{"id":95398,"date":"2024-10-20T00:43:19","date_gmt":"2024-10-19T16:43:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95398\/"},"modified":"2024-10-20T00:43:20","modified_gmt":"2024-10-19T16:43:20","slug":"oracle%e6%a8%b9%e7%9a%84%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e7%9a%84%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c4%e6%ad%a5%e9%a9%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95398\/","title":{"rendered":"Oracle\u6a39\u7684\u5b58\u5132\u904e\u7a0b\u7684\u5be6\u969b\u64cd\u4f5c4\u6b65\u9a5f"},"content":{"rendered":"

Oracle\u6a39\u7684\u5b58\u5132\u904e\u7a0b\u7684\u5be6\u969b\u64cd\u4f5c4\u6b65\u9a5f<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cOracle\u6a39\u7d50\u69cb\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u6578\u64da\u7d44\u7e54\u65b9\u5f0f\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5c64\u6b21\u7d50\u69cb\u6578\u64da\u6642\u3002\u5b58\u5132\u904e\u7a0b\u662fOracle\u6578\u64da\u5eab\u4e2d\u4e00\u7a2e\u91cd\u8981\u7684\u7de8\u7a0b\u7d50\u69cb\uff0c\u80fd\u5920\u5c01\u88ddSQL\u8a9e\u53e5\u548c\u908f\u8f2f\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u64cd\u4f5c\u7684\u6548\u7387\u548c\u53ef\u91cd\u7528\u6027\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728Oracle\u4e2d\u5be6\u73fe\u6a39\u7684\u5b58\u5132\u904e\u7a0b\uff0c\u4e26\u63d0\u4f9b\u56db\u500b\u5be6\u969b\u64cd\u4f5c\u6b65\u9a5f\u3002<\/p>\n

\u6b65\u9a5f\u4e00\uff1a\u5275\u5efa\u6a39\u7d50\u69cb\u7684\u6578\u64da\u8868<\/h2>\n

\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u6578\u64da\u8868\u4f86\u5b58\u5132\u6a39\u7d50\u69cb\u7684\u6578\u64da\u3002\u9019\u500b\u8868\u901a\u5e38\u5305\u542b\u4e00\u500b\u4e3b\u9375\u548c\u4e00\u500b\u6307\u5411\u7236\u7bc0\u9ede\u7684\u5916\u9375\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8bSQL\u8a9e\u53e5\uff0c\u7528\u65bc\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201ctree_nodes\u201d\u7684\u8868\uff1a<\/p>\n

\nCREATE TABLE tree_nodes (\n    id NUMBER PRIMARY KEY,\n    parent_id NUMBER,\n    name VARCHAR2(100),\n    FOREIGN KEY (parent_id) REFERENCES tree_nodes(id)\n);\n<\/code><\/pre>\n
\u5728\u9019\u500b\u8868\u4e2d\uff0cid<\/code>\u662f\u6bcf\u500b\u7bc0\u9ede\u7684\u552f\u4e00\u6a19\u8b58\u7b26\uff0cparent_id<\/code>\u7528\u65bc\u6307\u5411\u5176\u7236\u7bc0\u9ede\uff0c\u800cname<\/code>\u5247\u662f\u7bc0\u9ede\u7684\u540d\u7a31\u3002<\/p>\n
\u6b65\u9a5f\u4e8c\uff1a\u63d2\u5165\u6a39\u7d50\u69cb\u6578\u64da<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5411\u8868\u4e2d\u63d2\u5165\u6578\u64da\uff0c\u4ee5\u5efa\u7acb\u6a39\u7684\u7d50\u69cb\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u63d2\u5165\u6578\u64da\uff1a<\/p>\n
\nINSERT INTO tree_nodes (id, parent_id, name) VALUES (1, NULL, '\u6839\u7bc0\u9ede');\nINSERT INTO tree_nodes (id, parent_id, name) VALUES (2, 1, '\u5b50\u7bc0\u9ede1');\nINSERT INTO tree_nodes (id, parent_id, name) VALUES (3, 1, '\u5b50\u7bc0\u9ede2');\nINSERT INTO tree_nodes (id, parent_id, name) VALUES (4, 2, '\u5b50\u7bc0\u9ede1.1');\n<\/code><\/pre>\n
\u9019\u4e9b\u8a9e\u53e5\u5c07\u5275\u5efa\u4e00\u500b\u7c21\u55ae\u7684\u6a39\u7d50\u69cb\uff0c\u5176\u4e2d\u201c\u6839\u7bc0\u9ede\u201d\u662f\u6a39\u7684\u6839\uff0c\u4e26\u4e14\u6709\u5169\u500b\u5b50\u7bc0\u9ede\u548c\u4e00\u500b\u5b50\u7bc0\u9ede\u7684\u5b50\u7bc0\u9ede\u3002<\/p>\n
\u6b65\u9a5f\u4e09\uff1a\u5275\u5efa\u5b58\u5132\u904e\u7a0b<\/h2>\n
\u5728\u63d2\u5165\u6578\u64da\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u5275\u5efa\u4e00\u500b\u5b58\u5132\u904e\u7a0b\u4f86\u67e5\u8a62\u6a39\u7d50\u69cb\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u5b58\u5132\u904e\u7a0b\uff0c\u7528\u65bc\u67e5\u8a62\u67d0\u500b\u7bc0\u9ede\u7684\u6240\u6709\u5b50\u7bc0\u9ede\uff1a<\/p>\n
\nCREATE OR REPLACE PROCEDURE get_children(p_id IN NUMBER) IS\nBEGIN\n    FOR rec IN (SELECT * FROM tree_nodes WHERE parent_id = p_id) LOOP\n        DBMS_OUTPUT.PUT_LINE('\u7bc0\u9edeID: ' || rec.id || ', \u540d\u7a31: ' || rec.name);\n        get_children(rec.id); -- \u905e\u6b78\u8abf\u7528\n    END LOOP;\nEND;\n<\/code><\/pre>\n
\u9019\u500b\u5b58\u5132\u904e\u7a0b\u4f7f\u7528\u905e\u6b78\u65b9\u6cd5\u4f86\u67e5\u8a62\u6240\u6709\u5b50\u7bc0\u9ede\uff0c\u4e26\u901a\u904eDBMS_OUTPUT.PUT_LINE<\/code>\u8f38\u51fa\u7bc0\u9ede\u7684ID\u548c\u540d\u7a31\u3002<\/p>\n
\u6b65\u9a5f\u56db\uff1a\u57f7\u884c\u5b58\u5132\u904e\u7a0b<\/h2>\n
\u6700\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u57f7\u884c\u9019\u500b\u5b58\u5132\u904e\u7a0b\u4f86\u67e5\u770b\u6a39\u7684\u7d50\u69cb\u3002\u5047\u8a2d\u6211\u5011\u60f3\u67e5\u8a62\u6839\u7bc0\u9ede\u7684\u6240\u6709\u5b50\u7bc0\u9ede\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
\nBEGIN\n    get_children(1);\nEND;\n<\/code><\/pre>\n
\u57f7\u884c\u5f8c\uff0c\u5c07\u6703\u986f\u793a\u6839\u7bc0\u9ede\u4e0b\u7684\u6240\u6709\u5b50\u7bc0\u9ede\u53ca\u5176\u5b50\u7bc0\u9ede\uff0c\u5f9e\u800c\u5b8c\u6574\u5730\u5c55\u793a\u6a39\u7684\u7d50\u69cb\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u901a\u904e\u4ee5\u4e0a\u56db\u500b\u6b65\u9a5f\uff0c\u6211\u5011\u6210\u529f\u5730\u5728Oracle\u4e2d\u5275\u5efa\u4e86\u4e00\u500b\u6a39\u7d50\u69cb\u7684\u5b58\u5132\u904e\u7a0b\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u64cd\u4f5c\u7684\u6548\u7387\uff0c\u9084\u4f7f\u5f97\u6578\u64da\u7684\u7ba1\u7406\u66f4\u52a0\u9748\u6d3b\u3002\u5c0d\u65bc\u9700\u8981\u8655\u7406\u5c64\u6b21\u7d50\u69cb\u6578\u64da\u7684\u61c9\u7528\u5834\u666f\uff0c\u9019\u7a2e\u5b58\u5132\u904e\u7a0b\u7121\u7591\u662f\u975e\u5e38\u6709\u7528\u7684\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bcVPS<\/code>\u3001\u9999\u6e2fVPS<\/code>\u6216\u5176\u4ed6\u670d\u52a1\u5668<\/code>\u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff1aServer.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2Oracle\u6a39\u7684\u5b58\u5132\u904e\u7a0b\uff0c\u638c\u63e14\u500b\u5be6\u969b\u64cd\u4f5c\u6b65\u9a5f\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u958b\u767c\u6d41\u7a0b\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-95398","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95398","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=95398"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95398\/revisions"}],"predecessor-version":[{"id":95399,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95398\/revisions\/95399"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}