{"id":160713,"date":"2024-11-04T00:23:23","date_gmt":"2024-11-03T16:23:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160713\/"},"modified":"2024-11-04T00:23:24","modified_gmt":"2024-11-03T16:23:24","slug":"sqlite-%e6%95%99%e7%a8%8b%ef%bc%9asqlite-%e8%a6%96%e5%9c%96%ef%bc%88view%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160713\/","title":{"rendered":"SQLITE \u6559\u7a0b\uff1aSQLite \u8996\u5716\uff08View\uff09"},"content":{"rendered":"<h1 id=\"sqlite-%e6%95%99%e7%a8%8b%ef%bc%9asqlite-%e8%a6%96%e5%9c%96%ef%bc%88view%ef%bc%89-LoJBFhIcCL\">SQLITE \u6559\u7a0b\uff1aSQLite \u8996\u5716\uff08View\uff09<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u8996\u5716\uff08View\uff09\u662f\u4e00\u7a2e\u865b\u64ec\u8868\u683c\uff0c\u5b83\u662f\u57fa\u65bc SQL \u67e5\u8a62\u7684\u7d50\u679c\u96c6\u3002SQLite \u4f5c\u70ba\u4e00\u500b\u8f15\u91cf\u7d1a\u7684\u8cc7\u6599\u5eab\u5f15\u64ce\uff0c\u652f\u6301\u8996\u5716\u7684\u5275\u5efa\u548c\u4f7f\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e SQLite \u4e2d\u7684\u8996\u5716\uff0c\u5305\u62ec\u5176\u5b9a\u7fa9\u3001\u5275\u5efa\u3001\u4f7f\u7528\u53ca\u5176\u512a\u52e2\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%a6%96%e5%9c%96%ef%bc%9f-LoJBFhIcCL\">\u4ec0\u9ebc\u662f\u8996\u5716\uff1f<\/h2>\n<p>\u8996\u5716\u662f\u4e00\u500b\u547d\u540d\u7684\u67e5\u8a62\uff0c\u7576\u4f60\u67e5\u8a62\u8996\u5716\u6642\uff0c\u5be6\u969b\u4e0a\u662f\u57f7\u884c\u8a72\u67e5\u8a62\u4e26\u8fd4\u56de\u7d50\u679c\u3002\u8996\u5716\u4e0d\u5132\u5b58\u6578\u64da\uff0c\u800c\u662f\u52d5\u614b\u751f\u6210\u6578\u64da\u3002\u9019\u4f7f\u5f97\u8996\u5716\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u56e0\u70ba\u5b83\u5011\u53ef\u4ee5\u7c21\u5316\u8907\u96dc\u7684\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u4e00\u500b\u66f4\u6613\u65bc\u4f7f\u7528\u7684\u4ecb\u9762\u3002<\/p>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e8%a6%96%e5%9c%96-LoJBFhIcCL\">\u5275\u5efa\u8996\u5716<\/h2>\n<p>\u5728 SQLite \u4e2d\uff0c\u5275\u5efa\u8996\u5716\u7684\u8a9e\u6cd5\u5982\u4e0b\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\u70ba <code>employees<\/code> \u7684\u8868\u683c\uff0c\u5305\u542b\u54e1\u5de5\u7684\u59d3\u540d\u548c\u85aa\u6c34\u3002\u6211\u5011\u53ef\u4ee5\u5275\u5efa\u4e00\u500b\u8996\u5716\u4f86\u986f\u793a\u6240\u6709\u85aa\u6c34\u9ad8\u65bc 50000 \u7684\u54e1\u5de5\uff1a<\/p>\n<pre><code>CREATE VIEW high_salary_employees AS\nSELECT name, salary\nFROM employees\nWHERE salary &gt; 50000;<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e8%a6%96%e5%9c%96-LoJBFhIcCL\">\u4f7f\u7528\u8996\u5716<\/h2>\n<p>\u4e00\u65e6\u8996\u5716\u88ab\u5275\u5efa\uff0c\u6211\u5011\u53ef\u4ee5\u50cf\u67e5\u8a62\u666e\u901a\u8868\u683c\u4e00\u6a23\u67e5\u8a62\u8996\u5716\u3002\u4f8b\u5982\uff0c\u8981\u67e5\u8a62\u6240\u6709\u9ad8\u85aa\u54e1\u5de5\u7684\u59d3\u540d\u548c\u85aa\u6c34\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT * FROM high_salary_employees;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u6240\u6709\u85aa\u6c34\u9ad8\u65bc 50000 \u7684\u54e1\u5de5\u7684\u59d3\u540d\u548c\u85aa\u6c34\u3002<\/p>\n<h2 id=\"%e8%a6%96%e5%9c%96%e7%9a%84%e5%84%aa%e5%8b%a2-LoJBFhIcCL\">\u8996\u5716\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u7c21\u5316\u67e5\u8a62\uff1a<\/strong>\u8996\u5716\u53ef\u4ee5\u5c07\u8907\u96dc\u7684\u67e5\u8a62\u5c01\u88dd\u8d77\u4f86\uff0c\u4f7f\u7528\u8005\u53ea\u9700\u67e5\u8a62\u8996\u5716\u5373\u53ef\u7372\u5f97\u6240\u9700\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u5b89\u5168\u6027\uff1a<\/strong>\u901a\u904e\u8996\u5716\uff0c\u53ef\u4ee5\u9650\u5236\u7528\u6236\u5c0d\u5e95\u5c64\u8868\u683c\u7684\u8a2a\u554f\u6b0a\u9650\uff0c\u53ea\u5141\u8a31\u4ed6\u5011\u8a2a\u554f\u8996\u5716\u4e2d\u5b9a\u7fa9\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u8996\u5716\u53ef\u4ee5\u78ba\u4fdd\u7528\u6236\u7372\u5f97\u4e00\u81f4\u7684\u6578\u64da\u8996\u5716\uff0c\u7279\u5225\u662f\u5728\u591a\u500b\u7528\u6236\u540c\u6642\u8a2a\u554f\u8cc7\u6599\u5eab\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9b%b4%e6%96%b0%e8%a6%96%e5%9c%96-LoJBFhIcCL\">\u66f4\u65b0\u8996\u5716<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u8996\u5716\u662f\u53ef\u66f4\u65b0\u7684\uff0c\u9019\u610f\u5473\u8457\u4f60\u53ef\u4ee5\u901a\u904e\u8996\u5716\u4f86\u4fee\u6539\u5e95\u5c64\u8868\u683c\u7684\u6578\u64da\u3002\u7136\u800c\uff0c\u4e26\u975e\u6240\u6709\u7684\u8996\u5716\u90fd\u662f\u53ef\u66f4\u65b0\u7684\u3002\u4e00\u822c\u4f86\u8aaa\uff0c\u53ea\u6709\u7576\u8996\u5716\u6eff\u8db3\u67d0\u4e9b\u689d\u4ef6\u6642\uff0c\u624d\u53ef\u4ee5\u9032\u884c\u66f4\u65b0\u3002\u4f8b\u5982\uff0c\u8996\u5716\u5fc5\u9808\u57fa\u65bc\u55ae\u4e00\u8868\u683c\uff0c\u4e14\u4e0d\u5305\u542b\u805a\u5408\u51fd\u6578\u6216\u5206\u7d44\u3002<\/p>\n<p>\u8981\u66f4\u65b0\u8996\u5716\u4e2d\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>UPDATE view_name\nSET column1 = value1, column2 = value2, ...\nWHERE condition;<\/code><\/pre>\n<h2 id=\"%e5%88%aa%e9%99%a4%e8%a6%96%e5%9c%96-LoJBFhIcCL\">\u522a\u9664\u8996\u5716<\/h2>\n<p>\u5982\u679c\u4e0d\u518d\u9700\u8981\u67d0\u500b\u8996\u5716\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\u5c07\u5176\u522a\u9664\uff1a<\/p>\n<pre><code>DROP VIEW view_name;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u8981\u522a\u9664\u6211\u5011\u4e4b\u524d\u5275\u5efa\u7684 <code>high_salary_employees<\/code> \u8996\u5716\uff0c\u53ef\u4ee5\u57f7\u884c\uff1a<\/p>\n<pre><code>DROP VIEW high_salary_employees;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-LoJBFhIcCL\">\u7e3d\u7d50<\/h2>\n<p>SQLite \u7684\u8996\u5716\u529f\u80fd\u70ba\u8cc7\u6599\u5eab\u7ba1\u7406\u63d0\u4f9b\u4e86\u9748\u6d3b\u6027\u548c\u4fbf\u5229\u6027\u3002\u901a\u904e\u4f7f\u7528\u8996\u5716\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u7c21\u5316\u67e5\u8a62\u3001\u63d0\u9ad8\u6578\u64da\u5b89\u5168\u6027\u4e26\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u3002\u7121\u8ad6\u662f\u5728\u958b\u767c\u5c0f\u578b\u61c9\u7528\u9084\u662f\u5927\u578b\u7cfb\u7d71\u4e2d\uff0c\u8996\u5716\u90fd\u662f\u4e00\u500b\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u500b\u4eba\u9805\u76ee\u9084\u662f\u4f01\u696d\u61c9\u7528\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 SQLite \u4e2d\u5275\u5efa\u548c\u4f7f\u7528\u8996\u5716\uff08View\uff09\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\uff0c\u7c21\u5316\u8907\u96dc\u67e5\u8a62\u64cd\u4f5c\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-160713","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160713","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=160713"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160713\/revisions"}],"predecessor-version":[{"id":160714,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160713\/revisions\/160714"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160713"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}