{"id":3722,"date":"2025-05-18T23:00:42","date_gmt":"2025-05-18T15:00:42","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3722"},"modified":"2025-05-18T23:00:42","modified_gmt":"2025-05-18T15:00:42","slug":"mysql-%e4%b8%ad%e4%bd%bf%e7%94%a8%e8%a7%86%e5%9b%be%e7%9a%84%e4%bc%98%e7%82%b9","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/05\/18\/mysql-%e4%b8%ad%e4%bd%bf%e7%94%a8%e8%a7%86%e5%9b%be%e7%9a%84%e4%bc%98%e7%82%b9\/","title":{"rendered":"MySQL \u4e2d\u4f7f\u7528\u89c6\u56fe\u7684\u4f18\u70b9"},"content":{"rendered":"\n<p>\u5728 MySQL \u4e2d\uff0c<strong>\u89c6\u56fe\uff08View\uff09<\/strong> \u662f\u4e00\u79cd\u865a\u62df\u8868\uff0c\u5b83\u57fa\u4e8e SQL \u67e5\u8be2\u7684\u7ed3\u679c\u6784\u5efa\uff0c\u4e0d\u76f4\u63a5\u5b58\u50a8\u6570\u636e\uff0c\u4f46\u5728\u5f88\u591a\u573a\u666f\u4e0b\u80fd\u663e\u8457\u7b80\u5316\u67e5\u8be2\u3001\u63d0\u9ad8\u5b89\u5168\u6027\u548c\u4ee3\u7801\u53ef\u8bfb\u6027\u3002\u4e0b\u9762\u662f\u89c6\u56fe\u7684\u4e3b\u8981\u4f18\u70b9\uff1a<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. \u7b80\u5316\u590d\u6742\u67e5\u8be2<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5c01\u88c5\u590d\u6742\u903b\u8f91<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u5c06\u590d\u6742\u7684 <code>JOIN<\/code>\u3001<code>GROUP BY<\/code>\u3001<code>UNION<\/code> \u7b49\u67e5\u8be2\u5c01\u88c5\u5728\u89c6\u56fe\u4e2d\uff0c\u7b80\u5316\u5e94\u7528\u5c42\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u51cf\u5c11\u4ee3\u7801\u91cd\u590d<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c06\u5e38\u7528\u7684\u67e5\u8be2\u903b\u8f91\u62bd\u8c61\u4e3a\u89c6\u56fe\uff0c\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u964d\u4f4e\u5f00\u53d1\u6210\u672c<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5f00\u53d1\u4eba\u5458\u53ea\u9700\u8c03\u7528\u89c6\u56fe\uff0c\u800c\u4e0d\u5fc5\u5173\u5fc3\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u590d\u6742\u8ba2\u5355\u7edf\u8ba1\u89c6\u56fe\nCREATE VIEW order_summary AS\nSELECT customer_id, \n       COUNT(order_id) AS total_orders, \n       SUM(amount) AS total_revenue\nFROM orders\nWHERE order_date &gt; DATE_SUB(CURDATE(), INTERVAL 1 YEAR)\nGROUP BY customer_id;<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. \u589e\u5f3a\u6570\u636e\u5b89\u5168\u6027<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5217\u7ea7\u6743\u9650\u63a7\u5236<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u89c6\u56fe\u53ef\u4ee5\u9690\u85cf\u654f\u611f\u6570\u636e\uff0c\u53ea\u66b4\u9732\u5fc5\u8981\u7684\u5b57\u6bb5\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u884c\u7ea7\u6743\u9650\u63a7\u5236<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u901a\u8fc7\u89c6\u56fe\u9650\u5236\u7528\u6237\u8bbf\u95ee\u7684\u884c\uff0c\u63d0\u9ad8\u6570\u636e\u5b89\u5168\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u903b\u8f91\u9694\u79bb<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c06\u654f\u611f\u6570\u636e\u9694\u79bb\u5728\u57fa\u7840\u8868\u4e2d\uff0c\u51cf\u5c11\u76f4\u63a5\u8bbf\u95ee\u98ce\u9669\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u53ea\u5141\u8bb8\u67e5\u770b\u90e8\u5206\u5ba2\u6237\u4fe1\u606f\nCREATE VIEW customer_public AS\nSELECT customer_id, customer_name, join_date\nFROM customers;<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. \u63d0\u9ad8\u6570\u636e\u4e00\u81f4\u6027<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u96c6\u4e2d\u7ba1\u7406<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u89c6\u56fe\u5c06\u4e1a\u52a1\u903b\u8f91\u96c6\u4e2d\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u51cf\u5c11\u5206\u6563\u7684\u67e5\u8be2\u903b\u8f91\u5e26\u6765\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u95ee\u9898\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u4fdd\u8bc1\u89c6\u56fe\u4e00\u81f4\u6027<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u786e\u4fdd\u4e0d\u540c\u5e94\u7528\u8bbf\u95ee\u76f8\u540c\u7684\u6570\u636e\u89c6\u56fe\uff0c\u63d0\u9ad8\u6570\u636e\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u51cf\u5c11\u8bef\u64cd\u4f5c<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u907f\u514d\u5f00\u53d1\u4eba\u5458\u76f4\u63a5\u8bbf\u95ee\u5e95\u5c42\u6570\u636e\u8868\uff0c\u51cf\u5c11\u6570\u636e\u635f\u574f\u98ce\u9669\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. \u63d0\u5347\u4ee3\u7801\u91cd\u7528\u6027<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7edf\u4e00\u63a5\u53e3<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u89c6\u56fe\u53ef\u4ee5\u4f5c\u4e3a\u6570\u636e\u5e93\u7684\u201c\u63a5\u53e3\u201d\uff0c\u5c01\u88c5\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u63d0\u9ad8\u91cd\u7528\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u51cf\u5c11\u7ef4\u62a4\u6210\u672c<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u4fee\u6539\u89c6\u56fe\u5b9a\u4e49\u5373\u53ef\u5b9e\u73b0\u5168\u5c40\u903b\u8f91\u8c03\u6574\uff0c\u65e0\u9700\u4fee\u6539\u591a\u4e2a\u5e94\u7528\u7a0b\u5e8f\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u51cf\u5c11\u5e94\u7528\u5c42\u903b\u8f91<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u5c06\u6570\u636e\u5904\u7406\u903b\u8f91\u4e0b\u63a8\u5230\u6570\u636e\u5e93\uff0c\u51cf\u5c11\u5e94\u7528\u5c42\u8d1f\u62c5\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>5. \u63d0\u9ad8\u67e5\u8be2\u6548\u7387\uff08\u7279\u5b9a\u573a\u666f\uff09<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u51cf\u5c11 I\/O \u5f00\u9500<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u89c6\u56fe\u7684\u5b9a\u4e49\u5305\u542b\u6709\u6548\u7684\u7d22\u5f15\uff0cMySQL \u53ef\u4ee5\u4f18\u5316\u67e5\u8be2\u8def\u5f84\uff0c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u51cf\u5c11\u7f51\u7edc\u5f00\u9500<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c06\u590d\u6742\u7684\u67e5\u8be2\u903b\u8f91\u4e0b\u63a8\u5230\u6570\u636e\u5e93\u4e2d\uff0c\u51cf\u5c11\u7f51\u7edc\u6570\u636e\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5e76\u884c\u67e5\u8be2\u4f18\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0cMySQL \u53ef\u4ee5\u5e76\u884c\u5904\u7406\u89c6\u56fe\u67e5\u8be2\uff0c\u63d0\u9ad8\u6548\u7387\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>6. \u4fbf\u4e8e\u6570\u636e\u805a\u5408\u548c\u7edf\u8ba1\u5206\u6790<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u636e\u6c47\u603b<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u5feb\u901f\u6784\u5efa\u7edf\u8ba1\u89c6\u56fe\uff0c\u5b9e\u73b0\u5b9e\u65f6\u6570\u636e\u5206\u6790\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u65f6\u95f4\u5e8f\u5217\u5206\u6790<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u65b9\u4fbf\u8fdb\u884c\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u5206\u6790\u548c\u8d8b\u52bf\u9884\u6d4b\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6570\u636e\u6574\u5408<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c06\u591a\u4e2a\u6570\u636e\u6e90\u6574\u5408\u5728\u4e00\u8d77\uff0c\u63d0\u4f9b\u7edf\u4e00\u7684\u6570\u636e\u89c6\u89d2\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u6708\u5ea6\u9500\u552e\u6c47\u603b\u89c6\u56fe\nCREATE VIEW monthly_sales AS\nSELECT YEAR(order_date) AS year, \n       MONTH(order_date) AS month, \n       COUNT(order_id) AS total_orders, \n       SUM(amount) AS total_revenue\nFROM orders\nGROUP BY YEAR(order_date), MONTH(order_date);<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>7. \u7b80\u5316\u6743\u9650\u7ba1\u7406<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u57fa\u4e8e\u89d2\u8272\u7684\u6570\u636e\u9694\u79bb<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u6839\u636e\u7528\u6237\u89d2\u8272\u521b\u5efa\u4e0d\u540c\u7684\u89c6\u56fe\uff0c\u9650\u5236\u6570\u636e\u8bbf\u95ee\u8303\u56f4\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u51cf\u5c11\u6743\u9650\u590d\u6742\u5ea6<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c06\u590d\u6742\u7684\u6743\u9650\u903b\u8f91\u5c01\u88c5\u5728\u89c6\u56fe\u4e2d\uff0c\u51cf\u5c11\u6743\u9650\u7ba1\u7406\u96be\u5ea6\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u589e\u5f3a\u5ba1\u8ba1\u80fd\u529b<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u66f4\u7cbe\u7ec6\u5730\u63a7\u5236\u548c\u5ba1\u8ba1\u7528\u6237\u7684\u6570\u636e\u8bbf\u95ee\u884c\u4e3a\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>8. \u4fbf\u4e8e\u6570\u636e\u5e93\u91cd\u6784\u548c\u8fc1\u79fb<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u636e\u6a21\u578b\u5c01\u88c5<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u89c6\u56fe\u53ef\u4ee5\u5c4f\u853d\u5e95\u5c42\u6570\u636e\u6a21\u578b\u7684\u53d8\u5316\uff0c\u51cf\u5c11\u5e94\u7528\u5c42\u7684\u6539\u52a8\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6570\u636e\u6a21\u578b\u62bd\u8c61<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c06\u590d\u6742\u7684 ER \u6a21\u578b\u62bd\u8c61\u4e3a\u66f4\u7b26\u5408\u4e1a\u52a1\u9700\u6c42\u7684\u903b\u8f91\u6a21\u578b\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u7248\u672c\u517c\u5bb9\u6027<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u5728\u4e0d\u4fee\u6539\u8868\u7ed3\u6784\u7684\u60c5\u51b5\u4e0b\uff0c\u4e3a\u65b0\u529f\u80fd\u63d0\u4f9b\u517c\u5bb9\u89c6\u56fe\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">9. <strong>\u89c6\u56fe\u7684\u9650\u5236\u4e0e\u6ce8\u610f\u4e8b\u9879<\/strong><\/h3>\n\n\n\n<p>\u5c3d\u7ba1\u89c6\u56fe\u6709\u5f88\u591a\u4f18\u70b9\uff0c\u4f46\u4e5f\u6709\u4e00\u4e9b\u9650\u5236\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7f3a\u4e4f\u72ec\u7acb\u7d22\u5f15<\/strong>\uff08\u65e0\u6cd5\u76f4\u63a5\u52a0\u901f\u67e5\u8be2\uff09<\/li>\n\n\n\n<li><strong>\u89c6\u56fe\u5b9a\u4e49\u590d\u6742\u65f6\u6027\u80fd\u8f83\u5dee<\/strong><\/li>\n\n\n\n<li><strong>\u65e0\u6cd5\u7f13\u5b58<\/strong>\uff08\u4e0d\u50cf\u7269\u5316\u89c6\u56fe\uff09<\/li>\n\n\n\n<li><strong>\u8de8\u5e93\u8bbf\u95ee\u53d7\u9650<\/strong><\/li>\n\n\n\n<li><strong>\u9012\u5f52\u8c03\u7528\u95ee\u9898<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 MySQL \u4e2d\uff0c\u89c6\u56fe\uff08View\uff09 \u662f\u4e00\u79cd\u865a\u62df\u8868\uff0c\u5b83\u57fa\u4e8e SQL \u67e5\u8be2\u7684\u7ed3\u679c\u6784\u5efa\uff0c\u4e0d\u76f4\u63a5\u5b58\u50a8\u6570\u636e\uff0c\u4f46\u5728\u5f88\u591a\u573a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3723,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-3722","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mysql"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3722","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3722"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3722\/revisions"}],"predecessor-version":[{"id":3724,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3722\/revisions\/3724"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3723"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}