{"id":154587,"date":"2024-11-02T17:03:20","date_gmt":"2024-11-02T09:03:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/154587\/"},"modified":"2024-11-02T17:03:21","modified_gmt":"2024-11-02T09:03:21","slug":"%e5%b0%8d-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e4%b8%ad%e5%ad%97%e6%ae%b5%e7%9a%84%e6%ad%a3%e7%a2%ba%e4%bd%bf%e7%94%a8%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/154587\/","title":{"rendered":"\u5c0d Oracle \u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u5b57\u6bb5\u7684\u6b63\u78ba\u4f7f\u7528\u65b9\u6848"},"content":{"rendered":"<h1 id=\"%e5%b0%8d-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e4%b8%ad%e5%ad%97%e6%ae%b5%e7%9a%84%e6%ad%a3%e7%a2%ba%e4%bd%bf%e7%94%a8%e6%96%b9%e6%a1%88-PkyBFFnjUe\">\u5c0d Oracle \u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u5b57\u6bb5\u7684\u6b63\u78ba\u4f7f\u7528\u65b9\u6848<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u548c\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002Oracle \u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u652f\u6301\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u548c\u6aa2\u7d22\u3002\u5728\u8a2d\u8a08 Oracle \u6578\u64da\u5eab\u6642\uff0c\u5b57\u6bb5\u7684\u6b63\u78ba\u4f7f\u7528\u65b9\u6848\u81f3\u95dc\u91cd\u8981\uff0c\u9019\u4e0d\u50c5\u5f71\u97ff\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u9084\u5f71\u97ff\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n<h2 id=\"1-%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%e7%9a%84%e9%81%b8%e6%93%87-PkyBFFnjUe\">1. \u5b57\u6bb5\u985e\u578b\u7684\u9078\u64c7<\/h2>\n<p>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u5b57\u6bb5\u985e\u578b\u662f\u7b2c\u4e00\u6b65\u3002Oracle \u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\u6578\u5b57\u3001\u5b57\u7b26\u3001\u65e5\u671f\u548c\u4e8c\u9032\u5236\u6578\u64da\u7b49\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u53ef\u4ee5\u6709\u6548\u5730\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\u4e26\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<ul>\n<li><strong>\u6578\u5b57\u985e\u578b\uff1a<\/strong>\u5c0d\u65bc\u9700\u8981\u9032\u884c\u6578\u5b78\u8a08\u7b97\u7684\u5b57\u6bb5\uff0c\u61c9\u4f7f\u7528 NUMBER \u985e\u578b\u3002\u6839\u64da\u9700\u8981\u7684\u7cbe\u5ea6\u548c\u7bc4\u570d\u9078\u64c7\u5408\u9069\u7684\u7cbe\u5ea6\uff0c\u4f8b\u5982 NUMBER(10,2) \u53ef\u4ee5\u5b58\u5132\u6700\u591a 10 \u4f4d\u6578\u5b57\uff0c\u5176\u4e2d 2 \u4f4d\u70ba\u5c0f\u6578\u3002<\/li>\n<li><strong>\u5b57\u7b26\u985e\u578b\uff1a<\/strong>\u5c0d\u65bc\u6587\u672c\u6578\u64da\uff0c\u61c9\u4f7f\u7528 VARCHAR2 \u6216 CHAR \u985e\u578b\u3002VARCHAR2 \u662f\u53ef\u8b8a\u9577\u5ea6\u7684\u5b57\u7b26\u6578\u64da\u985e\u578b\uff0c\u9069\u5408\u5b58\u5132\u9577\u5ea6\u4e0d\u4e00\u7684\u5b57\u7b26\u4e32\uff0c\u800c CHAR \u662f\u56fa\u5b9a\u9577\u5ea6\u7684\u5b57\u7b26\u6578\u64da\u985e\u578b\uff0c\u9069\u5408\u5b58\u5132\u9577\u5ea6\u4e00\u81f4\u7684\u5b57\u7b26\u4e32\u3002<\/li>\n<li><strong>\u65e5\u671f\u985e\u578b\uff1a<\/strong>\u4f7f\u7528 DATE \u985e\u578b\u4f86\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\u3002Oracle \u7684 DATE \u985e\u578b\u53ef\u4ee5\u5b58\u5132\u5f9e 4712 BC \u5230 9999 AD \u7684\u65e5\u671f\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%ad%97%e6%ae%b5%e7%9a%84%e5%91%bd%e5%90%8d%e8%a6%8f%e5%89%87-PkyBFFnjUe\">2. \u5b57\u6bb5\u7684\u547d\u540d\u898f\u5247<\/h2>\n<p>\u5b57\u6bb5\u7684\u547d\u540d\u898f\u5247\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\u81f3\u95dc\u91cd\u8981\u3002\u826f\u597d\u7684\u547d\u540d\u898f\u5247\u61c9\u8a72\u7c21\u6f54\u660e\u4e86\uff0c\u80fd\u5920\u6e05\u695a\u5730\u8868\u9054\u5b57\u6bb5\u7684\u542b\u7fa9\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u6709\u610f\u7fa9\u7684\u540d\u7a31\uff0c\u4f8b\u5982\u4f7f\u7528 <code>customer_name<\/code> \u800c\u4e0d\u662f <code>cn<\/code>\u3002<\/li>\n<li>\u907f\u514d\u4f7f\u7528\u4fdd\u7559\u5b57\u548c\u7279\u6b8a\u5b57\u7b26\uff0c\u4ee5\u514d\u5f15\u8d77\u8a9e\u6cd5\u932f\u8aa4\u3002<\/li>\n<li>\u4f7f\u7528\u4e0b\u5283\u7dda\u5206\u9694\u55ae\u8a5e\uff0c\u4f8b\u5982 <code>order_date<\/code>\uff0c\u4ee5\u63d0\u9ad8\u53ef\u8b80\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e5%ad%97%e6%ae%b5%e7%9a%84%e7%b4%84%e6%9d%9f%e6%a2%9d%e4%bb%b6-PkyBFFnjUe\">3. \u5b57\u6bb5\u7684\u7d04\u675f\u689d\u4ef6<\/h2>\n<p>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u61c9\u8a72\u70ba\u5b57\u6bb5\u8a2d\u7f6e\u9069\u7576\u7684\u7d04\u675f\u689d\u4ef6\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u5e38\u898b\u7684\u7d04\u675f\u689d\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>NOT NULL\uff1a<\/strong>\u78ba\u4fdd\u5b57\u6bb5\u4e0d\u80fd\u70ba\u7a7a\u3002<\/li>\n<li><strong>UNIQUE\uff1a<\/strong>\u78ba\u4fdd\u5b57\u6bb5\u7684\u503c\u5728\u6574\u500b\u8868\u4e2d\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><strong>CHECK\uff1a<\/strong>\u8a2d\u7f6e\u689d\u4ef6\u4ee5\u9650\u5236\u5b57\u6bb5\u7684\u503c\uff0c\u4f8b\u5982 <code>CHECK (age &gt;= 18)<\/code> \u78ba\u4fdd\u5e74\u9f61\u5b57\u6bb5\u7684\u503c\u5fc5\u9808\u5927\u65bc\u6216\u7b49\u65bc 18\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e5%ad%97%e6%ae%b5%e7%9a%84%e7%b4%a2%e5%bc%95-PkyBFFnjUe\">4. \u5b57\u6bb5\u7684\u7d22\u5f15<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u53ef\u4ee5\u70ba\u7d93\u5e38\u67e5\u8a62\u7684\u5b57\u6bb5\u5275\u5efa\u7d22\u5f15\u3002\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u6578\u64da\u6aa2\u7d22\uff0c\u4f46\u4e5f\u6703\u589e\u52a0\u6578\u64da\u63d2\u5165\u548c\u66f4\u65b0\u7684\u6210\u672c\u3002\u56e0\u6b64\uff0c\u5728\u5275\u5efa\u7d22\u5f15\u6642\u61c9\u8b39\u614e\u8003\u616e\uff0c\u9078\u64c7\u90a3\u4e9b\u67e5\u8a62\u983b\u7e41\u4e14\u4e0d\u7d93\u5e38\u66f4\u65b0\u7684\u5b57\u6bb5\u3002<\/p>\n<pre><code>CREATE INDEX idx_customer_name ON customers (customer_name);<\/code><\/pre>\n<h2 id=\"5-%e5%ad%97%e6%ae%b5%e7%9a%84%e6%96%87%e6%aa%94%e5%8c%96-PkyBFFnjUe\">5. \u5b57\u6bb5\u7684\u6587\u6a94\u5316<\/h2>\n<p>\u6700\u5f8c\uff0c\u5c0d\u65bc\u6bcf\u500b\u5b57\u6bb5\u7684\u7528\u9014\u3001\u6578\u64da\u985e\u578b\u548c\u7d04\u675f\u689d\u4ef6\u9032\u884c\u6587\u6a94\u5316\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u958b\u767c\u4eba\u54e1\u7406\u89e3\u6578\u64da\u5eab\u7d50\u69cb\uff0c\u9084\u80fd\u5728\u672a\u4f86\u7684\u7dad\u8b77\u4e2d\u63d0\u4f9b\u53c3\u8003\u3002<\/p>\n<h3 id=\"%e7%b8%bd%e7%b5%90-PkyBFFnjUe\">\u7e3d\u7d50<\/h3>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u6b63\u78ba\u4f7f\u7528\u5b57\u6bb5\u7684\u65b9\u6848\u5305\u62ec\u9078\u64c7\u5408\u9069\u7684\u5b57\u6bb5\u985e\u578b\u3001\u9075\u5faa\u547d\u540d\u898f\u5247\u3001\u8a2d\u7f6e\u7d04\u675f\u689d\u4ef6\u3001\u5275\u5efa\u7d22\u5f15\u4ee5\u53ca\u9032\u884c\u6587\u6a94\u5316\u3002\u9019\u4e9b\u505a\u6cd5\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u512a\u5316\u60a8\u7684\u6578\u64da\u5eab\u8a2d\u8a08\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u6211\u5011\u63d0\u4f9b\u5404\u7a2e <a href=\"https:\/\/server.hk\">VPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u60a8\u7684\u6578\u64da\u5eab\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 Oracle \u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u5b57\u6bb5\u7684\u6700\u4f73\u4f7f\u7528\u65b9\u6848\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u8207\u6027\u80fd\uff0c\u78ba\u4fdd\u6578\u64da\u6e96\u78ba\u6027\u8207\u4e00\u81f4\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-154587","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154587","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=154587"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154587\/revisions"}],"predecessor-version":[{"id":154588,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154587\/revisions\/154588"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=154587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=154587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=154587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}