{"id":76242,"date":"2024-10-16T05:02:15","date_gmt":"2024-10-15T21:02:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76242\/"},"modified":"2024-10-16T05:02:15","modified_gmt":"2024-10-15T21:02:15","slug":"mysql%e5%85%a5%e9%96%80%ef%bc%9a%e4%bd%bf%e7%94%a8min%e5%87%bd%e6%95%b8%e8%bf%94%e5%9b%9e%e4%b8%80%e7%b5%84%e5%80%bc%e4%b8%ad%e7%9a%84%e6%9c%80%e5%b0%8f%e5%80%bc%e3%80%82","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76242\/","title":{"rendered":"MySQL\u5165\u9580\uff1a\u4f7f\u7528MIN()\u51fd\u6578\u8fd4\u56de\u4e00\u7d44\u503c\u4e2d\u7684\u6700\u5c0f\u503c\u3002"},"content":{"rendered":"<h1 id=\"mysql%e5%85%a5%e9%96%80%ef%bc%9a%e4%bd%bf%e7%94%a8min%e5%87%bd%e6%95%b8%e8%bf%94%e5%9b%9e%e4%b8%80%e7%b5%84%e5%80%bc%e4%b8%ad%e7%9a%84%e6%9c%80%e5%b0%8f%e5%80%bc-eGBrDteqlE\">MySQL\u5165\u9580\uff1a\u4f7f\u7528MIN()\u51fd\u6578\u8fd4\u56de\u4e00\u7d44\u503c\u4e2d\u7684\u6700\u5c0f\u503c<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u975e\u5e38\u6d41\u884c\u7684\u9078\u64c7\uff0c\u56e0\u70ba\u5b83\u7684\u9ad8\u6548\u80fd\u548c\u9748\u6d3b\u6027\u3002\u5c0d\u65bc\u521d\u5b78\u8005\u4f86\u8aaa\uff0c\u4e86\u89e3\u5982\u4f55\u4f7f\u7528MySQL\u7684\u5404\u7a2e\u51fd\u6578\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662fMIN()\u51fd\u6578\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0eMIN()\u51fd\u6578\u7684\u7528\u6cd5\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u969b\u7684\u7bc4\u4f8b\u4f86\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u500b\u51fd\u6578\u7684\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afmin%e5%87%bd%e6%95%b8%ef%bc%9f-eGBrDteqlE\">\u4ec0\u9ebc\u662fMIN()\u51fd\u6578\uff1f<\/h2>\n<p>MIN()\u51fd\u6578\u662f\u4e00\u500b\u805a\u5408\u51fd\u6578\uff0c\u7528\u65bc\u8fd4\u56de\u4e00\u7d44\u503c\u4e2d\u7684\u6700\u5c0f\u503c\u3002\u9019\u500b\u51fd\u6578\u53ef\u4ee5\u7528\u65bc\u6578\u5b57\u3001\u65e5\u671f\u548c\u5b57\u7b26\u4e32\u7b49\u6578\u64da\u985e\u578b\u3002\u7576\u4f60\u9700\u8981\u5f9e\u4e00\u7d44\u6578\u64da\u4e2d\u627e\u51fa\u6700\u5c0f\u503c\u6642\uff0cMIN()\u51fd\u6578\u662f\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\u3002<\/p>\n<h2 id=\"min%e5%87%bd%e6%95%b8%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-eGBrDteqlE\">MIN()\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<pre><code>MIN(expression)<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>expression<\/code>\u53ef\u4ee5\u662f\u4efb\u4f55\u6709\u6548\u7684\u5217\u540d\u6216\u8a08\u7b97\u8868\u9054\u5f0f\u3002\u7576\u4f60\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528MIN()\u51fd\u6578\u6642\uff0cMySQL\u6703\u81ea\u52d5\u8a08\u7b97\u4e26\u8fd4\u56de\u8a72\u5217\u4e2d\u7684\u6700\u5c0f\u503c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8min%e5%87%bd%e6%95%b8%e7%9a%84%e7%af%84%e4%be%8b-eGBrDteqlE\">\u4f7f\u7528MIN()\u51fd\u6578\u7684\u7bc4\u4f8b<\/h2>\n<p>\u70ba\u4e86\u66f4\u597d\u5730\u7406\u89e3MIN()\u51fd\u6578\u7684\u4f7f\u7528\uff0c\u8b93\u6211\u5011\u770b\u5e7e\u500b\u5be6\u969b\u7684\u7bc4\u4f8b\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b1%ef%bc%9a%e6%9f%a5%e8%a9%a2%e6%9c%80%e5%b0%8f%e7%9a%84%e5%83%b9%e6%a0%bc-eGBrDteqlE\">\u7bc4\u4f8b1\uff1a\u67e5\u8a62\u6700\u5c0f\u7684\u50f9\u683c<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>products<\/code>\u7684\u8868\u683c\uff0c\u8a72\u8868\u683c\u5305\u542b\u7522\u54c1\u7684\u50f9\u683c\u4fe1\u606f\u3002\u4ee5\u4e0b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u7522\u54c1\u4e2d\u7684\u6700\u4f4e\u50f9\u683c\uff1a<\/p>\n<pre><code>SELECT MIN(price) AS lowest_price FROM products;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de<code>products<\/code>\u8868\u4e2d<code>price<\/code>\u5217\u7684\u6700\u5c0f\u503c\uff0c\u4e26\u5c07\u5176\u547d\u540d\u70ba<code>lowest_price<\/code>\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b2%ef%bc%9a%e6%9f%a5%e8%a9%a2%e6%af%8f%e5%80%8b%e9%a1%9e%e5%88%a5%e7%9a%84%e6%9c%80%e4%bd%8e%e5%83%b9%e6%a0%bc-eGBrDteqlE\">\u7bc4\u4f8b2\uff1a\u67e5\u8a62\u6bcf\u500b\u985e\u5225\u7684\u6700\u4f4e\u50f9\u683c<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u8a62\u6bcf\u500b\u7522\u54c1\u985e\u5225\u4e2d\u7684\u6700\u4f4e\u50f9\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528GROUP BY\u5b50\u53e5\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SELECT category, MIN(price) AS lowest_price \nFROM products \nGROUP BY category;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u500b\u985e\u5225\u7684\u6700\u4f4e\u50f9\u683c\uff0c\u4e26\u4e14\u6703\u6839\u64da<code>category<\/code>\u5217\u9032\u884c\u5206\u7d44\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b3%ef%bc%9a%e6%9f%a5%e8%a9%a2%e6%9c%80%e4%bd%8e%e7%9a%84%e8%a8%82%e5%96%ae%e6%97%a5%e6%9c%9f-eGBrDteqlE\">\u7bc4\u4f8b3\uff1a\u67e5\u8a62\u6700\u4f4e\u7684\u8a02\u55ae\u65e5\u671f<\/h3>\n<p>\u9664\u4e86\u6578\u5b57\uff0cMIN()\u51fd\u6578\u4e5f\u53ef\u4ee5\u7528\u65bc\u65e5\u671f\u985e\u578b\u3002\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>orders<\/code>\u7684\u8868\u683c\uff0c\u4ee5\u4e0b\u67e5\u8a62\u5c07\u8fd4\u56de\u6700\u65e9\u7684\u8a02\u55ae\u65e5\u671f\uff1a<\/p>\n<pre><code>SELECT MIN(order_date) AS earliest_order_date FROM orders;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de<code>orders<\/code>\u8868\u4e2d<code>order_date<\/code>\u5217\u7684\u6700\u5c0f\u503c\uff0c\u5373\u6700\u65e9\u7684\u8a02\u55ae\u65e5\u671f\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-eGBrDteqlE\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>MIN()\u51fd\u6578\u5ffd\u7565NULL\u503c\uff0c\u56e0\u6b64\u5982\u679c\u5217\u4e2d\u6709NULL\u503c\uff0c\u9019\u4e9b\u503c\u4e0d\u6703\u5f71\u97ff\u6700\u5c0f\u503c\u7684\u8a08\u7b97\u3002<\/li>\n<li>\u5728\u4f7f\u7528MIN()\u51fd\u6578\u6642\uff0c\u78ba\u4fdd\u4f60\u7684\u6578\u64da\u985e\u578b\u662f\u6b63\u78ba\u7684\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u932f\u8aa4\u3002<\/li>\n<li>\u7576\u8207\u5176\u4ed6\u805a\u5408\u51fd\u6578\u4e00\u8d77\u4f7f\u7528\u6642\uff0c\u8a18\u5f97\u4f7f\u7528GROUP BY\u5b50\u53e5\u4f86\u7372\u5f97\u6b63\u78ba\u7684\u7d50\u679c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-eGBrDteqlE\">\u7e3d\u7d50<\/h2>\n<p>MIN()\u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u627e\u5230\u4e00\u7d44\u6578\u64da\u4e2d\u7684\u6700\u5c0f\u503c\u3002\u7121\u8ad6\u662f\u67e5\u8a62\u7522\u54c1\u50f9\u683c\u3001\u8a02\u55ae\u65e5\u671f\u9084\u662f\u5176\u4ed6\u6578\u64da\uff0c\u638c\u63e1\u9019\u500b\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\u90fd\u80fd\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u3002\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u4f60\u7684MySQL\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u5feb\u7684\u6578\u64da\u8655\u7406\u901f\u5ea6\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728MySQL\u4e2d\u4f7f\u7528MIN()\u51fd\u6578\uff0c\u8f15\u9b06\u8fd4\u56de\u4e00\u7d44\u503c\u4e2d\u7684\u6700\u5c0f\u503c\uff0c\u638c\u63e1\u6578\u64da\u67e5\u8a62\u7684\u57fa\u672c\u6280\u5de7\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-76242","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76242","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=76242"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76242\/revisions"}],"predecessor-version":[{"id":76243,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76242\/revisions\/76243"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}