{"id":200577,"date":"2025-05-06T10:47:23","date_gmt":"2025-05-06T02:47:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200577\/"},"modified":"2025-05-06T10:47:23","modified_gmt":"2025-05-06T02:47:23","slug":"mysql-%e5%a6%82%e4%bd%95%e6%a0%b9%e6%8d%ae%e6%9d%a1%e4%bb%b6%e5%af%b9%e5%ad%97%e6%ae%b5%e5%8e%bb%e9%87%8d%ef%bc%9a%e5%a6%82%e4%bd%95%e5%8c%ba%e5%88%86%e5%a2%83%e5%86%85%e5%a4%96%e8%ae%b0%e5%bd%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200577\/","title":{"rendered":"MySQL \u5982\u4f55\u6839\u636e\u6761\u4ef6\u5bf9\u5b57\u6bb5\u53bb\u91cd\uff1a\u5982\u4f55\u533a\u5206\u5883\u5185\u5916\u8bb0\u5f55\u5e76\u83b7\u53d6\u552f\u4e00\u57df\u540d\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL \u5982\u4f55\u6839\u636e\u6761\u4ef6\u5bf9\u5b57\u6bb5\u53bb\u91cd\uff1a\u5982\u4f55\u533a\u5206\u5883\u5185\u5916\u8bb0\u5f55\u5e76\u83b7\u53d6\u552f\u4e00\u57df\u540d\uff1f<\/h1>\n<p>\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241108\/1731073720672e16b83a4b5.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql \u4e2d\u6839\u636e\u6761\u4ef6\u5bf9\u5b57\u6bb5\u53bb\u91cd\uff1a\u5883\u5185\u5883\u5916\u533a\u5206<\/strong><\/p>\n<p>\u95ee\u9898\uff1a\u5728\u4e00\u4e2a\u8868\u4e2d\uff0c\u9700\u8981\u6309\u7167 domain \u5b57\u6bb5\u53bb\u91cd\uff0c\u4f46\u540c\u65f6\u533a\u5206 loc \u5b57\u6bb5\u4e2d\u7684\u5883\u5185\u548c\u5883\u5916\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u8868\u4e2d\u6709\u4ee5\u4e0b\u6570\u636e\uff1a<\/p>\n<pre>domain   loc\na.org    \u534e\u5317\u8054\u901a\nb.org    \u534e\u5317\u8054\u901a\nb.org    \u534e\u4e1c\u7535\u4fe1\nc.org    \u897f\u5357\u7535\u4fe1\nc.org    \u897f\u5357\u79fb\u52a8 \nc.org    \u534e\u4e1c\u79fb\u52a8\nd.org    \u534e\u4e2d\u7535\u4fe1\nd.org    \u897f\u5317\u8054\u901a\ne.org    \u5883\u5185 \nf.org    \u5883\u5916<\/pre>\n<p>\u9700\u8981\u5f97\u5230\u4ee5\u4e0b\u7ed3\u679c\uff1a<\/p>\n<pre>domain   loc\na.com    \u897f\u5357\u8fde\u901a\na.com    \u5883\u5916\nb.com    \u897f\u5317\u7535\u4fe1\nc.com    \u897f\u5357\u7535\u4fe1<\/pre>\n<p>\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n<p>\u5728 mysql \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 union all \u8bed\u53e5\u6765\u5b9e\u73b0\u4e0a\u8ff0\u9700\u6c42\uff1a<\/p>\n<pre>SELECT DISTINCT domain FROM url WHERE loc = \"\u5883\u5916\"\nUNION ALL\n(\n  SELECT DISTINCT domain FROM url WHERE loc != \"\u5883\u5916\"\n)<\/pre>\n<p>\u6b64 sql \u8bed\u53e5\u9996\u5148\u4ece\u8868 url \u4e2d\u9009\u62e9 loc \u5b57\u6bb5\u4e3a &#8220;\u5883\u5916&#8221; \u7684\u6240\u6709\u552f\u4e00 domain \u503c\uff0c\u7136\u540e\u4f7f\u7528 union all \u8bed\u53e5\u5c06\u5176\u4e0e\u9009\u62e9 loc \u5b57\u6bb5\u4e0d\u7b49\u4e8e &#8220;\u5883\u5916&#8221; \u7684\u6240\u6709\u552f\u4e00 domain \u503c\u5408\u5e76\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u6700\u7ec8\u7684\u7ed3\u679c\u5c31\u5305\u542b\u4e86\u6240\u6709\u552f\u4e00\u7684 domain \u503c\uff0c\u5e76\u533a\u5206\u4e86\u5883\u5185\u548c\u5883\u5916\u8bb0\u5f55\u3002<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aMySQL \u5982\u4f55\u6839\u636e\u6761\u4ef6\u5bf9\u5b57\u6bb5\u53bb\u91cd\uff1a\u5982\u4f55\u533a\u5206\u5883\u5185\u5916\u8bb0\u5f55\u5e76\u83b7\u53d6\u552f\u4e00\u57df\u540d\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6570\u636e\u5e93\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u5982\u4f55\u6839\u636e\u6761\u4ef6\u5bf9\u5b57\u6bb5\u53bb&#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-200577","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200577","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=200577"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200577\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}