{"id":168199,"date":"2024-11-06T10:21:22","date_gmt":"2024-11-06T02:21:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168199\/"},"modified":"2024-11-06T10:21:23","modified_gmt":"2024-11-06T02:21:23","slug":"%e7%8e%87sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e9%87%8d%e7%96%8a%e7%8e%87%e5%88%86%e6%9e%90%e8%88%87%e5%84%aa%e5%8c%96%ef%bc%88sqlserver%e9%87%8d%e7%96%8a%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168199\/","title":{"rendered":"\u7387SQL Server\u6578\u64da\u5eab\u91cd\u758a\u7387\u5206\u6790\u8207\u512a\u5316\uff08sqlserver\u91cd\u758a\uff09"},"content":{"rendered":"<h1 id=\"%e7%8e%87sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e9%87%8d%e7%96%8a%e7%8e%87%e5%88%86%e6%9e%90%e8%88%87%e5%84%aa%e5%8c%96%ef%bc%88sqlserver%e9%87%8d%e7%96%8a%ef%bc%89-jzMnyOvGEJ\">\u7387SQL Server\u6578\u64da\u5eab\u91cd\u758a\u7387\u5206\u6790\u8207\u512a\u5316\uff08sqlserver\u91cd\u758a\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u4f01\u696d\u7684\u904b\u71df\u81f3\u95dc\u91cd\u8981\u3002SQL Server\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u696d\u52d9\u5834\u666f\u4e2d\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u7279\u5225\u662f\u7576\u6578\u64da\u91cd\u758a\u7387\u904e\u9ad8\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0eSQL Server\u6578\u64da\u5eab\u7684\u91cd\u758a\u7387\u5206\u6790\u8207\u512a\u5316\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e9%87%8d%e7%96%8a%e7%8e%87%ef%bc%9f-jzMnyOvGEJ\">\u4ec0\u9ebc\u662f\u6578\u64da\u91cd\u758a\u7387\uff1f<\/h2>\n<p>\u6578\u64da\u91cd\u758a\u7387\u662f\u6307\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u67d0\u4e9b\u6578\u64da\u884c\u6216\u6578\u64da\u584a\u4e4b\u9593\u7684\u91cd\u8907\u7a0b\u5ea6\u3002\u7576\u6578\u64da\u91cd\u758a\u7387\u904e\u9ad8\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u6027\u80fd\u4e0b\u964d\u3001\u5b58\u5132\u7a7a\u9593\u6d6a\u8cbb\u4ee5\u53ca\u6578\u64da\u4e00\u81f4\u6027\u554f\u984c\u3002\u91cd\u758a\u7387\u7684\u5206\u6790\u53ef\u4ee5\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u8b58\u5225\u6f5b\u5728\u7684\u6027\u80fd\u74f6\u9838\uff0c\u4e26\u63a1\u53d6\u76f8\u61c9\u7684\u512a\u5316\u63aa\u65bd\u3002<\/p>\n<h2 id=\"%e9%87%8d%e7%96%8a%e7%8e%87%e7%9a%84%e5%88%86%e6%9e%90%e6%96%b9%e6%b3%95-jzMnyOvGEJ\">\u91cd\u758a\u7387\u7684\u5206\u6790\u65b9\u6cd5<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u5206\u6790\u6578\u64da\u91cd\u758a\u7387\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\u9032\u884c\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u7cfb\u7d71\u8996\u5716\uff1a<\/strong>SQL Server\u63d0\u4f9b\u4e86\u4e00\u4e9b\u7cfb\u7d71\u8996\u5716\uff0c\u5982 <code>sys.dm_db_index_usage_stats<\/code> \u548c <code>sys.dm_db_index_physical_stats<\/code>\uff0c\u53ef\u4ee5\u7528\u4f86\u7372\u53d6\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u6cc1\u548c\u7269\u7406\u72c0\u614b\u3002\u901a\u904e\u9019\u4e9b\u8996\u5716\uff0c\u53ef\u4ee5\u5206\u6790\u7d22\u5f15\u7684\u91cd\u758a\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u67e5\u8a62\u91cd\u8907\u6578\u64da\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u6aa2\u67e5\u8868\u4e2d\u662f\u5426\u5b58\u5728\u91cd\u8907\u7684\u6578\u64da\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8a62\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u91cd\u8907\u7684\u884c\uff1a<\/strong><\/li>\n<\/ul>\n<pre><code>SELECT column1, column2, COUNT(*)\nFROM your_table\nGROUP BY column1, column2\nHAVING COUNT(*) &gt; 1;<\/code><\/pre>\n<h2 id=\"%e9%87%8d%e7%96%8a%e7%8e%87%e7%9a%84%e5%84%aa%e5%8c%96%e6%96%b9%e6%b3%95-jzMnyOvGEJ\">\u91cd\u758a\u7387\u7684\u512a\u5316\u65b9\u6cd5<\/h2>\n<p>\u4e00\u65e6\u8b58\u5225\u51fa\u91cd\u758a\u6578\u64da\uff0c\u63a5\u4e0b\u4f86\u7684\u6b65\u9a5f\u662f\u9032\u884c\u512a\u5316\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u512a\u5316\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>\u522a\u9664\u91cd\u8907\u6578\u64da\uff1a<\/strong>\u6839\u64da\u696d\u52d9\u9700\u6c42\uff0c\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u91cd\u8907\u6578\u64da\u3002\u53ef\u4ee5\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\u4f86\u522a\u9664\u91cd\u8907\u884c\u3002<\/li>\n<li><strong>\u4f7f\u7528\u552f\u4e00\u7d04\u675f\uff1a<\/strong>\u5728\u8868\u4e2d\u6dfb\u52a0\u552f\u4e00\u7d04\u675f\u53ef\u4ee5\u9632\u6b62\u672a\u4f86\u63d2\u5165\u91cd\u8907\u6578\u64da\u3002\u4f8b\u5982\uff1a<\/strong><\/li>\n<\/ul>\n<pre><code>ALTER TABLE your_table\nADD CONSTRAINT unique_constraint_name UNIQUE (column1, column2);<\/code><\/pre>\n<li><strong>\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\uff1a<\/strong>\u91cd\u5efa\u7d22\u5f15\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u91cd\u758a\uff0c\u63d0\u5347\u67e5\u8a62\u6027\u80fd\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u91cd\u5efa\u7d22\u5f15\uff1a<\/strong><\/li>\n<\/ul>\n<pre><code>ALTER INDEX ALL ON your_table REBUILD;<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-jzMnyOvGEJ\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u91cd\u758a\u7387\u7684\u5206\u6790\u8207\u512a\u5316\u662f\u78ba\u4fddSQL Server\u6578\u64da\u5eab\u6027\u80fd\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u901a\u904e\u5b9a\u671f\u6aa2\u67e5\u6578\u64da\u91cd\u758a\u60c5\u6cc1\uff0c\u4e26\u63a1\u53d6\u76f8\u61c9\u7684\u512a\u5316\u63aa\u65bd\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u6578\u64da\u5eab\u7684\u6548\u7387\u548c\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9019\u4e9b\u63aa\u65bd\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6027\u80fd\uff0c\u9084\u80fd\u964d\u4f4e\u904b\u71df\u6210\u672c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\uff0c\u63d0\u5347\u696d\u52d9\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22SQL Server\u6578\u64da\u5eab\u91cd\u758a\u7387\u5206\u6790\u8207\u512a\u5316\u6280\u8853\uff0c\u63d0\u9ad8\u6027\u80fd\uff0c\u6e1b\u5c11\u8cc7\u6e90\u6d6a\u8cbb\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u9ad8\u6548\u904b\u884c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-168199","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168199","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=168199"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168199\/revisions"}],"predecessor-version":[{"id":168200,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168199\/revisions\/168200"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}