{"id":187214,"date":"2024-11-11T12:24:19","date_gmt":"2024-11-11T04:24:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187214\/"},"modified":"2024-11-11T12:24:21","modified_gmt":"2024-11-11T04:24:21","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e6%94%be%e5%9c%a8%e5%93%aa%e5%85%92%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e5%ad%98%e6%94%be%e5%9c%a8%e5%93%aa%e8%a3%a1","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187214\/","title":{"rendered":"\u6578\u64da\u5eab\u8996\u5716\u653e\u5728\u54ea\u5152\uff1f (\u6578\u64da\u5eab\u8996\u5716\u5b58\u653e\u5728\u54ea\u88e1)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e6%94%be%e5%9c%a8%e5%93%aa%e5%85%92%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e5%ad%98%e6%94%be%e5%9c%a8%e5%93%aa%e8%a3%a1-oVBJgjUGYC\">\u6578\u64da\u5eab\u8996\u5716\u653e\u5728\u54ea\u5152\uff1f (\u6578\u64da\u5eab\u8996\u5716\u5b58\u653e\u5728\u54ea\u88e1)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u8996\u5716\uff08View\uff09\u662f\u4e00\u7a2e\u865b\u64ec\u8868\u683c\uff0c\u5b83\u662f\u57fa\u65bc\u4e00\u500b\u6216\u591a\u500b\u8868\u683c\u7684\u67e5\u8a62\u7d50\u679c\u3002\u8996\u5716\u7684\u4e3b\u8981\u529f\u80fd\u662f\u7c21\u5316\u6578\u64da\u7684\u67e5\u8a62\uff0c\u63d0\u4f9b\u4e00\u500b\u66f4\u6613\u65bc\u4f7f\u7528\u7684\u6578\u64da\u63a5\u53e3\u3002\u90a3\u9ebc\uff0c\u6578\u64da\u5eab\u8996\u5716\u7a76\u7adf\u5b58\u653e\u5728\u54ea\u88e1\u5462\uff1f\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u4e00\u554f\u984c\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e7%9a%84%e5%ae%9a%e7%be%a9-oVBJgjUGYC\">\u6578\u64da\u5eab\u8996\u5716\u7684\u5b9a\u7fa9<\/h2>\n<p>\u8996\u5716\u662f\u4e00\u7a2e\u865b\u64ec\u8868\u683c\uff0c\u4e26\u4e0d\u5be6\u969b\u5b58\u5132\u6578\u64da\uff0c\u800c\u662f\u5b58\u5132\u67e5\u8a62\u7684\u5b9a\u7fa9\u3002\u7576\u7528\u6236\u67e5\u8a62\u8996\u5716\u6642\uff0c\u6578\u64da\u5eab\u7cfb\u7d71\u6703\u57f7\u884c\u8996\u5716\u7684\u67e5\u8a62\uff0c\u4e26\u8fd4\u56de\u7d50\u679c\u3002\u9019\u4f7f\u5f97\u8996\u5716\u6210\u70ba\u6578\u64da\u5eab\u4e2d\u4e00\u500b\u975e\u5e38\u9748\u6d3b\u7684\u5de5\u5177\uff0c\u80fd\u5920\u6839\u64da\u9700\u8981\u52d5\u614b\u751f\u6210\u6578\u64da\u3002<\/p>\n<h2 id=\"%e8%a6%96%e5%9c%96%e7%9a%84%e5%ad%98%e6%94%be%e4%bd%8d%e7%bd%ae-oVBJgjUGYC\">\u8996\u5716\u7684\u5b58\u653e\u4f4d\u7f6e<\/h2>\n<p>\u8996\u5716\u7684\u5b9a\u7fa9\u5b58\u653e\u5728\u6578\u64da\u5eab\u7684\u7cfb\u7d71\u76ee\u9304\u4e2d\uff0c\u5177\u9ad4\u4f4d\u7f6e\u53d6\u6c7a\u65bc\u6240\u4f7f\u7528\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u53ca\u5176\u8996\u5716\u5b58\u653e\u7684\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li><strong>MySQL<\/strong>: \u5728MySQL\u4e2d\uff0c\u8996\u5716\u7684\u5b9a\u7fa9\u5b58\u5132\u5728information_schema\u8cc7\u6599\u5eab\u7684TABLES\u8868\u4e2d\u3002\u7528\u6236\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u9019\u500b\u8868\u4f86\u7372\u53d6\u8996\u5716\u7684\u76f8\u95dc\u4fe1\u606f\u3002<\/li>\n<li><strong>PostgreSQL<\/strong>: PostgreSQL\u4e5f\u5c07\u8996\u5716\u7684\u5b9a\u7fa9\u5b58\u5132\u5728information_schema\u4e2d\uff0c\u4e26\u4e14\u7528\u6236\u53ef\u4ee5\u4f7f\u7528pg_views\u7cfb\u7d71\u8996\u5716\u4f86\u67e5\u770b\u6240\u6709\u8996\u5716\u7684\u8a73\u7d30\u4fe1\u606f\u3002<\/li>\n<li><strong>SQL Server<\/strong>: \u5728SQL Server\u4e2d\uff0c\u8996\u5716\u7684\u5b9a\u7fa9\u5b58\u5132\u5728sys.views\u7cfb\u7d71\u8868\u4e2d\uff0c\u7528\u6236\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u9019\u500b\u8868\u4f86\u7372\u53d6\u8996\u5716\u7684\u5143\u6578\u64da\u3002<\/li>\n<li><strong>Oracle<\/strong>: Oracle\u6578\u64da\u5eab\u4e2d\u7684\u8996\u5716\u5b9a\u7fa9\u5b58\u5132\u5728USER_VIEWS\u7cfb\u7d71\u8996\u5716\u4e2d\uff0c\u9019\u500b\u8996\u5716\u63d0\u4f9b\u4e86\u7528\u6236\u6240\u64c1\u6709\u7684\u6240\u6709\u8996\u5716\u7684\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a6%96%e5%9c%96%e7%9a%84%e5%84%aa%e5%8b%a2-oVBJgjUGYC\">\u8996\u5716\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528\u8996\u5716\u6709\u591a\u7a2e\u512a\u52e2\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7c21\u5316\u67e5\u8a62<\/strong>: \u8996\u5716\u53ef\u4ee5\u5c01\u88dd\u8907\u96dc\u7684\u67e5\u8a62\uff0c\u4f7f\u7528\u8005\u53ea\u9700\u67e5\u8a62\u8996\u5716\u5373\u53ef\u7372\u5f97\u6240\u9700\u6578\u64da\uff0c\u800c\u7121\u9700\u4e86\u89e3\u5e95\u5c64\u7684\u6578\u64da\u7d50\u69cb\u3002<\/li>\n<li><strong>\u6578\u64da\u5b89\u5168\u6027<\/strong>: \u901a\u904e\u8996\u5716\uff0c\u53ef\u4ee5\u9650\u5236\u7528\u6236\u5c0d\u5e95\u5c64\u8868\u683c\u7684\u8a2a\u554f\u6b0a\u9650\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u5b89\u5168\u6027\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027<\/strong>: \u8996\u5716\u53ef\u4ee5\u63d0\u4f9b\u4e00\u500b\u7d71\u4e00\u7684\u6578\u64da\u63a5\u53e3\uff0c\u78ba\u4fdd\u4e0d\u540c\u7528\u6236\u7372\u53d6\u5230\u7684\u4e00\u81f4\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e8%a6%96%e5%9c%96-oVBJgjUGYC\">\u5982\u4f55\u5275\u5efa\u8996\u5716<\/h2>\n<p>\u5275\u5efa\u8996\u5716\u7684\u8a9e\u6cd5\u5728\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u7565\u6709\u4e0d\u540c\uff0c\u4f46\u57fa\u672c\u7d50\u69cb\u76f8\u4f3c\u3002\u4ee5\u4e0b\u662fMySQL\u4e2d\u5275\u5efa\u8996\u5716\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>CREATE VIEW view_name AS\nSELECT column1, column2, ...\nFROM table_name\nWHERE condition;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70baemployees\u7684\u8868\u683c\uff0c\u6211\u5011\u60f3\u5275\u5efa\u4e00\u500b\u53ea\u986f\u793a\u54e1\u5de5\u59d3\u540d\u548c\u5de5\u8cc7\u7684\u8996\u5716\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>CREATE VIEW employee_salaries AS\nSELECT name, salary\nFROM employees;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-oVBJgjUGYC\">\u7e3d\u7d50<\/h2>\n<p>\u6578\u64da\u5eab\u8996\u5716\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u7c21\u5316\u6578\u64da\u67e5\u8a62\u3001\u63d0\u9ad8\u5b89\u5168\u6027\u548c\u4e00\u81f4\u6027\u3002\u8996\u5716\u7684\u5b9a\u7fa9\u5b58\u653e\u5728\u6578\u64da\u5eab\u7684\u7cfb\u7d71\u76ee\u9304\u4e2d\uff0c\u5177\u9ad4\u4f4d\u7f6e\u53d6\u6c7a\u65bc\u6240\u4f7f\u7528\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u7121\u8ad6\u662fMySQL\u3001PostgreSQL\u3001SQL Server\u9084\u662fOracle\uff0c\u8996\u5716\u90fd\u80fd\u70ba\u7528\u6236\u63d0\u4f9b\u9748\u6d3b\u7684\u6578\u64da\u8a2a\u554f\u65b9\u5f0f\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684\u6578\u64da\u5eab\uff0c\u4eab\u53d7\u7a69\u5b9a\u548c\u5b89\u5168\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u6578\u64da\u5eab\u8996\u5716\u7684\u5b58\u653e\u4f4d\u7f6e\uff0c\u63a2\u7d22\u5176\u5728\u6578\u64da\u5eab\u67b6\u69cb\u4e2d\u7684\u89d2\u8272\u53ca\u7ba1\u7406\u65b9\u5f0f\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\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-187214","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187214","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=187214"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187214\/revisions"}],"predecessor-version":[{"id":187215,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187214\/revisions\/187215"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}