{"id":190396,"date":"2024-11-12T12:14:21","date_gmt":"2024-11-12T04:14:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/190396\/"},"modified":"2024-11-12T12:14:23","modified_gmt":"2024-11-12T04:14:23","slug":"%e7%82%baoracle%e6%95%b8%e6%93%9a%e8%a1%a8%e5%bb%ba%e7%ab%8b%e7%b4%a2%e5%bc%95%e7%9a%84%e4%b8%80%e5%80%8b%e7%b0%a1%e5%96%ae%e4%be%8b%e5%ad%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/190396\/","title":{"rendered":"\u70baOracle\u6578\u64da\u8868\u5efa\u7acb\u7d22\u5f15\u7684\u4e00\u500b\u7c21\u55ae\u4f8b\u5b50"},"content":{"rendered":"<h1 id=\"%e7%82%baoracle%e6%95%b8%e6%93%9a%e8%a1%a8%e5%bb%ba%e7%ab%8b%e7%b4%a2%e5%bc%95%e7%9a%84%e4%b8%80%e5%80%8b%e7%b0%a1%e5%96%ae%e4%be%8b%e5%ad%90-AWDzUhoJOb\">\u70baOracle\u6578\u64da\u8868\u5efa\u7acb\u7d22\u5f15\u7684\u4e00\u500b\u7c21\u55ae\u4f8b\u5b50<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u6578\u64da\u7d50\u69cb\uff0c\u7528\u65bc\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u6aa2\u7d22\u6578\u64da\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728Oracle\u6578\u64da\u8868\u4e2d\u5efa\u7acb\u7d22\u5f15\uff0c\u4e26\u63d0\u4f9b\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\u4f86\u8aaa\u660e\u5176\u904e\u7a0b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b4%a2%e5%bc%95%ef%bc%9f-AWDzUhoJOb\">\u4ec0\u9ebc\u662f\u7d22\u5f15\uff1f<\/h2>\n<p>\u7d22\u5f15\u662f\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u52a0\u901f\u6578\u64da\u6aa2\u7d22\u7684\u904e\u7a0b\u3002\u5b83\u985e\u4f3c\u65bc\u66f8\u7c4d\u7684\u76ee\u9304\uff0c\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002\u5728Oracle\u4e2d\uff0c\u7d22\u5f15\u53ef\u4ee5\u7528\u65bc\u52a0\u901f\u67e5\u8a62\u3001\u63d0\u9ad8\u6392\u5e8f\u6027\u80fd\uff0c\u751a\u81f3\u53ef\u4ee5\u7528\u65bc\u5f37\u5236\u552f\u4e00\u6027\u7d04\u675f\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e7%b4%a2%e5%bc%95%ef%bc%9f-AWDzUhoJOb\">\u70ba\u4ec0\u9ebc\u9700\u8981\u7d22\u5f15\uff1f<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\uff1a<\/strong>\u7d22\u5f15\u80fd\u5920\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u6240\u9700\u7684\u6642\u9593\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<li><strong>\u6e1b\u5c11I\/O\u64cd\u4f5c\uff1a<\/strong>\u901a\u904e\u4f7f\u7528\u7d22\u5f15\uff0c\u6578\u64da\u5eab\u53ef\u4ee5\u6e1b\u5c11\u78c1\u789fI\/O\u64cd\u4f5c\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u652f\u6301\u552f\u4e00\u6027\u7d04\u675f\uff1a<\/strong>\u7d22\u5f15\u53ef\u4ee5\u7528\u4f86\u5f37\u5236\u6578\u64da\u7684\u552f\u4e00\u6027\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%bb%ba%e7%ab%8b%e7%b4%a2%e5%bc%95%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-AWDzUhoJOb\">\u5efa\u7acb\u7d22\u5f15\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u5efa\u7acb\u7d22\u5f15\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE INDEX index_name\nON table_name (column1, column2, ...);<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>index_name<\/code>\u662f\u7d22\u5f15\u7684\u540d\u7a31\uff0c<code>table_name<\/code>\u662f\u8981\u5efa\u7acb\u7d22\u5f15\u7684\u6578\u64da\u8868\u540d\u7a31\uff0c<code>column1, column2, ...<\/code>\u662f\u9700\u8981\u7d22\u5f15\u7684\u5217\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e7%82%ba%e5%93%a1%e5%b7%a5%e8%a1%a8%e5%bb%ba%e7%ab%8b%e7%b4%a2%e5%bc%95-AWDzUhoJOb\">\u793a\u4f8b\uff1a\u70ba\u54e1\u5de5\u8868\u5efa\u7acb\u7d22\u5f15<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u6578\u64da\u8868\uff0c\u8a72\u8868\u5305\u542b\u4ee5\u4e0b\u5217\uff1a<\/p>\n<ul>\n<li><code>employee_id<\/code> &#8211; \u54e1\u5de5ID<\/li>\n<li><code>first_name<\/code> &#8211; \u540d\u5b57<\/li>\n<li><code>last_name<\/code> &#8211; \u59d3\u6c0f<\/li>\n<li><code>email<\/code> &#8211; \u96fb\u5b50\u90f5\u4ef6<\/li>\n<li><code>hire_date<\/code> &#8211; \u96c7\u7528\u65e5\u671f<\/li>\n<\/ul>\n<p>\u5982\u679c\u6211\u5011\u7d93\u5e38\u6839\u64da<code>last_name<\/code>\u5217\u9032\u884c\u67e5\u8a62\uff0c\u5247\u53ef\u4ee5\u70ba\u8a72\u5217\u5efa\u7acb\u7d22\u5f15\u3002\u4ee5\u4e0b\u662f\u5efa\u7acb\u7d22\u5f15\u7684SQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE INDEX idx_last_name\nON employees (last_name);<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u7576\u6211\u5011\u57f7\u884c\u4ee5\u4e0b\u67e5\u8a62\u6642\uff0c\u6578\u64da\u5eab\u5c07\u4f7f\u7528\u7d22\u5f15\u4f86\u52a0\u901f\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM employees\nWHERE last_name = 'Smith';<\/code><\/pre>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e7%ae%a1%e7%90%86-AWDzUhoJOb\">\u7d22\u5f15\u7684\u7ba1\u7406<\/h2>\n<p>\u5efa\u7acb\u7d22\u5f15\u5f8c\uff0c\u9084\u9700\u8981\u5b9a\u671f\u7ba1\u7406\u548c\u7dad\u8b77\u3002\u9019\u5305\u62ec\u76e3\u63a7\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u6cc1\u3001\u91cd\u5efa\u6216\u91cd\u7d44\u7d22\u5f15\u4ee5\u63d0\u9ad8\u6027\u80fd\u7b49\u3002Oracle\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u548c\u547d\u4ee4\u4f86\u5e6b\u52a9\u7528\u6236\u7ba1\u7406\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-AWDzUhoJOb\">\u7e3d\u7d50<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u901a\u904e\u70ba\u5e38\u7528\u67e5\u8a62\u7684\u5217\u5efa\u7acb\u7d22\u5f15\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u512a\u5316\u6578\u64da\u6aa2\u7d22\u904e\u7a0b\u3002\u4e86\u89e3\u5982\u4f55\u5efa\u7acb\u548c\u7ba1\u7406\u7d22\u5f15\u5c0d\u65bc\u4efb\u4f55\u4f7f\u7528Oracle\u7684\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u4f86\u8aaa\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684Oracle\u6578\u64da\u5eab\uff0cServer.HK\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u70baOracle\u6578\u64da\u8868\u5efa\u7acb\u7d22\u5f15\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u7c21\u55ae\u793a\u4f8b\u52a9\u60a8\u5feb\u901f\u4e0a\u624b\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-190396","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190396","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=190396"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190396\/revisions"}],"predecessor-version":[{"id":190397,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190396\/revisions\/190397"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=190396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=190396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=190396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}