{"id":200349,"date":"2025-05-06T08:30:32","date_gmt":"2025-05-06T00:30:32","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200349\/"},"modified":"2025-05-06T08:30:32","modified_gmt":"2025-05-06T00:30:32","slug":"%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e6%9f%a5%e8%af%a2%e5%a4%9a%e4%b8%aa%e8%ae%a2%e5%8d%95%e5%8f%b7%e7%9a%84%e6%9c%80%e6%96%b0%e7%8a%b6%e6%80%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200349\/","title":{"rendered":"\u5982\u4f55\u9ad8\u6548\u67e5\u8be2\u591a\u4e2a\u8ba2\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u9ad8\u6548\u67e5\u8be2\u591a\u4e2a\u8ba2\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\uff1f<\/h1>\n<p>\u6765\u5230\u4e3b\u673a\u5b9d\u8d1d\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6570\u636e\u5e93\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300a\u5982\u4f55\u9ad8\u6548\u67e5\u8be2\u591a\u4e2a\u8ba2\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\uff1f\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241102\/17305378716725e98f5c1c9.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql \u67e5\u8be2\u591a\u4e2a\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001<\/strong><\/p>\n<p>\u5728\u7ed9\u5b9a\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u67e5\u8be2 a \u8868\u4e2d\u7279\u5b9a\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\u3002\u4f20\u7edf\u65b9\u6cd5\u662f\u5faa\u73af\u67e5\u8be2\uff0c\u8fd9\u5bf9\u4e8e\u5927\u91cf\u5355\u53f7\u6765\u8bf4\u6548\u7387\u4f4e\u4e0b\u3002\u4e0b\u9762\u63d0\u4f9b\u4e00\u79cd\u4f18\u5316\u67e5\u8be2\u65b9\u5f0f\uff1a<\/p>\n<ol>\n<li><strong>\u4f7f\u7528 in \u5173\u952e\u5b57\uff1a<\/strong><\/li>\n<\/ol>\n<p>\u8be5\u5173\u952e\u5b57\u5141\u8bb8\u4e00\u6b21\u67e5\u8be2\u591a\u4e2a\u503c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u83b7\u53d6\u5355\u53f7\u4e3a 1 \u548c 2 \u7684\u6700\u65b0\u72b6\u6001\uff1a<\/p>\n<pre>select ord_id, status, updated_at\nfrom tablename\nwhere ord_id in (123456, 456789)\ngroup by ord_id<\/pre>\n<ol>\n<li><strong>\u4f7f\u7528 group by \u5173\u952e\u5b57\uff1a<\/strong><\/li>\n<\/ol>\n<p>\u8be5\u5173\u952e\u5b57\u53ef\u6309\u6307\u5b9a\u5217\u8fdb\u884c\u5206\u7ec4\uff0c\u53ea\u8fd4\u56de\u6bcf\u4e2a\u7ec4\u7684\u7b2c\u4e00\u4e2a\u8bb0\u5f55\u3002\u5bf9\u4e8e\u672c\u4f8b\uff0c\u9700\u8981\u6309\u8ba2\u5355\u53f7 (ord_id) \u5206\u7ec4\uff1a<\/p>\n<pre>SELECT ord_id, MAX(status) AS latest_status, MAX(updated_at) AS latest_update\nFROM tablename\nWHERE ord_id IN (123456, 456789)\nGROUP BY ord_id<\/pre>\n<p>\u4ee5\u4e0a\u67e5\u8be2\u5c06\u8fd4\u56de\u6309\u8ba2\u5355\u53f7\u5206\u7ec4\u7684\u6700\u65b0\u72b6\u6001\u548c\u6700\u65b0\u66f4\u65b0\u65f6\u95f4\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5982\u4f55\u9ad8\u6548\u67e5\u8be2\u591a\u4e2a\u8ba2\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u9ad8\u6548\u67e5\u8be2\u591a\u4e2a\u8ba2\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200349","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200349","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200349"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200349\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}