{"id":76094,"date":"2024-10-16T03:48:16","date_gmt":"2024-10-15T19:48:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76094\/"},"modified":"2024-10-16T03:48:16","modified_gmt":"2024-10-15T19:48:16","slug":"mysql%e8%87%a8%e6%99%82%e8%a1%a8%e4%b8%ad%e7%9a%84sql%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76094\/","title":{"rendered":"MySQL\u81e8\u6642\u8868\u4e2d\u7684SQL\u4ee3\u78bc\u793a\u4f8b"},"content":{"rendered":"<h1 id=\"mysql%e8%87%a8%e6%99%82%e8%a1%a8%e4%b8%ad%e7%9a%84sql%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-UdaNsuyWqD\">MySQL\u81e8\u6642\u8868\u4e2d\u7684SQL\u4ee3\u78bc\u793a\u4f8b<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u81e8\u6642\u8868\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\u3002MySQL\u63d0\u4f9b\u4e86\u81e8\u6642\u8868\u7684\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u5728\u6703\u8a71\u671f\u9593\u5275\u5efa\u548c\u4f7f\u7528\u8868\u683c\uff0c\u9019\u4e9b\u8868\u683c\u5728\u6703\u8a71\u7d50\u675f\u5f8c\u6703\u81ea\u52d5\u522a\u9664\u3002\u9019\u4f7f\u5f97\u81e8\u6642\u8868\u7279\u5225\u9069\u5408\u65bc\u9700\u8981\u81e8\u6642\u5b58\u5132\u6578\u64da\u7684\u60c5\u6cc1\uff0c\u4f8b\u5982\u5728\u8907\u96dc\u67e5\u8a62\u4e2d\u9032\u884c\u4e2d\u9593\u8a08\u7b97\u6216\u6578\u64da\u8655\u7406\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%87%a8%e6%99%82%e8%a1%a8%ef%bc%9f-UdaNsuyWqD\">\u4ec0\u9ebc\u662f\u81e8\u6642\u8868\uff1f<\/h2>\n<p>\u81e8\u6642\u8868\u662fMySQL\u4e2d\u4e00\u7a2e\u7279\u6b8a\u7684\u8868\u683c\uff0c\u8207\u666e\u901a\u8868\u683c\u76f8\u6bd4\uff0c\u5b83\u7684\u751f\u547d\u9031\u671f\u50c5\u9650\u65bc\u7576\u524d\u7684\u6578\u64da\u5eab\u6703\u8a71\u3002\u7576\u6703\u8a71\u7d50\u675f\u6642\uff0c\u81e8\u6642\u8868\u6703\u81ea\u52d5\u88ab\u522a\u9664\u3002\u9019\u610f\u5473\u8457\u81e8\u6642\u8868\u4e0d\u6703\u5f71\u97ff\u5176\u4ed6\u7528\u6236\u7684\u6578\u64da\uff0c\u4e26\u4e14\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u4e2d\u9593\u7d50\u679c\u6216\u9032\u884c\u6578\u64da\u8655\u7406\u3002<\/p>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e8%87%a8%e6%99%82%e8%a1%a8-UdaNsuyWqD\">\u5275\u5efa\u81e8\u6642\u8868<\/h2>\n<p>\u5275\u5efa\u81e8\u6642\u8868\u7684\u8a9e\u6cd5\u8207\u5275\u5efa\u666e\u901a\u8868\u7684\u8a9e\u6cd5\u76f8\u4f3c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efa\u81e8\u6642\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TEMPORARY TABLE temp_sales (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    product_name VARCHAR(100),\n    quantity INT,\n    price DECIMAL(10, 2)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba <code>temp_sales<\/code> \u7684\u81e8\u6642\u8868\uff0c\u8a72\u8868\u5305\u542b\u56db\u500b\u5b57\u6bb5\uff1a<code>id<\/code>\u3001<code>product_name<\/code>\u3001<code>quantity<\/code> \u548c <code>price<\/code>\u3002<\/p>\n<h2 id=\"%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a%e5%88%b0%e8%87%a8%e6%99%82%e8%a1%a8-UdaNsuyWqD\">\u63d2\u5165\u6578\u64da\u5230\u81e8\u6642\u8868<\/h2>\n<p>\u4e00\u65e6\u5275\u5efa\u4e86\u81e8\u6642\u8868\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>INSERT<\/code> \u8a9e\u53e5\u5c07\u6578\u64da\u63d2\u5165\u5230\u81e8\u6642\u8868\u4e2d\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u63d2\u5165\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>INSERT INTO temp_sales (product_name, quantity, price) VALUES\n('\u7522\u54c1A', 10, 100.00),\n('\u7522\u54c1B', 5, 200.00),\n('\u7522\u54c1C', 20, 50.00);<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u4e09\u500b\u7522\u54c1\u7684\u92b7\u552e\u6578\u64da\u63d2\u5165\u5230 <code>temp_sales<\/code> \u81e8\u6642\u8868\u4e2d\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e8%87%a8%e6%99%82%e8%a1%a8%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a-UdaNsuyWqD\">\u67e5\u8a62\u81e8\u6642\u8868\u4e2d\u7684\u6578\u64da<\/h2>\n<p>\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>SELECT<\/code> \u8a9e\u53e5\u4f86\u67e5\u8a62\u81e8\u6642\u8868\u4e2d\u7684\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM temp_sales;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de <code>temp_sales<\/code> \u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e8%87%a8%e6%99%82%e8%a1%a8%e9%80%b2%e8%a1%8c%e8%a4%87%e9%9b%9c%e6%9f%a5%e8%a9%a2-UdaNsuyWqD\">\u4f7f\u7528\u81e8\u6642\u8868\u9032\u884c\u8907\u96dc\u67e5\u8a62<\/h2>\n<p>\u81e8\u6642\u8868\u7279\u5225\u9069\u5408\u7528\u65bc\u8907\u96dc\u67e5\u8a62\u7684\u4e2d\u9593\u7d50\u679c\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u81e8\u6642\u8868\u4f86\u8a08\u7b97\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u984d\uff1a<\/p>\n<pre><code>CREATE TEMPORARY TABLE temp_total_sales AS\nSELECT product_name, SUM(quantity * price) AS total_sales\nFROM temp_sales\nGROUP BY product_name;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5275\u5efa\u4e86\u4e00\u500b\u65b0\u7684\u81e8\u6642\u8868 <code>temp_total_sales<\/code>\uff0c\u8a72\u8868\u5305\u542b\u6bcf\u500b\u7522\u54c1\u7684\u7e3d\u92b7\u552e\u984d\u3002<\/p>\n<h2 id=\"%e5%88%aa%e9%99%a4%e8%87%a8%e6%99%82%e8%a1%a8-UdaNsuyWqD\">\u522a\u9664\u81e8\u6642\u8868<\/h2>\n<p>\u96d6\u7136\u81e8\u6642\u8868\u5728\u6703\u8a71\u7d50\u675f\u6642\u6703\u81ea\u52d5\u522a\u9664\uff0c\u4f46\u7528\u6236\u4e5f\u53ef\u4ee5\u624b\u52d5\u522a\u9664\u81e8\u6642\u8868\u3002\u4ee5\u4e0b\u662f\u522a\u9664\u81e8\u6642\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>DROP TEMPORARY TABLE IF EXISTS temp_sales;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u6aa2\u67e5 <code>temp_sales<\/code> \u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u5b58\u5728\u5247\u5c07\u5176\u522a\u9664\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-UdaNsuyWqD\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u7684\u81e8\u6642\u8868\u529f\u80fd\u70ba\u6578\u64da\u8655\u7406\u63d0\u4f9b\u4e86\u9748\u6d3b\u6027\u548c\u4fbf\u5229\u6027\u3002\u901a\u904e\u5275\u5efa\u81e8\u6642\u8868\uff0c\u7528\u6236\u53ef\u4ee5\u5728\u6703\u8a71\u671f\u9593\u5b58\u5132\u548c\u64cd\u4f5c\u6578\u64da\uff0c\u800c\u4e0d\u6703\u5f71\u97ff\u5176\u4ed6\u7528\u6236\u7684\u6578\u64da\u3002\u9019\u4f7f\u5f97\u81e8\u6642\u8868\u5728\u9032\u884c\u8907\u96dc\u67e5\u8a62\u548c\u6578\u64da\u5206\u6790\u6642\u975e\u5e38\u6709\u7528\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u5347\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u81e8\u6642\u8868\u7684SQL\u4ee3\u78bc\u793a\u4f8b\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7ba1\u7406\u548c\u64cd\u4f5c\u81e8\u6642\u6578\u64da\u4ee5\u63d0\u5347\u67e5\u8a62\u6027\u80fd\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-76094","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76094","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=76094"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76094\/revisions"}],"predecessor-version":[{"id":76095,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76094\/revisions\/76095"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76094"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76094"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76094"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}