{"id":5687,"date":"2024-11-14T08:00:04","date_gmt":"2024-11-14T00:00:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5687\/"},"modified":"2024-11-14T08:00:04","modified_gmt":"2024-11-14T00:00:04","slug":"sql%e9%99%8d%e5%ba%8f%e8%af%ad%e5%8f%a5%e6%80%8e%e4%b9%88%e5%86%99","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5687\/","title":{"rendered":"sql\u964d\u5e8f\u8bed\u53e5\u600e\u4e48\u5199"},"content":{"rendered":"<blockquote><p>\n  sql \u4e2d\u4f7f\u7528 order by \u5b50\u53e5\u5bf9\u7ed3\u679c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff0c\u5176\u8bed\u6cd5\u4e3a\uff1aselect \u5217\u540d from \u8868\u540d order by \u5217\u540d desc\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/30\/2024053020423742323.jpg\" class=\"aligncenter\" title=\"sql\u964d\u5e8f\u8bed\u53e5\u600e\u4e48\u5199\u63d2\u56fe\" alt=\"sql\u964d\u5e8f\u8bed\u53e5\u600e\u4e48\u5199\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u964d\u5e8f\u8bed\u53e5<\/strong><\/p>\n<p>\u5728 SQL \u4e2d\uff0c\u4f7f\u7528 ORDER BY \u5b50\u53e5\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u5176\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>SELECT \u5217\u540d\nFROM \u8868\u540d\nORDER BY \u5217\u540d DESC<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>\u5217\u540d\uff1a\u8981\u6392\u5e8f\u7684\u5217\u7684\u540d\u79f0<\/li>\n<li>DESC\uff1a\u964d\u5e8f\u987a\u5e8f<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u4ee5\u4e0b SQL \u8bed\u53e5\u5c06 customers \u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u6309\u7167 age \u5217\u7684\u964d\u5e8f\uff1a<\/p>\n<pre>SELECT *\nFROM customers\nORDER BY age DESC<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u5c06\u4ea7\u751f\u4ee5\u4e0b\u7ed3\u679c\uff1a<\/p>\n<pre>| id | name | age |\n|---|---|---|\n| 5 | John Doe | 45 |\n| 3 | Jane Smith | 35 |\n| 1 | Mary Johnson | 25 |<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5176\u4ed6\u793a\u4f8b\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p><strong>\u6309\u591a\u4e2a\u5217\u964d\u5e8f\u6392\u5e8f\uff1a<\/strong><\/p>\n<pre>SELECT *\nFROM customers\nORDER BY age DESC, name DESC<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p>\u8fd9\u5c06\u9996\u5148\u6309 age \u964d\u5e8f\u6392\u5e8f\uff0c\u7136\u540e\u6309 name \u964d\u5e8f\u6392\u5e8f\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u4ec5\u5305\u542b\u552f\u4e00\u7ed3\u679c\uff1a<\/strong><\/p>\n<pre>SELECT DISTINCT *\nFROM customers\nORDER BY age DESC<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p>\u8fd9\u5c06\u4ec5\u8fd4\u56de\u5177\u6709\u552f\u4e00 age \u503c\u7684\u8bb0\u5f55\uff0c\u5e76\u4e14\u6309 age \u964d\u5e8f\u6392\u5e8f\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u4f7f\u7528\u522b\u540d\uff1a<\/strong><\/p>\n<pre>SELECT id AS customer_id, name AS customer_name, age\nFROM customers\nORDER BY age DESC<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p>\u8fd9\u5c06\u4f7f\u7528\u522b\u540d customer_id \u548c customer_name \u6765\u5f15\u7528 id \u548c name \u5217\uff0c\u5e76\u6309 age \u964d\u5e8f\u6392\u5e8f\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u964d\u5e8f\u8bed\u53e5\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 \u4e2d\u4f7f\u7528 order by \u5b50\u53e5\u5bf9\u7ed3\u679c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff0c\u5176\u8bed\u6cd5\u4e3a\uff1aselect \u5217\u540d from \u8868\u540d order by \u5217\u540d desc\u3002 SQL \u964d\u5e8f\u8bed\u53e5 \u5728 SQL \u4e2d\uff0c\u4f7f\u7528 ORDER BY \u5b50\u53e5\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u5176\u8bed\u6cd5\u5982\u4e0b\uff1a SELECT \u5217\u540d FROM \u8868\u540d ORDER BY \u5217\u540d DESC \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a \u5217\u540d\uff1a\u8981\u6392\u5e8f\u7684\u5217\u7684\u540d\u79f0 DESC\uff1a\u964d\u5e8f\u987a\u5e8f \u793a\u4f8b\uff1a \u4ee5\u4e0b SQL \u8bed\u53e5\u5c06 customers \u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u6309\u7167 age \u5217\u7684\u964d\u5e8f\uff1a SELECT * FROM customers ORDER BY age DESC \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u4ea7\u751f\u4ee5\u4e0b\u7ed3\u679c\uff1a | id | name | [&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-5687","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5687","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=5687"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5687\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}