{"id":200977,"date":"2025-05-06T09:32:02","date_gmt":"2025-05-06T01:32:02","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200977\/"},"modified":"2025-05-06T09:32:02","modified_gmt":"2025-05-06T01:32:02","slug":"mysql-%e5%88%86%e7%ba%a7%e6%8e%88%e6%9d%83%e4%bf%a1%e6%81%af%e6%9f%a5%e8%af%a2%e4%bc%98%e5%8c%96%ef%bc%9a%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e8%8e%b7%e5%8f%96%e7%94%a8%e6%88%b7%e8%a2%ab%e6%8e%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200977\/","title":{"rendered":"MySQL \u5206\u7ea7\u6388\u6743\u4fe1\u606f\u67e5\u8be2\u4f18\u5316\uff1a\u5982\u4f55\u9ad8\u6548\u83b7\u53d6\u7528\u6237\u88ab\u6388\u6743\u7684\u5206\u7ea7\u7ed3\u6784\uff08D\u3001E\u3001F\uff09\u5e76\u652f\u6301\u5206\u9875\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL \u5206\u7ea7\u6388\u6743\u4fe1\u606f\u67e5\u8be2\u4f18\u5316\uff1a\u5982\u4f55\u9ad8\u6548\u83b7\u53d6\u7528\u6237\u88ab\u6388\u6743\u7684\u5206\u7ea7\u7ed3\u6784\uff08D\u3001E\u3001F\uff09\u5e76\u652f\u6301\u5206\u9875\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\/20241123\/17323729506741e9d65864e.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4f18\u5316 mysql \u5206\u7ea7\u6388\u6743\u4fe1\u606f\u67e5\u8be2<\/strong><\/p>\n<p><strong>\u95ee\u9898\uff1a<\/strong><\/p>\n<p>mysql \u5982\u4f55\u6709\u6548\u7387\u5730\u83b7\u53d6\u67d0\u4e2a\u7528\u6237\u88ab\u6388\u6743\u7684\u5206\u7ea7\u7ed3\u6784\uff08d\u3001e\u3001f\uff09\uff0c\u5e76\u652f\u6301\u5206\u9875\uff1f<\/p>\n<p><strong>\u8868\u7ed3\u6784\u548c\u6388\u6743\u6a21\u5f0f\uff1a<\/strong><\/p>\n<ul>\n<li><strong>user:<\/strong> \u7528\u6237\u8868<\/li>\n<li><strong>d:<\/strong> \u4e00\u7ea7\u5206\u7c7b\u8868<\/li>\n<li><strong>e:<\/strong> \u4e8c\u7ea7\u5206\u7c7b\u8868<\/li>\n<li><strong>f:<\/strong> \u4e09\u7ea7\u5206\u7c7b\u8868<\/li>\n<li><strong>p:<\/strong> \u6388\u6743\u8868<\/li>\n<\/ul>\n<p><strong>\u6388\u6743\u6a21\u5f0f\uff1a<\/strong><\/p>\n<ul>\n<li>[1] &#8211; &#8211; &#8211; &#8211; \/\/ \u6388\u6743\u6240\u6709 d\u3001e\u3001f<\/li>\n<li>[2] d &#8211; &#8211; &#8211; \/\/ \u6388\u6743 d\uff0c\u5305\u62ec d \u4e0b\u6240\u6709 e \u548c f<\/li>\n<li>[3] d e &#8211; &#8211; \/\/ \u6388\u6743 d &gt; e\uff0c\u5305\u62ec e \u4e0b\u6240\u6709 f<\/li>\n<li>[4] d e f &#8211; \/\/ \u6388\u6743 d &gt; e &gt; f<\/li>\n<li>[5] &#8211; &#8211; &#8211; a \/\/ \u6388\u6743 area\uff0c\u5305\u62ec\u6240\u6709\u5c5e\u4e8e area \u7684 f\uff0c\u8de8 d\uff0c\u8de8 d &gt; e<\/li>\n<li>[6] d &#8211; &#8211; a \/\/ \u6388\u6743 d \u4e0b\u7684 area\uff0c\u542b d \u4e0b\u6240\u6709\u5728 area \u7684 f\uff0c\u8de8 d &gt; e<\/li>\n<li>[7] d e &#8211; a \/\/ \u6388\u6743 d &gt; e \u4e0b\u7684 area\uff0c\u542b e \u4e0b\u6240\u6709\u5728 area \u7684 f<\/li>\n<\/ul>\n<p><strong>\u8981\u6c42\uff1a<\/strong><\/p>\n<ol>\n<li>\u91cd\u70b9\u67e5\u8be2\u67d0\u4e2a\u7528\u6237\u7684\u88ab\u6388\u6743\u7684 f \u5217\u8868\uff0c\u6570\u91cf\u7d1a\u53ef\u80fd\u4e3a 4 \u4f4d\u6570\uff0c\u9700\u8981\u5206\u9875\u3002<\/li>\n<li>\u67e5\u8be2\u67d0\u4e2a\u7528\u6237\u7684\u88ab\u6388\u6743\u7684 e \u5217\u8868\u3002<\/li>\n<li>\u67e5\u8be2\u67d0\u4e2a\u7528\u6237\u7684\u88ab\u6388\u6743\u7684 d \u5217\u8868\u3002<\/li>\n<\/ol>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<p><strong>\u67e5\u8be2\u88ab\u6388\u6743\u7684 f \u5217\u8868\uff1a<\/strong><\/p>\n<pre>select f.f_id, f.f_name, f.f_area\nfrom p\njoin f on p.f_id = f.f_id or p.f_id = 0\nwhere p.u_id = @user_id and (p.d_id = f.d_id or p.d_id = 0) \nand (p.e_id = f.e_id or p.e_id = 0) \nand (p.a_code = f.f_area or p.a_code = \"\")\norder by f.f_id \nlimit x, y<\/pre>\n<p><strong>\u67e5\u8be2\u88ab\u6388\u6743\u7684 e \u5217\u8868\uff1a<\/strong><\/p>\n<pre>select e.e_id, e.e_name\nfrom p\njoin e on p.e_id = e.e_id or p.e_id = 0\nwhere p.u_id = @user_id and (p.d_id = e.d_id or p.d_id = 0)\norder by e.e_id\nlimit x, y<\/pre>\n<p><strong>\u67e5\u8be2\u88ab\u6388\u6743\u7684 d \u5217\u8868\uff1a<\/strong><\/p>\n<pre>SELECT D.D_id, D.D_name\nFROM P\nJOIN D ON P.D_id = D.D_id OR P.D_id = 0\nWHERE P.U_id = @user_id\nORDER BY D.D_id\nLIMIT x, y<\/pre>\n<p>\u4eca\u5929\u5173\u4e8e\u300aMySQL \u5206\u7ea7\u6388\u6743\u4fe1\u606f\u67e5\u8be2\u4f18\u5316\uff1a\u5982\u4f55\u9ad8\u6548\u83b7\u53d6\u7528\u6237\u88ab\u6388\u6743\u7684\u5206\u7ea7\u7ed3\u6784\uff08D\u3001E\u3001F\uff09\u5e76\u652f\u6301\u5206\u9875\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u5206\u7ea7\u6388\u6743\u4fe1\u606f\u67e5\u8be2\u4f18\u5316&#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-200977","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200977","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=200977"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200977\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200977"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200977"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}