{"id":166063,"date":"2024-11-05T15:33:38","date_gmt":"2024-11-05T07:33:38","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166063\/"},"modified":"2024-11-05T15:33:39","modified_gmt":"2024-11-05T07:33:39","slug":"%e5%bf%ab%e9%80%9f%e4%ba%86%e8%a7%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e5%88%aa%e9%99%a4sql%e6%93%8d%e4%bd%9c-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e5%88%aa%e9%99%a4sql","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166063\/","title":{"rendered":"\u5feb\u901f\u4e86\u89e3\u6578\u64da\u5eab\u8996\u5716\u522a\u9664SQL\u64cd\u4f5c (\u6578\u64da\u5eab\u8996\u5716\u522a\u9664sql)"},"content":{"rendered":"<h1 id=\"%e5%bf%ab%e9%80%9f%e4%ba%86%e8%a7%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e5%88%aa%e9%99%a4sql%e6%93%8d%e4%bd%9c-poFMIamsmW\">\u5feb\u901f\u4e86\u89e3\u6578\u64da\u5eab\u8996\u5716\u522a\u9664SQL\u64cd\u4f5c<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\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\u4f5c\u7528\u662f\u7c21\u5316\u6578\u64da\u7684\u67e5\u8a62\uff0c\u63d0\u4f9b\u4e00\u500b\u66f4\u6613\u65bc\u4f7f\u7528\u7684\u6578\u64da\u63a5\u53e3\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u5eab\u7684\u8b8a\u5316\uff0c\u53ef\u80fd\u9700\u8981\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u8996\u5716\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u522a\u9664\u6578\u64da\u5eab\u8996\u5716\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%ef%bc%9f-poFMIamsmW\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u8996\u5716\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u8996\u5716\u662f\u4e00\u7a2e\u865b\u64ec\u8868\u683c\uff0c\u5b83\u4e0d\u5132\u5b58\u6578\u64da\uff0c\u800c\u662f\u5132\u5b58\u67e5\u8a62\u3002\u8996\u5716\u53ef\u4ee5\u5f9e\u4e00\u500b\u6216\u591a\u500b\u8868\u683c\u4e2d\u9078\u53d6\u6578\u64da\uff0c\u4e26\u4e14\u53ef\u4ee5\u5305\u542b\u904e\u6ffe\u689d\u4ef6\u3001\u6392\u5e8f\u548c\u8a08\u7b97\u5b57\u6bb5\u3002\u4f7f\u7528\u8996\u5716\u7684\u597d\u8655\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u7c21\u5316\u8907\u96dc\u67e5\u8a62\uff1a\u7528\u6236\u53ef\u4ee5\u901a\u904e\u8996\u5716\u4f86\u7c21\u5316\u5c0d\u591a\u500b\u8868\u683c\u7684\u67e5\u8a62\u3002<\/li>\n<li>\u63d0\u9ad8\u5b89\u5168\u6027\uff1a\u901a\u904e\u8996\u5716\uff0c\u53ef\u4ee5\u9650\u5236\u7528\u6236\u5c0d\u5e95\u5c64\u8868\u683c\u7684\u76f4\u63a5\u8a2a\u554f\u3002<\/li>\n<li>\u6578\u64da\u62bd\u8c61\uff1a\u8996\u5716\u53ef\u4ee5\u63d0\u4f9b\u4e00\u500b\u7d71\u4e00\u7684\u6578\u64da\u63a5\u53e3\uff0c\u96b1\u85cf\u5e95\u5c64\u6578\u64da\u7d50\u69cb\u7684\u8907\u96dc\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a6%96%e5%9c%96%e7%9a%84sql%e8%aa%9e%e6%b3%95-poFMIamsmW\">\u522a\u9664\u6578\u64da\u5eab\u8996\u5716\u7684SQL\u8a9e\u6cd5<\/h2>\n<p>\u522a\u9664\u8996\u5716\u7684SQL\u8a9e\u6cd5\u76f8\u5c0d\u7c21\u55ae\uff0c\u901a\u5e38\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>DROP VIEW [IF EXISTS] view_name;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>view_name<\/code>\u662f\u60a8\u8981\u522a\u9664\u7684\u8996\u5716\u7684\u540d\u7a31\u3002\u9078\u64c7\u6027\u5730\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528<code>IF EXISTS<\/code>\u4f86\u907f\u514d\u5728\u8996\u5716\u4e0d\u5b58\u5728\u6642\u51fa\u73fe\u932f\u8aa4\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%88%aa%e9%99%a4%e8%a6%96%e5%9c%96-poFMIamsmW\">\u793a\u4f8b\uff1a\u522a\u9664\u8996\u5716<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employee_view<\/code>\u7684\u8996\u5716\uff0c\u8a72\u8996\u5716\u986f\u793a\u4e86\u6240\u6709\u54e1\u5de5\u7684\u57fa\u672c\u4fe1\u606f\u3002\u5982\u679c\u6211\u5011\u6c7a\u5b9a\u4e0d\u518d\u9700\u8981\u9019\u500b\u8996\u5716\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u522a\u9664\u5b83\uff1a<\/p>\n<pre><code>DROP VIEW IF EXISTS employee_view;<\/code><\/pre>\n<p>\u57f7\u884c\u9019\u689d\u8a9e\u53e5\u5f8c\uff0c<code>employee_view<\/code>\u5c07\u88ab\u522a\u9664\uff0c\u4e26\u4e14\u4e0d\u6703\u518d\u51fa\u73fe\u5728\u6578\u64da\u5eab\u4e2d\u3002<\/p>\n<h2 id=\"%e5%88%aa%e9%99%a4%e8%a6%96%e5%9c%96%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-poFMIamsmW\">\u522a\u9664\u8996\u5716\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u522a\u9664\u8996\u5716\u4e4b\u524d\uff0c\u60a8\u61c9\u8a72\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u4f9d\u8cf4\u6027\uff1a<\/strong>\u78ba\u4fdd\u6c92\u6709\u5176\u4ed6\u67e5\u8a62\u6216\u61c9\u7528\u7a0b\u5e8f\u4f9d\u8cf4\u65bc\u8a72\u8996\u5716\u3002\u5982\u679c\u6709\uff0c\u522a\u9664\u8996\u5716\u53ef\u80fd\u6703\u5c0e\u81f4\u932f\u8aa4\u3002<\/li>\n<li><strong>\u5099\u4efd\uff1a<\/strong>\u5728\u522a\u9664\u8996\u5716\u4e4b\u524d\uff0c\u5efa\u8b70\u5099\u4efd\u76f8\u95dc\u7684\u67e5\u8a62\u6216\u6578\u64da\uff0c\u4ee5\u9632\u672a\u4f86\u9700\u8981\u6062\u5fa9\u3002<\/li>\n<li><strong>\u6b0a\u9650\uff1a<\/strong>\u78ba\u4fdd\u60a8\u64c1\u6709\u8db3\u5920\u7684\u6b0a\u9650\u4f86\u522a\u9664\u8996\u5716\u3002\u901a\u5e38\uff0c\u53ea\u6709\u64c1\u6709\u8005\u6216\u5177\u6709\u76f8\u61c9\u6b0a\u9650\u7684\u7528\u6236\u624d\u80fd\u57f7\u884c\u6b64\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-poFMIamsmW\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u8996\u5716\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u7c21\u5316\u6578\u64da\u67e5\u8a62\u548c\u63d0\u9ad8\u5b89\u5168\u6027\u3002\u7136\u800c\uff0c\u96a8\u8457\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u5316\uff0c\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u8996\u5716\u662f\u5fc5\u8981\u7684\u3002\u901a\u904e\u4f7f\u7528<code>DROP VIEW<\/code>\u8a9e\u53e5\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u8996\u5716\u3002\u8a18\u4f4f\u5728\u522a\u9664\u4e4b\u524d\u8003\u616e\u4f9d\u8cf4\u6027\u548c\u6b0a\u9650\u554f\u984c\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u5b89\u5168\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u76f8\u95dc\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\u3002\u6211\u5011\u63d0\u4f9b\u5404\u7a2e<em><a href=\"https:\/\/server.hk\">VPS<\/a><\/em>\u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u60a8\u7684\u6578\u64da\u548c\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u4e86\u89e3\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u522a\u9664\u8996\u5716\u7684SQL\u64cd\u4f5c\uff0c\u638c\u63e1\u57fa\u672c\u8a9e\u6cd5\u8207\u6ce8\u610f\u4e8b\u9805\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\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-166063","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166063","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=166063"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166063\/revisions"}],"predecessor-version":[{"id":166064,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166063\/revisions\/166064"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166063"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166063"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}