{"id":94598,"date":"2024-10-19T19:35:16","date_gmt":"2024-10-19T11:35:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94598\/"},"modified":"2024-10-19T19:35:17","modified_gmt":"2024-10-19T11:35:17","slug":"oracle-%e5%a4%8d%e5%90%88%e9%a1%9e%e5%9e%8b%e4%b8%ad%e7%9a%84%e8%a1%a8%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94598\/","title":{"rendered":"Oracle \u590d\u5408\u985e\u578b\u4e2d\u7684\u8868\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"<h1 id=\"oracle-%e5%a4%8d%e5%90%88%e9%a1%9e%e5%9e%8b%e4%b8%ad%e7%9a%84%e8%a1%a8%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f-vrnJMZhoOe\">Oracle \u590d\u5408\u985e\u578b\u4e2d\u7684\u8868\u6709\u54ea\u4e9b\uff1f<\/h1>\n<p>\u5728Oracle\u8cc7\u6599\u5eab\u4e2d\uff0c\u5fa9\u5408\u985e\u578b\uff08Composite Types\uff09\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u6578\u64da\u7d50\u69cb\uff0c\u5141\u8a31\u7528\u6236\u5b9a\u7fa9\u8907\u96dc\u7684\u6578\u64da\u985e\u578b\u3002\u9019\u4e9b\u5fa9\u5408\u985e\u578b\u53ef\u4ee5\u5305\u542b\u591a\u500b\u5c6c\u6027\uff0c\u4e26\u4e14\u53ef\u4ee5\u7528\u65bc\u5275\u5efa\u66f4\u70ba\u9748\u6d3b\u548c\u53ef\u64f4\u5c55\u7684\u6578\u64da\u6a21\u578b\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u4e2d\u7684\u5fa9\u5408\u985e\u578b\uff0c\u7279\u5225\u662f\u5b83\u5011\u5982\u4f55\u8207\u8868\u7d50\u5408\u4f7f\u7528\u3002<\/p>\n<h2 id=\"%e5%be%a9%e5%90%88%e9%a1%9e%e5%9e%8b%e7%9a%84%e5%ae%9a%e7%be%a9-vrnJMZhoOe\">\u5fa9\u5408\u985e\u578b\u7684\u5b9a\u7fa9<\/h2>\n<p>\u5fa9\u5408\u985e\u578b\u662f\u7531\u591a\u500b\u57fa\u672c\u6578\u64da\u985e\u578b\u7d44\u6210\u7684\u6578\u64da\u7d50\u69cb\u3002\u5728Oracle\u4e2d\uff0c\u5fa9\u5408\u985e\u578b\u53ef\u4ee5\u662f\u5c0d\u8c61\u985e\u578b\uff08Object Types\uff09\u6216\u5d4c\u5957\u8868\uff08Nested Tables\uff09\u548c\u8b8a\u91cf\u6578\u7d44\uff08Varrays\uff09\u3002\u9019\u4e9b\u985e\u578b\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u5275\u5efa\u66f4\u70ba\u8907\u96dc\u7684\u6578\u64da\u7d50\u69cb\uff0c\u4e26\u4e14\u80fd\u5920\u5728\u6578\u64da\u5eab\u4e2d\u9032\u884c\u66f4\u70ba\u9748\u6d3b\u7684\u6578\u64da\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e5%b0%8d%e8%b1%a1%e9%a1%9e%e5%9e%8b%ef%bc%88object-types%ef%bc%89-vrnJMZhoOe\">\u5c0d\u8c61\u985e\u578b\uff08Object Types\uff09<\/h2>\n<p>\u5c0d\u8c61\u985e\u578b\u662f\u4e00\u7a2e\u7528\u65bc\u5b9a\u7fa9\u5177\u6709\u5c6c\u6027\u548c\u65b9\u6cd5\u7684\u6578\u64da\u7d50\u69cb\u3002\u6bcf\u500b\u5c0d\u8c61\u985e\u578b\u90fd\u53ef\u4ee5\u5305\u542b\u591a\u500b\u5c6c\u6027\uff0c\u9019\u4e9b\u5c6c\u6027\u53ef\u4ee5\u662f\u57fa\u672c\u6578\u64da\u985e\u578b\u6216\u5176\u4ed6\u5c0d\u8c61\u985e\u578b\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u5c0d\u8c61\u985e\u578b\u5b9a\u7fa9\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE OR REPLACE TYPE person_type AS OBJECT (\n    first_name VARCHAR2(50),\n    last_name VARCHAR2(50),\n    age NUMBER\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba <code>person_type<\/code> \u7684\u5c0d\u8c61\u985e\u578b\uff0c\u5305\u542b\u4e09\u500b\u5c6c\u6027\uff1a\u540d\u5b57\u3001\u59d3\u6c0f\u548c\u5e74\u9f61\u3002<\/p>\n<h2 id=\"%e5%b5%8c%e5%a5%97%e8%a1%a8%ef%bc%88nested-tables%ef%bc%89-vrnJMZhoOe\">\u5d4c\u5957\u8868\uff08Nested Tables\uff09<\/h2>\n<p>\u5d4c\u5957\u8868\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u6578\u64da\u7d50\u69cb\uff0c\u5141\u8a31\u7528\u6236\u5728\u8868\u4e2d\u5b58\u5132\u591a\u500b\u503c\u3002\u9019\u4e9b\u503c\u53ef\u4ee5\u662f\u76f8\u540c\u985e\u578b\u7684\u6578\u64da\uff0c\u4e26\u4e14\u53ef\u4ee5\u5728\u4e00\u500b\u8868\u7684\u884c\u4e2d\u9032\u884c\u5b58\u5132\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5d4c\u5957\u8868\u7684\u5b9a\u7fa9\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TYPE phone_number_type AS TABLE OF VARCHAR2(15);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba <code>phone_number_type<\/code> \u7684\u5d4c\u5957\u8868\uff0c\u8a72\u8868\u53ef\u4ee5\u5b58\u5132\u591a\u500b\u96fb\u8a71\u865f\u78bc\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%be%a9%e5%90%88%e9%a1%9e%e5%9e%8b%e5%89%b5%e5%bb%ba%e8%a1%a8-vrnJMZhoOe\">\u4f7f\u7528\u5fa9\u5408\u985e\u578b\u5275\u5efa\u8868<\/h2>\n<p>\u4e00\u65e6\u5b9a\u7fa9\u4e86\u5fa9\u5408\u985e\u578b\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u9019\u4e9b\u985e\u578b\u4f86\u5275\u5efa\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u5c0d\u8c61\u985e\u578b\u548c\u5d4c\u5957\u8868\u4f86\u5275\u5efa\u4e00\u500b\u8868\uff1a<\/p>\n<pre><code>CREATE TABLE employees (\n    employee_id NUMBER,\n    employee_info person_type,\n    phone_numbers phone_number_type\n) NESTED TABLE phone_numbers STORE AS phone_numbers_table;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u8a72\u8868\u5305\u542b\u4e00\u500b\u54e1\u5de5ID\u3001\u4e00\u500b\u5c0d\u8c61\u985e\u578b\u7684\u54e1\u5de5\u4fe1\u606f\uff0c\u4ee5\u53ca\u4e00\u500b\u5d4c\u5957\u8868\u4f86\u5b58\u5132\u591a\u500b\u96fb\u8a71\u865f\u78bc\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e5%be%a9%e5%90%88%e9%a1%9e%e5%9e%8b%e7%9a%84%e6%95%b8%e6%93%9a-vrnJMZhoOe\">\u67e5\u8a62\u5fa9\u5408\u985e\u578b\u7684\u6578\u64da<\/h2>\n<p>\u67e5\u8a62\u5305\u542b\u5fa9\u5408\u985e\u578b\u7684\u8868\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u9ede\u7b26\u865f\u4f86\u8a2a\u554f\u5c0d\u8c61\u7684\u5c6c\u6027\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u54e1\u5de5\u7684\u540d\u5b57\u548c\u96fb\u8a71\u865f\u78bc\uff1a<\/p>\n<pre><code>SELECT e.employee_info.first_name, t.column_value AS phone_number\nFROM employees e, TABLE(e.phone_numbers) t;\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u4f7f\u7528\u4e86 <code>TABLE<\/code> \u51fd\u6578\u4f86\u5c55\u958b\u5d4c\u5957\u8868\uff0c\u4e26\u4e14\u4f7f\u7528\u4e86\u9ede\u7b26\u865f\u4f86\u8a2a\u554f\u5c0d\u8c61\u7684\u5c6c\u6027\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-vrnJMZhoOe\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u4e2d\u7684\u5fa9\u5408\u985e\u578b\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9748\u6d3b\u7684\u65b9\u5f0f\u4f86\u5b9a\u7fa9\u548c\u64cd\u4f5c\u8907\u96dc\u7684\u6578\u64da\u7d50\u69cb\u3002\u901a\u904e\u4f7f\u7528\u5c0d\u8c61\u985e\u578b\u3001\u5d4c\u5957\u8868\u548c\u8b8a\u91cf\u6578\u7d44\uff0c\u7528\u6236\u53ef\u4ee5\u5275\u5efa\u66f4\u70ba\u5f37\u5927\u548c\u53ef\u64f4\u5c55\u7684\u6578\u64da\u6a21\u578b\u3002\u9019\u4e9b\u7279\u6027\u4f7f\u5f97Oracle\u6210\u70ba\u8655\u7406\u8907\u96dc\u6578\u64da\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u4f7f\u7528\u9019\u4e9b\u5fa9\u5408\u985e\u578b\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u53ca\u5176\u76f8\u95dc\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle\u590d\u5408\u7c7b\u578b\u4e2d\u7684\u8868\uff0c\u5305\u62ec\u5176\u7ed3\u6784\u3001\u7528\u9014\u53ca\u5728\u6570\u636e\u5e93\u4e2d\u7684\u5e94\u7528\uff0c\u63d0\u5347\u6570\u636e\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-94598","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94598","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=94598"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94598\/revisions"}],"predecessor-version":[{"id":94599,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94598\/revisions\/94599"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94598"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94598"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}