{"id":6117,"date":"2024-11-14T12:35:15","date_gmt":"2024-11-14T04:35:15","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6117\/"},"modified":"2024-11-14T12:35:15","modified_gmt":"2024-11-14T04:35:15","slug":"oracle%e5%a6%82%e4%bd%95%e5%88%9b%e5%bb%ba%e8%a7%86%e5%9b%be","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6117\/","title":{"rendered":"oracle\u5982\u4f55\u521b\u5efa\u89c6\u56fe"},"content":{"rendered":"<blockquote><p>\n  oracle \u4e2d\u521b\u5efa\u89c6\u56fe\u53ef\u63d0\u4f9b\u6570\u636e\u7684\u4e0d\u540c\u89c6\u89d2\uff0c\u65e0\u9700\u4fee\u6539\u57fa\u7840\u8868\u3002\u6b65\u9aa4\u5982\u4e0b\uff1a1. \u4f7f\u7528 create view \u8bed\u53e5\u6307\u5b9a\u89c6\u56fe\u540d\u79f0\u3001\u5217\u540d\u548c\u67e5\u8be2\uff1b2. \u89c6\u56fe\u5217\u540d\u53ef\u4e0e\u57fa\u7840\u8868\u5217\u540d\u76f8\u540c\uff0c\u4e0d\u540c\u5219\u4f7f\u7528 as \u522b\u540d\uff1b3. \u67e5\u8be2\u53ef\u5305\u542b join\u3001where \u7b49\u5b50\u53e5\uff1b4. \u521b\u5efa\u8005\u9700\u5177\u6709\u57fa\u7840\u8868 select \u6743\u9650\uff0c\u5176\u4ed6\u7528\u6237\u9700\u83b7\u5f97\u89c6\u56fe select \u6743\u9650\u3002\u89c6\u56fe\u4f18\u52bf\u5305\u62ec\uff1a\u6570\u636e\u5b89\u5168\u3001\u8bbf\u95ee\u7b80\u5316\u3001\u903b\u8f91\u6570\u636e\u5efa\u6a21\u548c\u6027\u80fd\u63d0\u5347\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/13\/2024061300182162676.jpg\" class=\"aligncenter\" title=\"oracle\u5982\u4f55\u521b\u5efa\u89c6\u56fe\u63d2\u56fe\" alt=\"oracle\u5982\u4f55\u521b\u5efa\u89c6\u56fe\u63d2\u56fe\" \/><\/p>\n<h2>Oracle \u4e2d\u521b\u5efa\u89c6\u56fe<\/h2>\n<p>\u89c6\u56fe\u662f\u4e00\u79cd\u865a\u62df\u8868\uff0c\u5b83\u4ece\u4e00\u4e2a\u6216\u591a\u4e2a\u5e95\u5c42\u8868\u4e2d\u6d3e\u751f\u6570\u636e\u3002\u521b\u5efa\u89c6\u56fe\u5141\u8bb8\u60a8\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u67e5\u770b\u6570\u636e\uff0c\u800c\u65e0\u9700\u590d\u5236\u6216\u4fee\u6539\u539f\u59cb\u8868\u3002<\/p>\n<h3>\u6b65\u9aa4<\/h3>\n<p><strong>1. \u521b\u5efa\u89c6\u56fe\u8bed\u53e5<\/strong><\/p>\n<p>\u4f7f\u7528 CREATE VIEW \u8bed\u53e5\u521b\u5efa\u89c6\u56fe\u3002\u8be5\u8bed\u53e5\u5305\u542b\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<ul>\n<li> <strong>\u89c6\u56fe\u540d\uff1a<\/strong>\u60a8\u5e0c\u671b\u89c6\u56fe\u62e5\u6709\u7684\u540d\u79f0\u3002<\/li>\n<li> <strong>\u5217\u540d\uff1a<\/strong>\u89c6\u56fe\u4e2d\u5c06\u663e\u793a\u7684\u5217\u7684\u5217\u8868\u3002<\/li>\n<li> <strong>\u67e5\u8be2\uff1a<\/strong>\u4ece\u539f\u59cb\u8868\u4e2d\u9009\u62e9\u6570\u636e\u7684\u67e5\u8be2\u3002<\/li>\n<\/ul>\n<p><strong>2. \u793a\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a customer_view \u7684\u89c6\u56fe\uff0c\u8be5\u89c6\u56fe\u663e\u793a\u4e86\u8868 customers \u4e2d\u7684\u6240\u6709\u5217\uff0c\u5e76\u5bf9\u5e74\u9f84\u8fdb\u884c\u7b5b\u9009\uff1a<\/p>\n<pre>CREATE VIEW customer_view AS\nSELECT *\nFROM customers\nWHERE age &gt; 25;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h3>\u7ec6\u5219<\/h3>\n<p><strong>\u5217\u540d\uff1a<\/strong><\/p>\n<ul>\n<li>\u89c6\u56fe\u4e2d\u7684\u5217\u540d\u53ef\u4ee5\u4e0e\u539f\u59cb\u8868\u7684\u5217\u540d\u76f8\u540c\u6216\u4e0d\u540c\u3002<\/li>\n<li>\u5982\u679c\u5217\u540d\u4e0d\u540c\uff0c\u8bf7\u5728 SELECT \u5b50\u53e5\u4e2d\u4f7f\u7528 AS \u5173\u952e\u5b57\u5c06\u522b\u540d\u6307\u5b9a\u7ed9\u5217\u3002<\/li>\n<\/ul>\n<p><strong>\u67e5\u8be2\uff1a<\/strong><\/p>\n<ul>\n<li>\u67e5\u8be2\u53ef\u4ee5\u4e0e\u539f\u59cb\u8868\u7684\u4efb\u4f55\u6709\u6548 SELECT \u8bed\u53e5\u76f8\u540c\u3002<\/li>\n<li>\u53ef\u4ee5\u4f7f\u7528 JOIN\u3001WHERE \u548c\u5176\u4ed6\u5b50\u53e5\u6765\u8fc7\u6ee4\u548c\u7ec4\u5408\u6570\u636e\u3002<\/li>\n<\/ul>\n<p><strong>\u6743\u9650\uff1a<\/strong><\/p>\n<ul>\n<li>\u521b\u5efa\u89c6\u56fe\u7684\u7528\u6237\u5fc5\u987b\u5bf9\u539f\u59cb\u8868\u5177\u6709 SELECT \u6743\u9650\u3002<\/li>\n<li>\u5176\u4ed6\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u6388\u4e88\u4ed6\u4eec\u5bf9\u89c6\u56fe\u7684 SELECT \u6743\u9650\u6765\u8bbf\u95ee\u89c6\u56fe\u3002<\/li>\n<\/ul>\n<h3>\u4f18\u52bf<\/h3>\n<p>\u521b\u5efa\u89c6\u56fe\u5177\u6709\u4ee5\u4e0b\u4f18\u52bf\uff1a<\/p>\n<ul>\n<li> <strong>\u6570\u636e\u5b89\u5168\u6027\uff1a<\/strong>\u89c6\u56fe\u53ef\u4ee5\u9690\u85cf\uff0c\u4f8b\u5982\u5ba2\u6237\u7684\u4e2a\u4eba\u4fe1\u606f\u3002<\/li>\n<li> <strong>\u7b80\u5316\u8bbf\u95ee\uff1a<\/strong>\u89c6\u56fe\u53ef\u4ee5\u63d0\u4f9b\u5bf9\u590d\u6742\u6570\u636e\u7684\u7b80\u5316\u89c6\u56fe\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u5730\u8fdb\u884c\u67e5\u8be2\u548c\u62a5\u544a\u3002<\/li>\n<li> <strong>\u903b\u8f91\u6570\u636e\u6a21\u578b\uff1a<\/strong>\u89c6\u56fe\u53ef\u4ee5\u8868\u793a\u6570\u636e\u4e4b\u95f4\u7684\u7279\u5b9a\u5173\u7cfb\uff0c\u4ece\u800c\u7b80\u5316\u6570\u636e\u5efa\u6a21\u3002<\/li>\n<li> <strong>\u6027\u80fd\uff1a<\/strong>\u5982\u679c\u89c6\u56fe\u67e5\u8be2\u6d89\u53ca\u7ecf\u5e38\u8bbf\u95ee\u7684\u6570\u636e\uff0c\u5219\u5b83\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u521b\u5efa\u89c6\u56fe\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>oracle \u4e2d\u521b\u5efa\u89c6\u56fe\u53ef\u63d0\u4f9b\u6570\u636e\u7684\u4e0d\u540c\u89c6\u89d2\uff0c\u65e0\u9700\u4fee\u6539\u57fa\u7840\u8868\u3002\u6b65\u9aa4\u5982\u4e0b\uff1a1. \u4f7f\u7528 create view \u8bed\u53e5\u6307\u5b9a\u89c6\u56fe\u540d\u79f0\u3001\u5217\u540d\u548c\u67e5\u8be2\uff1b2. \u89c6\u56fe\u5217\u540d\u53ef\u4e0e\u57fa\u7840\u8868\u5217\u540d\u76f8\u540c\uff0c\u4e0d\u540c\u5219\u4f7f\u7528 as \u522b\u540d\uff1b3. \u67e5\u8be2\u53ef\u5305\u542b join\u3001where \u7b49\u5b50\u53e5\uff1b4. \u521b\u5efa\u8005\u9700\u5177\u6709\u57fa\u7840\u8868 select \u6743\u9650\uff0c\u5176\u4ed6\u7528\u6237\u9700\u83b7\u5f97\u89c6\u56fe select \u6743\u9650\u3002\u89c6\u56fe\u4f18\u52bf\u5305\u62ec\uff1a\u6570\u636e\u5b89\u5168\u3001\u8bbf\u95ee\u7b80\u5316\u3001\u903b\u8f91\u6570\u636e\u5efa\u6a21\u548c\u6027\u80fd\u63d0\u5347\u3002 Oracle \u4e2d\u521b\u5efa\u89c6\u56fe \u89c6\u56fe\u662f\u4e00\u79cd\u865a\u62df\u8868\uff0c\u5b83\u4ece\u4e00\u4e2a\u6216\u591a\u4e2a\u5e95\u5c42\u8868\u4e2d\u6d3e\u751f\u6570\u636e\u3002\u521b\u5efa\u89c6\u56fe\u5141\u8bb8\u60a8\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u67e5\u770b\u6570\u636e\uff0c\u800c\u65e0\u9700\u590d\u5236\u6216\u4fee\u6539\u539f\u59cb\u8868\u3002 \u6b65\u9aa4 1. \u521b\u5efa\u89c6\u56fe\u8bed\u53e5 \u4f7f\u7528 CREATE VIEW \u8bed\u53e5\u521b\u5efa\u89c6\u56fe\u3002\u8be5\u8bed\u53e5\u5305\u542b\u4ee5\u4e0b\u5185\u5bb9\uff1a \u89c6\u56fe\u540d\uff1a\u60a8\u5e0c\u671b\u89c6\u56fe\u62e5\u6709\u7684\u540d\u79f0\u3002 \u5217\u540d\uff1a\u89c6\u56fe\u4e2d\u5c06\u663e\u793a\u7684\u5217\u7684\u5217\u8868\u3002 \u67e5\u8be2\uff1a\u4ece\u539f\u59cb\u8868\u4e2d\u9009\u62e9\u6570\u636e\u7684\u67e5\u8be2\u3002 2. \u793a\u4f8b \u4ee5\u4e0b\u793a\u4f8b\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a customer_view \u7684\u89c6\u56fe\uff0c\u8be5\u89c6\u56fe\u663e\u793a\u4e86\u8868 customers \u4e2d\u7684\u6240\u6709\u5217\uff0c\u5e76\u5bf9\u5e74\u9f84\u8fdb\u884c\u7b5b\u9009\uff1a CREATE VIEW customer_view AS SELECT * FROM customers WHERE age &gt; 25; \u767b\u5f55\u540e\u590d\u5236 \u7ec6\u5219 \u5217\u540d\uff1a \u89c6\u56fe\u4e2d\u7684\u5217\u540d\u53ef\u4ee5\u4e0e\u539f\u59cb\u8868\u7684\u5217\u540d\u76f8\u540c\u6216\u4e0d\u540c\u3002 \u5982\u679c\u5217\u540d\u4e0d\u540c\uff0c\u8bf7\u5728 SELECT [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-6117","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6117","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=6117"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6117\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6117"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}