{"id":5906,"date":"2024-11-14T11:25:42","date_gmt":"2024-11-14T03:25:42","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5906\/"},"modified":"2024-11-14T11:25:42","modified_gmt":"2024-11-14T03:25:42","slug":"sql%e8%a7%86%e5%9b%be%e6%80%8e%e4%b9%88%e5%86%99","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5906\/","title":{"rendered":"sql\u89c6\u56fe\u600e\u4e48\u5199"},"content":{"rendered":"<blockquote><p>\n  sql\u89c6\u56fe\u662f\u4e00\u79cd\u865a\u62df\u8868\uff0c\u57fa\u4e8e\u5e95\u5c42\u8868\u6570\u636e\uff0c\u7528\u4e8e\u7b80\u5316\u67e5\u8be2\u548c\u6570\u636e\u5904\u7406\u3002\u521b\u5efa\u89c6\u56fe\u7684\u6b65\u9aa4\u5305\u62ec\uff1a\u786e\u5b9a\u57fa\u7840\u8868\u7f16\u5199select\u8bed\u53e5\u4f7f\u7528create view\u8bed\u53e5\u521b\u5efa\u89c6\u56fe\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/03\/2024060322064391069.jpg\" class=\"aligncenter\" title=\"sql\u89c6\u56fe\u600e\u4e48\u5199\u63d2\u56fe\" alt=\"sql\u89c6\u56fe\u600e\u4e48\u5199\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL\u89c6\u56fe\u521b\u5efa\u6307\u5357<\/strong><\/p>\n<p><strong>\u4ec0\u4e48\u662fSQL\u89c6\u56fe\uff1f<\/strong><\/p>\n<p>SQL\u89c6\u56fe\u662f\u4e00\u79cd\u865a\u62df\u8868\uff0c\u5b83\u57fa\u4e8e\u4e00\u4e2a\u6216\u591a\u4e2a\u57fa\u7840\u8868\u4e2d\u7684\u6570\u636e\uff0c\u4f46\u672c\u8eab\u5e76\u4e0d\u5b58\u50a8\u5b9e\u9645\u6570\u636e\u3002\u5b83\u4e3a\u7528\u6237\u63d0\u4f9b\u4e00\u79cd\u65b9\u5f0f\uff0c\u901a\u8fc7\u4e00\u4e2a\u7b80\u5316\u7684\u67e5\u8be2\u6765\u8bbf\u95ee\u548c\u5904\u7406\u5e95\u5c42\u6570\u636e\u3002<\/p>\n<p><strong>\u5982\u4f55\u521b\u5efaSQL\u89c6\u56fe\uff1f<\/strong><\/p>\n<p>\u8981\u521b\u5efaSQL\u89c6\u56fe\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n<pre>CREATE VIEW &lt;\u89c6\u56fe\u540d\u79f0&gt; AS &lt;\u9009\u62e9\u8bed\u53e5&gt;;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u662f\u60a8\u8981\u521b\u5efa\u7684\u89c6\u56fe\u7684\u540d\u79f0\u3002\u662f\u4ece\u5e95\u5c42\u8868\u4e2d\u9009\u62e9\u6570\u636e\u7684\u67e5\u8be2\uff0c\u5c31\u50cf\u5728\u5e38\u89c4SELECT\u8bed\u53e5\u4e2d\u4e00\u6837\u3002<\/p>\n<p><strong>\u4e3a\u4ec0\u4e48\u4f7f\u7528SQL\u89c6\u56fe\uff1f<\/strong><\/p>\n<p>\u521b\u5efaSQL\u89c6\u56fe\u6709\u4ee5\u4e0b\u51e0\u4e2a\u539f\u56e0\uff1a<\/p>\n<ul>\n<li> <strong>\u6570\u636e\u9690\u85cf\uff1a<\/strong>\u9690\u85cf\u5e95\u5c42\u8868\u4e2d\u7684\u590d\u6742\u67e5\u8be2\u6216\u8fde\u63a5\u3002<\/li>\n<li> <strong>\u6570\u636e\u5b89\u5168\uff1a<\/strong>\u4ec5\u6388\u4e88\u5bf9\u89c6\u56fe\u7684\u8bbf\u95ee\u6743\u9650\uff0c\u9650\u5236\u5bf9\u7684\u8bbf\u95ee\u3002<\/li>\n<li> <strong>\u6027\u80fd\u4f18\u5316\uff1a<\/strong>\u901a\u8fc7\u7f13\u5b58\u7ecf\u5e38\u4f7f\u7528\u7684\u67e5\u8be2\u7ed3\u679c\u6765\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li> <strong>\u7b80\u5316\u67e5\u8be2\uff1a<\/strong>\u4e3a\u7528\u6237\u63d0\u4f9b\u4e00\u4e2a\u6613\u4e8e\u4f7f\u7528\u7684\u754c\u9762\u6765\u8bbf\u95ee\u6570\u636e\u3002<\/li>\n<li> <strong>\u6570\u636e\u5efa\u6a21\uff1a<\/strong>\u521b\u5efa\u903b\u8f91\u6570\u636e\u7ed3\u6784\uff0c\u4ee5\u4f9b\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<p><strong>\u521b\u5efa\u89c6\u56fe\u7684\u6b65\u9aa4\uff1a<\/strong><\/p>\n<ol>\n<li> <strong>\u786e\u5b9a\u57fa\u7840\u8868\uff1a<\/strong>\u786e\u5b9a\u8981\u5305\u542b\u5728\u89c6\u56fe\u4e2d\u7684\u8868\u3002<\/li>\n<li> <strong>\u7f16\u5199SELECT\u8bed\u53e5\uff1a<\/strong>\u7f16\u5199\u4e00\u4e2a\u67e5\u8be2\uff0c\u4ece\u57fa\u7840\u8868\u4e2d\u9009\u62e9\u6240\u9700\u7684\u6570\u636e\u3002<\/li>\n<li> <strong>\u521b\u5efa\u89c6\u56fe\uff1a<\/strong>\u4f7f\u7528CREATE VIEW\u8bed\u53e5\u521b\u5efa\u89c6\u56fe\uff0c\u6307\u5b9a\u89c6\u56fe\u540d\u79f0\u548cSELECT\u8bed\u53e5\u3002<\/li>\n<\/ol>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u57fa\u7840\u8868\uff1a<\/p>\n<pre>CREATE TABLE Customers (\n  id INT PRIMARY KEY,\n  name VARCHAR(50),\n  email VARCHAR(50)\n);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8981\u521b\u5efa\u540d\u4e3aCustomerView\u7684\u89c6\u56fe\uff0c\u4ec5\u663e\u793aid\u548cname\u5217\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a<\/p>\n<pre>CREATE VIEW CustomerView AS\nSELECT id, name\nFROM Customers;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528CustomerView\u89c6\u56fe\u6765\u8bbf\u95ee\u548c\u5904\u7406\u6570\u636e\uff0c\u800c\u65e0\u9700\u76f4\u63a5\u67e5\u8be2Customers\u8868\u3002<\/p>\n<pre>SELECT * FROM CustomerView;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u89c6\u56fe\u600e\u4e48\u5199\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>sql\u89c6\u56fe\u662f\u4e00\u79cd\u865a\u62df\u8868\uff0c\u57fa\u4e8e\u5e95\u5c42\u8868\u6570\u636e\uff0c\u7528\u4e8e\u7b80\u5316\u67e5\u8be2\u548c\u6570\u636e\u5904\u7406\u3002\u521b\u5efa\u89c6\u56fe\u7684\u6b65\u9aa4\u5305\u62ec\uff1a\u786e\u5b9a\u57fa\u7840\u8868\u7f16\u5199select\u8bed\u53e5\u4f7f\u7528create view\u8bed\u53e5\u521b\u5efa\u89c6\u56fe SQL\u89c6\u56fe\u521b\u5efa\u6307\u5357 \u4ec0\u4e48\u662fSQL\u89c6\u56fe\uff1f SQL\u89c6\u56fe\u662f\u4e00\u79cd\u865a\u62df\u8868\uff0c\u5b83\u57fa\u4e8e\u4e00\u4e2a\u6216\u591a\u4e2a\u57fa\u7840\u8868\u4e2d\u7684\u6570\u636e\uff0c\u4f46\u672c\u8eab\u5e76\u4e0d\u5b58\u50a8\u5b9e\u9645\u6570\u636e\u3002\u5b83\u4e3a\u7528\u6237\u63d0\u4f9b\u4e00\u79cd\u65b9\u5f0f\uff0c\u901a\u8fc7\u4e00\u4e2a\u7b80\u5316\u7684\u67e5\u8be2\u6765\u8bbf\u95ee\u548c\u5904\u7406\u5e95\u5c42\u6570\u636e\u3002 \u5982\u4f55\u521b\u5efaSQL\u89c6\u56fe\uff1f \u8981\u521b\u5efaSQL\u89c6\u56fe\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a CREATE VIEW &lt;\u89c6\u56fe\u540d\u79f0&gt; AS &lt;\u9009\u62e9\u8bed\u53e5&gt;; \u767b\u5f55\u540e\u590d\u5236 \u662f\u60a8\u8981\u521b\u5efa\u7684\u89c6\u56fe\u7684\u540d\u79f0\u3002\u662f\u4ece\u5e95\u5c42\u8868\u4e2d\u9009\u62e9\u6570\u636e\u7684\u67e5\u8be2\uff0c\u5c31\u50cf\u5728\u5e38\u89c4SELECT\u8bed\u53e5\u4e2d\u4e00\u6837\u3002 \u4e3a\u4ec0\u4e48\u4f7f\u7528SQL\u89c6\u56fe\uff1f \u521b\u5efaSQL\u89c6\u56fe\u6709\u4ee5\u4e0b\u51e0\u4e2a\u539f\u56e0\uff1a \u6570\u636e\u9690\u85cf\uff1a\u9690\u85cf\u5e95\u5c42\u8868\u4e2d\u7684\u590d\u6742\u67e5\u8be2\u6216\u8fde\u63a5\u3002 \u6570\u636e\u5b89\u5168\uff1a\u4ec5\u6388\u4e88\u5bf9\u89c6\u56fe\u7684\u8bbf\u95ee\u6743\u9650\uff0c\u9650\u5236\u5bf9\u7684\u8bbf\u95ee\u3002 \u6027\u80fd\u4f18\u5316\uff1a\u901a\u8fc7\u7f13\u5b58\u7ecf\u5e38\u4f7f\u7528\u7684\u67e5\u8be2\u7ed3\u679c\u6765\u63d0\u9ad8\u6027\u80fd\u3002 \u7b80\u5316\u67e5\u8be2\uff1a\u4e3a\u7528\u6237\u63d0\u4f9b\u4e00\u4e2a\u6613\u4e8e\u4f7f\u7528\u7684\u754c\u9762\u6765\u8bbf\u95ee\u6570\u636e\u3002 \u6570\u636e\u5efa\u6a21\uff1a\u521b\u5efa\u903b\u8f91\u6570\u636e\u7ed3\u6784\uff0c\u4ee5\u4f9b\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u3002 \u521b\u5efa\u89c6\u56fe\u7684\u6b65\u9aa4\uff1a \u786e\u5b9a\u57fa\u7840\u8868\uff1a\u786e\u5b9a\u8981\u5305\u542b\u5728\u89c6\u56fe\u4e2d\u7684\u8868\u3002 \u7f16\u5199SELECT\u8bed\u53e5\uff1a\u7f16\u5199\u4e00\u4e2a\u67e5\u8be2\uff0c\u4ece\u57fa\u7840\u8868\u4e2d\u9009\u62e9\u6240\u9700\u7684\u6570\u636e\u3002 \u521b\u5efa\u89c6\u56fe\uff1a\u4f7f\u7528CREATE VIEW\u8bed\u53e5\u521b\u5efa\u89c6\u56fe\uff0c\u6307\u5b9a\u89c6\u56fe\u540d\u79f0\u548cSELECT\u8bed\u53e5\u3002 \u793a\u4f8b\uff1a \u8003\u8651\u4ee5\u4e0b\u57fa\u7840\u8868\uff1a CREATE TABLE Customers ( id INT PRIMARY KEY, name VARCHAR(50), email VARCHAR(50) ); \u767b\u5f55\u540e\u590d\u5236 \u8981\u521b\u5efa\u540d\u4e3aCustomerView\u7684\u89c6\u56fe\uff0c\u4ec5\u663e\u793aid\u548cname\u5217\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a CREATE VIEW CustomerView AS SELECT id, name FROM Customers; \u767b\u5f55\u540e\u590d\u5236 \u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528CustomerView\u89c6\u56fe\u6765\u8bbf\u95ee\u548c\u5904\u7406\u6570\u636e\uff0c\u800c\u65e0\u9700\u76f4\u63a5\u67e5\u8be2Customers\u8868\u3002 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-5906","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5906","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=5906"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5906\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}