{"id":179566,"date":"2024-11-09T02:53:18","date_gmt":"2024-11-08T18:53:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179566\/"},"modified":"2024-11-09T02:53:19","modified_gmt":"2024-11-08T18:53:19","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-db2-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%89%b5%e5%bb%ba%e8%b7%af%e5%be%91-db2-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%89%b5%e5%bb%ba%e8%b7%af%e5%be%91","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179566\/","title":{"rendered":"\u5982\u4f55\u5728 db2 \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8def\u5f91 (db2 \u6578\u64da\u5eab\u5275\u5efa\u8def\u5f91)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8-db2-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%89%b5%e5%bb%ba%e8%b7%af%e5%be%91-SaTNPXSSvK\">\u5982\u4f55\u5728 DB2 \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8def\u5f91<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u8def\u5f91\u7684\u5275\u5efa\u662f\u4e00\u500b\u91cd\u8981\u7684\u6b65\u9a5f\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u8907\u96dc\u7684\u6578\u64da\u7d50\u69cb\u6642\u3002DB2 \u6578\u64da\u5eab\u4f5c\u70ba IBM \u7684\u4e00\u6b3e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u529f\u80fd\u4f86\u652f\u6301\u6578\u64da\u7684\u5b58\u5132\u548c\u6aa2\u7d22\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 DB2 \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8def\u5f91\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%b7%af%e5%be%91%ef%bc%9f-SaTNPXSSvK\">\u4ec0\u9ebc\u662f\u8def\u5f91\uff1f<\/h2>\n<p>\u5728 DB2 \u4e2d\uff0c\u8def\u5f91\u901a\u5e38\u6307\u7684\u662f\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u7528\u65bc\u8868\u793a\u6578\u64da\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u9019\u4e9b\u8def\u5f91\u53ef\u4ee5\u7528\u65bc\u67e5\u8a62\u3001\u6578\u64da\u5206\u6790\u4ee5\u53ca\u6578\u64da\u6316\u6398\u7b49\u591a\u7a2e\u7528\u9014\u3002\u8def\u5f91\u7684\u5275\u5efa\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u7d44\u7e54\u548c\u6aa2\u7d22\u6578\u64da\u3002<\/p>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e8%b7%af%e5%be%91%e7%9a%84%e6%ad%a5%e9%a9%9f-SaTNPXSSvK\">\u5275\u5efa\u8def\u5f91\u7684\u6b65\u9a5f<\/h2>\n<p>\u5728 DB2 \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8def\u5f91\u7684\u904e\u7a0b\u53ef\u4ee5\u5206\u70ba\u5e7e\u500b\u4e3b\u8981\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%ae%9a%e7%be%a9%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b-SaTNPXSSvK\">1. \u5b9a\u7fa9\u6578\u64da\u7d50\u69cb<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5b9a\u7fa9\u8981\u5b58\u5132\u7684\u6578\u64da\u7d50\u69cb\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u5275\u5efa\u8868\u683c\u548c\u5b57\u6bb5\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u8981\u5275\u5efa\u4e00\u500b\u7528\u65bc\u5b58\u5132\u54e1\u5de5\u4fe1\u606f\u7684\u8868\u683c\uff1a<\/p>\n<pre><code>CREATE TABLE Employees (\n    EmployeeID INT PRIMARY KEY,\n    Name VARCHAR(100),\n    ManagerID INT\n);<\/code><\/pre>\n<h3 id=\"2-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-SaTNPXSSvK\">2. \u63d2\u5165\u6578\u64da<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u5411\u8868\u683c\u4e2d\u63d2\u5165\u6578\u64da\u3002\u9019\u4e9b\u6578\u64da\u5c07\u7528\u65bc\u5efa\u7acb\u8def\u5f91\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>INSERT INTO Employees (EmployeeID, Name, ManagerID) VALUES (1, 'Alice', NULL);\nINSERT INTO Employees (EmployeeID, Name, ManagerID) VALUES (2, 'Bob', 1);\nINSERT INTO Employees (EmployeeID, Name, ManagerID) VALUES (3, 'Charlie', 1);\nINSERT INTO Employees (EmployeeID, Name, ManagerID) VALUES (4, 'David', 2);<\/code><\/pre>\n<h3 id=\"3-%e5%89%b5%e5%bb%ba%e8%b7%af%e5%be%91-SaTNPXSSvK\">3. \u5275\u5efa\u8def\u5f91<\/h3>\n<p>\u5728\u63d2\u5165\u6578\u64da\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 SQL \u67e5\u8a62\u4f86\u5275\u5efa\u8def\u5f91\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u67e5\u8a62\uff0c\u7528\u65bc\u67e5\u627e\u67d0\u500b\u54e1\u5de5\u7684\u6240\u6709\u4e0b\u5c6c\uff1a<\/p>\n<pre><code>WITH RECURSIVE EmployeePath AS (\n    SELECT EmployeeID, Name, ManagerID\n    FROM Employees\n    WHERE EmployeeID = 1  -- \u5047\u8a2d\u6211\u5011\u8981\u67e5\u627e Alice \u7684\u4e0b\u5c6c\n    UNION ALL\n    SELECT e.EmployeeID, e.Name, e.ManagerID\n    FROM Employees e\n    INNER JOIN EmployeePath ep ON e.ManagerID = ep.EmployeeID\n)\nSELECT * FROM EmployeePath;<\/code><\/pre>\n<p>\u9019\u6bb5\u67e5\u8a62\u4f7f\u7528\u4e86\u905e\u6b78\u516c\u7528\u8868\u8868\u9054\u5f0f\uff08CTE\uff09\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u67e5\u627e\u6240\u6709\u5c64\u7d1a\u7684\u4e0b\u5c6c\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-SaTNPXSSvK\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u5275\u5efa\u8def\u5f91\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u907f\u514d\u5faa\u74b0\u5f15\u7528\u3002<\/li>\n<li>\u6839\u64da\u5be6\u969b\u9700\u6c42\u8a2d\u8a08\u6578\u64da\u7d50\u69cb\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<li>\u6e2c\u8a66\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u6578\u64da\u91cf\u8f03\u5927\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SaTNPXSSvK\">\u7e3d\u7d50<\/h2>\n<p>\u5728 DB2 \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8def\u5f91\u662f\u4e00\u500b\u91cd\u8981\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u5230\u6578\u64da\u7d50\u69cb\u7684\u8a2d\u8a08\u3001\u6578\u64da\u7684\u63d2\u5165\u4ee5\u53ca\u67e5\u8a62\u7684\u7de8\u5beb\u3002\u901a\u904e\u4f7f\u7528\u905e\u6b78\u67e5\u8a62\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u6aa2\u7d22\u6578\u64da\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 DB2 \u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8def\u5f91\uff0c\u638c\u63e1\u6b65\u9a5f\u8207\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-179566","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179566","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=179566"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179566\/revisions"}],"predecessor-version":[{"id":179567,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179566\/revisions\/179567"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}