{"id":158851,"date":"2024-11-03T05:26:33","date_gmt":"2024-11-02T21:26:33","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158851\/"},"modified":"2024-11-03T05:26:34","modified_gmt":"2024-11-02T21:26:34","slug":"%e7%ae%a1%e7%90%86oracle%e7%b4%84%e6%9d%9f%e8%88%87%e5%88%86%e5%8d%80%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158851\/","title":{"rendered":"\u7ba1\u7406Oracle\u7d04\u675f\u8207\u5206\u5340\u8868"},"content":{"rendered":"<h1 id=\"%e7%ae%a1%e7%90%86oracle%e7%b4%84%e6%9d%9f%e8%88%87%e5%88%86%e5%8d%80%e8%a1%a8-ZJKkrgTrJj\">\u7ba1\u7406Oracle\u7d04\u675f\u8207\u5206\u5340\u8868<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cOracle\u7684\u7d04\u675f\uff08Constraints\uff09\u548c\u5206\u5340\u8868\uff08Partitioned Tables\uff09\u662f\u5169\u500b\u91cd\u8981\u7684\u6982\u5ff5\u3002\u9019\u4e9b\u529f\u80fd\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u9084\u80fd\u512a\u5316\u67e5\u8a62\u6027\u80fd\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u7ba1\u7406Oracle\u7684\u7d04\u675f\u8207\u5206\u5340\u8868\uff0c\u4e26\u63d0\u4f9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b4%84%e6%9d%9f%ef%bc%9f-ZJKkrgTrJj\">\u4ec0\u9ebc\u662f\u7d04\u675f\uff1f<\/h2>\n<p>\u7d04\u675f\u662f\u7528\u4f86\u9650\u5236\u6578\u64da\u5eab\u8868\u4e2d\u6578\u64da\u7684\u898f\u5247\u3002\u5b83\u5011\u78ba\u4fdd\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u53ef\u9760\u6027\u3002Oracle\u652f\u6301\u591a\u7a2e\u7d04\u675f\u985e\u578b\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u9375\u7d04\u675f\uff08PRIMARY KEY\uff09<\/strong>\uff1a\u78ba\u4fdd\u6bcf\u884c\u6578\u64da\u7684\u552f\u4e00\u6027\u3002<\/li>\n<li><strong>\u5916\u9375\u7d04\u675f\uff08FOREIGN KEY\uff09<\/strong>\uff1a\u78ba\u4fdd\u6578\u64da\u7684\u53c3\u7167\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u552f\u4e00\u7d04\u675f\uff08UNIQUE\uff09<\/strong>\uff1a\u78ba\u4fdd\u67d0\u5217\u7684\u6578\u64da\u5728\u6574\u500b\u8868\u4e2d\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><strong>\u6aa2\u67e5\u7d04\u675f\uff08CHECK\uff09<\/strong>\uff1a\u78ba\u4fdd\u5217\u4e2d\u7684\u6578\u64da\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u3002<\/li>\n<li><strong>\u975e\u7a7a\u7d04\u675f\uff08NOT NULL\uff09<\/strong>\uff1a\u78ba\u4fdd\u67d0\u5217\u4e0d\u80fd\u70ba\u7a7a\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e7%ae%a1%e7%90%86%e7%b4%84%e6%9d%9f-ZJKkrgTrJj\">\u5982\u4f55\u7ba1\u7406\u7d04\u675f<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u5275\u5efa\u3001\u4fee\u6539\u548c\u522a\u9664\u7d04\u675f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u64cd\u4f5c\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e5%89%b5%e5%bb%ba%e7%b4%84%e6%9d%9f-ZJKkrgTrJj\">\u5275\u5efa\u7d04\u675f<\/h3>\n<pre><code>CREATE TABLE employees (\n    employee_id NUMBER PRIMARY KEY,\n    first_name VARCHAR2(50) NOT NULL,\n    last_name VARCHAR2(50) NOT NULL,\n    department_id NUMBER,\n    CONSTRAINT fk_department FOREIGN KEY (department_id)\n    REFERENCES departments(department_id)\n);<\/code><\/pre>\n<h3 id=\"%e4%bf%ae%e6%94%b9%e7%b4%84%e6%9d%9f-ZJKkrgTrJj\">\u4fee\u6539\u7d04\u675f<\/h3>\n<p>\u8981\u4fee\u6539\u73fe\u6709\u7684\u7d04\u675f\uff0c\u60a8\u9700\u8981\u5148\u522a\u9664\u820a\u7684\u7d04\u675f\uff0c\u7136\u5f8c\u518d\u5275\u5efa\u65b0\u7684\u7d04\u675f\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ALTER TABLE employees\nDROP CONSTRAINT fk_department;\n\nALTER TABLE employees\nADD CONSTRAINT fk_department FOREIGN KEY (department_id)\nREFERENCES departments(department_id) ON DELETE CASCADE;<\/code><\/pre>\n<h3 id=\"%e5%88%aa%e9%99%a4%e7%b4%84%e6%9d%9f-ZJKkrgTrJj\">\u522a\u9664\u7d04\u675f<\/h3>\n<pre><code>ALTER TABLE employees\nDROP CONSTRAINT fk_department;<\/code><\/pre>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%86%e5%8d%80%e8%a1%a8%ef%bc%9f-ZJKkrgTrJj\">\u4ec0\u9ebc\u662f\u5206\u5340\u8868\uff1f<\/h2>\n<p>\u5206\u5340\u8868\u662f\u5c07\u5927\u578b\u8868\u5206\u5272\u6210\u66f4\u5c0f\u3001\u66f4\u6613\u65bc\u7ba1\u7406\u7684\u90e8\u5206\u7684\u6280\u8853\u3002\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4e26\u7c21\u5316\u6578\u64da\u7ba1\u7406\u3002Oracle\u652f\u6301\u591a\u7a2e\u5206\u5340\u65b9\u6cd5\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7bc4\u570d\u5206\u5340\uff08Range Partitioning\uff09<\/strong>\uff1a\u6839\u64da\u6578\u64da\u7684\u7bc4\u570d\u9032\u884c\u5206\u5340\u3002<\/li>\n<li><strong>\u5217\u8868\u5206\u5340\uff08List Partitioning\uff09<\/strong>\uff1a\u6839\u64da\u7279\u5b9a\u7684\u503c\u9032\u884c\u5206\u5340\u3002<\/li>\n<li><strong>\u54c8\u5e0c\u5206\u5340\uff08Hash Partitioning\uff09<\/strong>\uff1a\u6839\u64da\u54c8\u5e0c\u503c\u9032\u884c\u5206\u5340\u3002<\/li>\n<li><strong>\u7d44\u5408\u5206\u5340\uff08Composite Partitioning\uff09<\/strong>\uff1a\u7d50\u5408\u591a\u7a2e\u5206\u5340\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e7%ae%a1%e7%90%86%e5%88%86%e5%8d%80%e8%a1%a8-ZJKkrgTrJj\">\u5982\u4f55\u7ba1\u7406\u5206\u5340\u8868<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u5275\u5efa\u548c\u7ba1\u7406\u5206\u5340\u8868\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u7bc4\u570d\u5206\u5340\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE sales (\n    sale_id NUMBER,\n    sale_date DATE,\n    amount NUMBER\n)\nPARTITION BY RANGE (sale_date) (\n    PARTITION p1 VALUES LESS THAN (TO_DATE('2023-01-01', 'YYYY-MM-DD')),\n    PARTITION p2 VALUES LESS THAN (TO_DATE('2024-01-01', 'YYYY-MM-DD'))\n);<\/code><\/pre>\n<h3 id=\"%e6%b7%bb%e5%8a%a0%e5%88%86%e5%8d%80-ZJKkrgTrJj\">\u6dfb\u52a0\u5206\u5340<\/h3>\n<p>\u8981\u5411\u73fe\u6709\u7684\u5206\u5340\u8868\u6dfb\u52a0\u65b0\u5206\u5340\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE sales\nADD PARTITION p3 VALUES LESS THAN (TO_DATE('2025-01-01', 'YYYY-MM-DD'));<\/code><\/pre>\n<h3 id=\"%e5%88%aa%e9%99%a4%e5%88%86%e5%8d%80-ZJKkrgTrJj\">\u522a\u9664\u5206\u5340<\/h3>\n<pre><code>ALTER TABLE sales\nDROP PARTITION p1;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ZJKkrgTrJj\">\u7e3d\u7d50<\/h2>\n<p>\u7ba1\u7406Oracle\u7684\u7d04\u675f\u8207\u5206\u5340\u8868\u662f\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u548c\u512a\u5316\u6027\u80fd\u7684\u95dc\u9375\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528\u7d04\u675f\uff0c\u60a8\u53ef\u4ee5\u4fdd\u8b49\u6578\u64da\u7684\u6e96\u78ba\u6027\uff0c\u800c\u5206\u5340\u8868\u5247\u80fd\u6709\u6548\u5730\u7ba1\u7406\u5927\u578b\u6578\u64da\u96c6\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\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\u6e2fVPS<\/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>\u63a2\u7d22\u5982\u4f55\u6709\u6548\u7ba1\u7406Oracle\u7d04\u675f\u8207\u5206\u5340\u8868\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u8207\u7dad\u8b77\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u8207\u67e5\u8a62\u901f\u5ea6\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-158851","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158851","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=158851"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158851\/revisions"}],"predecessor-version":[{"id":158852,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158851\/revisions\/158852"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158851"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158851"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158851"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}