{"id":183908,"date":"2024-11-10T08:44:18","date_gmt":"2024-11-10T00:44:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183908\/"},"modified":"2024-11-10T08:44:19","modified_gmt":"2024-11-10T00:44:19","slug":"%e4%bd%bf%e7%94%a8oracle%e9%81%9e%e6%ad%b8%e6%9f%a5%e8%a9%a2%e8%99%95%e7%90%86%e7%88%b6%e5%ad%90%e9%97%9c%e4%bf%82%e8%a8%98%e9%8c%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183908\/","title":{"rendered":"\u4f7f\u7528oracle\u905e\u6b78\u67e5\u8a62\u8655\u7406\u7236\u5b50\u95dc\u4fc2\u8a18\u9304"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8oracle%e9%81%9e%e6%ad%b8%e6%9f%a5%e8%a9%a2%e8%99%95%e7%90%86%e7%88%b6%e5%ad%90%e9%97%9c%e4%bf%82%e8%a8%98%e9%8c%84-xcmKJamQdS\">\u4f7f\u7528Oracle\u905e\u6b78\u67e5\u8a62\u8655\u7406\u7236\u5b50\u95dc\u4fc2\u8a18\u9304<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u7236\u5b50\u95dc\u4fc2\u8a18\u9304\u7684\u8655\u7406\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u9019\u7a2e\u95dc\u4fc2\u901a\u5e38\u51fa\u73fe\u5728\u7d44\u7e54\u7d50\u69cb\u3001\u7522\u54c1\u5206\u985e\u3001\u6587\u4ef6\u7cfb\u7d71\u7b49\u5834\u666f\u4e2d\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u905e\u6b78\u67e5\u8a62\u529f\u80fd\uff0c\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u8f15\u9b06\u5730\u67e5\u8a62\u9019\u4e9b\u5c64\u6b21\u7d50\u69cb\u7684\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Oracle\u7684\u905e\u6b78\u67e5\u8a62\u4f86\u8655\u7406\u7236\u5b50\u95dc\u4fc2\u8a18\u9304\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%e9%81%9e%e6%ad%b8%e6%9f%a5%e8%a9%a2%ef%bc%9f-xcmKJamQdS\">\u4ec0\u9ebc\u662f\u905e\u6b78\u67e5\u8a62\uff1f<\/h2>\n<p>\u905e\u6b78\u67e5\u8a62\u662f\u4e00\u7a2e\u67e5\u8a62\u65b9\u5f0f\uff0c\u5141\u8a31\u7528\u6236\u5728SQL\u8a9e\u53e5\u4e2d\u81ea\u6211\u5f15\u7528\uff0c\u4ee5\u4fbf\u5f9e\u4e00\u500b\u5c64\u6b21\u7d50\u69cb\u4e2d\u63d0\u53d6\u6578\u64da\u3002\u5728Oracle\u4e2d\uff0c\u905e\u6b78\u67e5\u8a62\u901a\u5e38\u4f7f\u7528CTE\uff08\u516c\u7528\u8868\u8868\u9054\u5f0f\uff09\u4f86\u5be6\u73fe\u3002\u9019\u7a2e\u67e5\u8a62\u65b9\u5f0f\u7279\u5225\u9069\u5408\u8655\u7406\u6a39\u72c0\u7d50\u69cb\u7684\u6578\u64da\uff0c\u4f8b\u5982\u7d44\u7e54\u67b6\u69cb\u5716\u6216\u7522\u54c1\u5206\u985e\u3002<\/p>\n<h2 id=\"oracle%e9%81%9e%e6%ad%b8%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-xcmKJamQdS\">Oracle\u905e\u6b78\u67e5\u8a62\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u905e\u6b78\u67e5\u8a62\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>\nWITH RECURSIVE cte_name AS (\n    SELECT column1, column2, ...\n    FROM table_name\n    WHERE condition\n    UNION ALL\n    SELECT column1, column2, ...\n    FROM table_name\n    JOIN cte_name ON table_name.parent_id = cte_name.id\n)\nSELECT * FROM cte_name;\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c<code>cte_name<\/code>\u662f\u516c\u7528\u8868\u8868\u9054\u5f0f\u7684\u540d\u7a31\uff0c<code>parent_id<\/code>\u662f\u7236\u7bc0\u9ede\u7684ID\uff0c<code>id<\/code>\u662f\u7576\u524d\u7bc0\u9ede\u7684ID\u3002\u9019\u6a23\u7684\u7d50\u69cb\u5141\u8a31\u67e5\u8a62\u5f9e\u6839\u7bc0\u9ede\u958b\u59cb\uff0c\u9010\u5c64\u5411\u4e0b\u67e5\u8a62\u6240\u6709\u5b50\u7bc0\u9ede\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e6%9f%a5%e8%a9%a2%e7%b5%84%e7%b9%94%e7%b5%90%e6%a7%8b-xcmKJamQdS\">\u793a\u4f8b\uff1a\u67e5\u8a62\u7d44\u7e54\u7d50\u69cb<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u8868\uff0c\u8a72\u8868\u5305\u542b\u54e1\u5de5\u7684ID\u3001\u59d3\u540d\u548c\u4e0a\u7d1aID\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528\u905e\u6b78\u67e5\u8a62\u4f86\u7372\u53d6\u67d0\u500b\u54e1\u5de5\u53ca\u5176\u6240\u6709\u4e0b\u5c6c\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nWITH RECURSIVE employee_hierarchy AS (\n    SELECT employee_id, employee_name, manager_id\n    FROM employees\n    WHERE employee_id = :id  -- \u6307\u5b9a\u6839\u7bc0\u9ede\u7684ID\n    UNION ALL\n    SELECT e.employee_id, e.employee_name, e.manager_id\n    FROM employees e\n    JOIN employee_hierarchy eh ON e.manager_id = eh.employee_id\n)\nSELECT * FROM employee_hierarchy;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c<code>:id<\/code>\u662f\u6211\u5011\u60f3\u8981\u67e5\u8a62\u7684\u54e1\u5de5\u7684ID\u3002\u67e5\u8a62\u5c07\u8fd4\u56de\u8a72\u54e1\u5de5\u53ca\u5176\u6240\u6709\u4e0b\u5c6c\u7684\u5b8c\u6574\u5c64\u6b21\u7d50\u69cb\u3002<\/p>\n<h2 id=\"%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-xcmKJamQdS\">\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u96d6\u7136\u905e\u6b78\u67e5\u8a62\u975e\u5e38\u5f37\u5927\uff0c\u4f46\u5728\u8655\u7406\u5927\u578b\u6578\u64da\u96c6\u6642\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u6210\u70ba\u4e00\u500b\u554f\u984c\u3002\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u5728\u7236\u5b50\u95dc\u4fc2\u7684\u95dc\u9375\u5b57\u6bb5\u4e0a\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u9650\u5236\u67e5\u8a62\u7684\u5c64\u6b21\u6df1\u5ea6\uff0c\u907f\u514d\u7121\u9650\u905e\u6b78\u3002<\/li>\n<li>\u4f7f\u7528<code>CONNECT BY<\/code>\u8a9e\u6cd5\u9032\u884c\u5c64\u6b21\u67e5\u8a62\uff0c\u9019\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u66f4\u9ad8\u6548\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-xcmKJamQdS\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528Oracle\u7684\u905e\u6b78\u67e5\u8a62\u4f86\u8655\u7406\u7236\u5b50\u95dc\u4fc2\u8a18\u9304\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u9748\u6d3b\u7684\u65b9\u6cd5\u3002\u901a\u904e\u6b63\u78ba\u7684\u8a9e\u6cd5\u548c\u7d50\u69cb\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u7372\u53d6\u5c64\u6b21\u7d50\u69cb\u4e2d\u7684\u6578\u64da\uff0c\u4e26\u9032\u884c\u9032\u4e00\u6b65\u7684\u5206\u6790\u548c\u8655\u7406\u3002\u7121\u8ad6\u662f\u5728\u7d44\u7e54\u7d50\u69cb\u9084\u662f\u5176\u4ed6\u985e\u578b\u7684\u6578\u64da\u4e2d\uff0c\u638c\u63e1\u9019\u4e00\u6280\u8853\u90fd\u5c07\u5927\u5927\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u96f2\u7aef\u74b0\u5883\u4e2d\u90e8\u7f72\u548c\u7ba1\u7406\u9019\u4e9b\u6578\u64da\u6709\u8208\u8da3\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528Oracle\u905e\u6b78\u67e5\u8a62\u9ad8\u6548\u8655\u7406\u7236\u5b50\u95dc\u4fc2\u8a18\u9304\uff0c\u8f15\u9b06\u7ba1\u7406\u5c64\u7d1a\u7d50\u69cb\u6578\u64da\uff0c\u63d0\u5347\u67e5\u8a62\u6027\u80fd\u8207\u9748\u6d3b\u6027\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-183908","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183908","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=183908"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183908\/revisions"}],"predecessor-version":[{"id":183909,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183908\/revisions\/183909"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183908"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}