4e49\u7684\u5de5\u5177\u548c\u81ea\u5b9a\u4e49\u7684\u68c0\u7d22\u5668\u3002\u771f\u6b63\u7684\u5a01\u529b\u5728\u4e8e\u5c06\u5b83\u4eec\u7ec4\u5408\u8d77\u6765\uff0c\u653e\u5165\u6211\u4eec\u4e4b\u524d\u8ba8\u8bba\u8fc7\u7684\u9ad8\u7ea7 Agent \u6216\u8def\u7531\u67b6\u6784\u4e2d\u3002<\/p>\n\n\n\n<p>\u60f3\u8c61\u4e00\u4e2a CEO \u7684 AI \u4f5c\u6218\u5ba4\u3002CEO \u53ef\u4ee5\u63d0\u51fa\u4e00\u4e2a\u975e\u5e38\u5f00\u653e\u7684\u95ee\u9898\uff1a<\/p>\n\n\n\n<ul>\n<li>\u6211\u4eec\u7684\u65b0\u4ea7\u54c1\u53d1\u5e03\u540e\uff0c\u5e02\u573a\u53cd\u5e94\u600e\u4e48\u6837\uff1f<\/li>\n\n\n\n<li>\u53e6\u5916\uff0c\u5e2e\u6211\u770b\u770b\u9500\u552e\u56e2\u961f\u7684\u8d1f\u8d23\u4eba\u674e\u56db\u7684\u8054\u7cfb\u65b9\u5f0f\uff0c\u6211\u8981\u9a6c\u4e0a\u8054\u7cfb\u4ed6\u4e86\u89e3\u4e00\u7ebf\u60c5\u51b5\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e00\u4e2a\u96c6\u6210\u4e86\u6211\u4eec\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u7684\u7ec8\u6781 Agent \u4f1a\u8fd9\u6837\u5de5\u4f5c\uff1a<\/p>\n\n\n\n<ol>\n<li><strong>[Agent \u601d\u8003]<\/strong>\uff1a\u8fd9\u4e2a\u95ee\u9898\u5305\u542b\u4e24\u4e2a\u90e8\u5206\u3002\u7b2c\u4e00\u90e8\u5206\u662f\u5e02\u573a\u53cd\u5e94\uff0c\u8fd9\u9700\u8981\u67e5\u8be2\u77e5\u8bc6\u3002\u7b2c\u4e8c\u90e8\u5206\u662f\u627e \u201c\u674e\u56db\u201d \u7684\u8054\u7cfb\u65b9\u5f0f\uff0c\u8fd9\u9700\u8981\u4e00\u4e2a\u884c\u52a8\u5de5\u5177\u3002<\/li>\n\n\n\n<li><strong>[Agent \u8c03\u7528\u68c0\u7d22\u5de5\u5177]<\/strong>\uff1aAgent \u77e5\u9053\u5b83\u6709\u4e00\u4e2a\u53ef\u4ee5\u68c0\u7d22\u65b0\u95fb\u7684\u5de5\u5177\uff08\u8fd9\u4e2a\u5de5\u5177\u5c31\u662f\u628a\u6211\u4eec\u7684 <code>SqlNewsRetriever<\/code> \u5305\u88c5\u4e86\u4e00\u4e0b\uff09\u3002\u5b83\u8c03\u7528\u8fd9\u4e2a\u5de5\u5177\uff0c\u641c\u7d22 \u201c\u5e02\u573a\u53cd\u5e94\u201d\u3002<\/li>\n\n\n\n<li><strong>[\u81ea\u5b9a\u4e49\u68c0\u7d22\u5668\u5de5\u4f5c]<\/strong>\uff1a<code>SqlNewsRetriever<\/code> \u6267\u884c SQL \u67e5\u8be2\uff0c\u627e\u5230\u4e86\u53d1\u5e03\u7684\u65b0\u95fb\u7a3f\uff0c\u5e76\u4f5c\u4e3a\u4e0a\u4e0b\u6587\u8fd4\u56de\u3002<\/li>\n\n\n\n<li><strong>[Agent \u8c03\u7528\u884c\u52a8\u5de5\u5177]<\/strong>\uff1aAgent \u63a5\u7740\u5904\u7406\u7b2c\u4e8c\u90e8\u5206\u3002\u5b83\u770b\u5230 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