{"id":183876,"date":"2024-11-10T08:28:20","date_gmt":"2024-11-10T00:28:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183876\/"},"modified":"2024-11-10T08:28:21","modified_gmt":"2024-11-10T00:28:21","slug":"%e4%bd%bf%e7%94%a8mysql%e5%91%bd%e4%bb%a4%e8%a1%8c%e6%b1%82%e6%9c%80%e5%b0%8f%e5%80%bc%e5%92%8c%e6%9c%80%e5%a4%a7%e5%80%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183876\/","title":{"rendered":"\u4f7f\u7528mysql\u547d\u4ee4\u884c\u6c42\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8-mysql-%e5%91%bd%e4%bb%a4%e8%a1%8c%e6%b1%82%e6%9c%80%e5%b0%8f%e5%80%bc%e5%92%8c%e6%9c%80%e5%a4%a7%e5%80%bc-uwkXZpmjFI\">\u4f7f\u7528 MySQL \u547d\u4ee4\u884c\u6c42\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u67e5\u8a62\u6578\u64da\u7684\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\u662f\u975e\u5e38\u5e38\u898b\u7684\u9700\u6c42\u3002MySQL \u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\uff0c\u7279\u5225\u662f\u5728\u547d\u4ee4\u884c\u754c\u9762\u4e2d\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 MySQL \u7684\u5167\u5efa\u51fd\u6578\u4f86\u67e5\u8a62\u6578\u64da\u8868\u4e2d\u7684\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-uwkXZpmjFI\">\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728 MySQL \u4e2d\uff0c\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\u7684\u67e5\u8a62\u901a\u5e38\u4f7f\u7528 <code>MIN()<\/code> \u548c <code>MAX()<\/code> \u51fd\u6578\u3002\u9019\u5169\u500b\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u5f9e\u6307\u5b9a\u7684\u5217\u4e2d\u7372\u53d6\u6700\u5c0f\u6216\u6700\u5927\u503c\u3002\u9019\u4e9b\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT MIN(column_name) FROM table_name;\nSELECT MAX(column_name) FROM table_name;<\/code><\/pre>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e6%9c%80%e5%b0%8f%e5%80%bc%e5%92%8c%e6%9c%80%e5%a4%a7%e5%80%bc%e7%9a%84%e7%af%84%e4%be%8b-uwkXZpmjFI\">\u67e5\u8a62\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\u7684\u7bc4\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u6578\u64da\u8868\uff0c\u8a72\u8868\u5305\u542b\u54e1\u5de5\u7684\u5de5\u8cc7\u4fe1\u606f\u3002\u8868\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE employees (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    name VARCHAR(100),\n    salary DECIMAL(10, 2)\n);<\/code><\/pre>\n<p>\u6211\u5011\u53ef\u4ee5\u63d2\u5165\u4e00\u4e9b\u793a\u4f8b\u6578\u64da\uff1a<\/p>\n<pre><code>INSERT INTO employees (name, salary) VALUES\n('Alice', 50000.00),\n('Bob', 60000.00),\n('Charlie', 45000.00),\n('David', 70000.00);<\/code><\/pre>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e6%9c%80%e5%b0%8f%e5%b7%a5%e8%b3%87-uwkXZpmjFI\">\u67e5\u8a62\u6700\u5c0f\u5de5\u8cc7<\/h3>\n<p>\u8981\u67e5\u8a62 <code>employees<\/code> \u8868\u4e2d\u7684\u6700\u5c0f\u5de5\u8cc7\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>SELECT MIN(salary) AS MinSalary FROM employees;<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u67e5\u8a62\u5f8c\uff0c\u7d50\u679c\u5c07\u986f\u793a\u6700\u4f4e\u5de5\u8cc7\uff1a<\/p>\n<pre><code>+-----------+\n| MinSalary |\n+-----------+\n| 45000.00  |\n+-----------+<\/code><\/pre>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e6%9c%80%e5%a4%a7%e5%b7%a5%e8%b3%87-uwkXZpmjFI\">\u67e5\u8a62\u6700\u5927\u5de5\u8cc7<\/h3>\n<p>\u540c\u6a23\u5730\uff0c\u8981\u67e5\u8a62\u6700\u5927\u5de5\u8cc7\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>SELECT MAX(salary) AS MaxSalary FROM employees;<\/code><\/pre>\n<p>\u57f7\u884c\u5f8c\uff0c\u7d50\u679c\u5c07\u986f\u793a\u6700\u9ad8\u5de5\u8cc7\uff1a<\/p>\n<pre><code>+-----------+\n| MaxSalary |\n+-----------+\n| 70000.00  |\n+-----------+<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e5%90%88%e5%85%b6%e4%bb%96%e6%9f%a5%e8%a9%a2-uwkXZpmjFI\">\u7d50\u5408\u5176\u4ed6\u67e5\u8a62<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u67e5\u8a62\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\u901a\u5e38\u9700\u8981\u8207\u5176\u4ed6\u67e5\u8a62\u7d50\u5408\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u80fd\u5e0c\u671b\u67e5\u8a62\u6bcf\u500b\u90e8\u9580\u7684\u6700\u4f4e\u548c\u6700\u9ad8\u5de5\u8cc7\u3002\u5047\u8a2d <code>employees<\/code> \u8868\u4e2d\u9084\u6709\u4e00\u500b <code>department<\/code> \u5217\uff0c\u6211\u5011\u53ef\u4ee5\u9019\u6a23\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT department, MIN(salary) AS MinSalary, MAX(salary) AS MaxSalary\nFROM employees\nGROUP BY department;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u500b\u90e8\u9580\u7684\u6700\u4f4e\u548c\u6700\u9ad8\u5de5\u8cc7\uff0c\u5e6b\u52a9\u7ba1\u7406\u8005\u66f4\u597d\u5730\u4e86\u89e3\u85aa\u8cc7\u7d50\u69cb\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-uwkXZpmjFI\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528 MySQL \u7684 <code>MIN()<\/code> \u548c <code>MAX()<\/code> \u51fd\u6578\u53ef\u4ee5\u8f15\u9b06\u5730\u67e5\u8a62\u6578\u64da\u8868\u4e2d\u7684\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\u3002\u9019\u4e9b\u51fd\u6578\u4e0d\u50c5\u7c21\u55ae\u6613\u7528\uff0c\u9084\u80fd\u8207\u5176\u4ed6\u67e5\u8a62\u7d50\u5408\uff0c\u63d0\u4f9b\u66f4\u8c50\u5bcc\u7684\u6578\u64da\u5206\u6790\u529f\u80fd\u3002\u7121\u8ad6\u662f\u5728\u65e5\u5e38\u7684\u6578\u64da\u7ba1\u7406\u9084\u662f\u8907\u96dc\u7684\u6578\u64da\u5206\u6790\u4e2d\uff0c\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u7684 SQL \u67e5\u8a62\u6280\u5de7\u90fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u63d0\u4f9b\u66f4\u7a69\u5b9a\u7684\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528MySQL\u547d\u4ee4\u884c\u8f7b\u677e\u67e5\u8be2\u6570\u636e\u8868\u4e2d\u7684\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\uff0c\u638c\u63e1\u57fa\u672c\u8bed\u6cd5\uff0c\u63d0\u5347\u6570\u636e\u5206\u6790\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-183876","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183876","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=183876"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183876\/revisions"}],"predecessor-version":[{"id":183877,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183876\/revisions\/183877"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}