{"id":5626,"date":"2024-11-14T11:36:05","date_gmt":"2024-11-14T03:36:05","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5626\/"},"modified":"2024-11-14T11:36:05","modified_gmt":"2024-11-14T03:36:05","slug":"sql%e9%99%8d%e5%ba%8f%e6%80%8e%e4%b9%88%e5%86%99","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5626\/","title":{"rendered":"sql\u964d\u5e8f\u600e\u4e48\u5199"},"content":{"rendered":"

\n \u5728 sql \u4e2d\uff0c\u4f7f\u7528 order by \u5b50\u53e5\u5e76\u6307\u5b9a desc \u5173\u952e\u5b57\u53ef\u4ee5\u5bf9\u6570\u636e\u8fdb\u884c\u964d\u5e8f\u6392\u5217\uff0c\u4ee5\u4fbf\u6309\u7167\u6307\u5b9a\u5217\u4ece\u6700\u5927\u503c\u5230\u6700\u5c0f\u503c\u663e\u793a\u7ed3\u679c\u3002\n<\/p><\/blockquote>\n

\"sql\u964d\u5e8f\u600e\u4e48\u5199\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u4f7f\u7528 SQL \u5bf9\u6570\u636e\u8fdb\u884c\u964d\u5e8f<\/strong><\/p>\n

\u5728 SQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 ORDER BY \u5b50\u53e5\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u964d\u5e8f\u6392\u5217\u3002ORDER BY \u5b50\u53e5\u7528\u4e8e\u6307\u5b9a\u6309\u7167\u54ea\u4e2a\u5217\u6216\u8868\u8fbe\u5f0f\u5bf9\u7ed3\u679c\u96c6\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

SELECT column_names\nFROM table_name\nORDER BY column_name DESC;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • column_names \u662f\u8981\u9009\u62e9\u7684\u5217<\/li>\n
  • table_name \u662f\u8981\u67e5\u8be2\u7684\u8868<\/li>\n
  • column_name \u662f\u8981\u6309\u5176\u8fdb\u884c\u6392\u5e8f\u7684\u5217<\/li>\n
  • DESC \u6307\u5b9a\u964d\u5e8f\u6392\u5217<\/li>\n<\/ul>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a customers \u7684\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4ee5\u4e0b\u6570\u636e\uff1a<\/p>\n\n\n\n\n\n\n\n\n
    id<\/th>\nname<\/th>\nage<\/th>\n<\/tr>\n<\/thead>\n
    1<\/td>\nJohn<\/td>\n30<\/td>\n<\/tr>\n
    2<\/td>\nMary<\/td>\n25<\/td>\n<\/tr>\n
    3<\/td>\nBob<\/td>\n40<\/td>\n<\/tr>\n
    4<\/td>\nAlice<\/td>\n35<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \u8981\u5c06 customers \u8868\u4e2d\u7684\u6570\u636e\u6309 age \u5217\u964d\u5e8f\u6392\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\uff1a<\/p>\n
    SELECT id, name, age\nFROM customers\nORDER BY age DESC;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u67e5\u8be2\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n\n\n\n\n\n
    id<\/th>\nname<\/th>\nage<\/th>\n<\/tr>\n<\/thead>\n
    3<\/td>\nBob<\/td>\n40<\/td>\n<\/tr>\n
    4<\/td>\nAlice<\/td>\n35<\/td>\n<\/tr>\n
    1<\/td>\nJohn<\/td>\n30<\/td>\n<\/tr>\n
    2<\/td>\nMary<\/td>\n25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \u901a\u8fc7\u5c06 DESC \u5173\u952e\u5b57\u6dfb\u52a0\u5230 ORDER BY \u5b50\u53e5\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u6570\u636e\u6309 age \u5217\u964d\u5e8f\u6392\u5217\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662fsql\u964d\u5e8f\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":"
    \u5728 sql \u4e2d\uff0c\u4f7f\u7528 order by \u5b50\u53e5\u5e76\u6307\u5b9a desc \u5173\u952e\u5b57\u53ef\u4ee5\u5bf9\u6570\u636e\u8fdb\u884c\u964d\u5e8f\u6392\u5217\uff0c\u4ee5\u4fbf\u6309\u7167\u6307\u5b9a\u5217\u4ece\u6700\u5927\u503c\u5230\u6700\u5c0f\u503c\u663e\u793a\u7ed3\u679c\u3002 \u5982\u4f55\u4f7f\u7528 SQL \u5bf9\u6570\u636e\u8fdb\u884c\u964d\u5e8f \u5728 SQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 ORDER BY \u5b50\u53e5\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u964d\u5e8f\u6392\u5217\u3002ORDER BY \u5b50\u53e5\u7528\u4e8e\u6307\u5b9a\u6309\u7167\u54ea\u4e2a\u5217\u6216\u8868\u8fbe\u5f0f\u5bf9\u7ed3\u679c\u96c6\u8fdb\u884c\u6392\u5e8f\u3002 \u8bed\u6cd5\uff1a SELECT column_names FROM table_name ORDER BY column_name DESC; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a column_names \u662f\u8981\u9009\u62e9\u7684\u5217 table_name \u662f\u8981\u67e5\u8be2\u7684\u8868 column_name \u662f\u8981\u6309\u5176\u8fdb\u884c\u6392\u5e8f\u7684\u5217 DESC \u6307\u5b9a\u964d\u5e8f\u6392\u5217 \u793a\u4f8b\uff1a \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a customers \u7684\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4ee5\u4e0b\u6570\u636e\uff1a id name age 1 John 30 2 Mary 25 3 Bob 40 4 […]<\/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-5626","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5626","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=5626"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5626\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5626"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}