{"id":142019,"date":"2024-10-31T22:19:45","date_gmt":"2024-10-31T14:19:45","guid":{"rendered":"https:\/\/server.hk\/cnblog\/142019\/"},"modified":"2024-10-31T22:19:46","modified_gmt":"2024-10-31T14:19:46","slug":"sql-%e4%b8%ad%e7%82%ba%e4%bb%80%e9%ba%bc%e7%b6%93%e5%b8%b8%e8%a6%81%e5%8a%a0-nolock%ef%bc%9f-2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/142019\/","title":{"rendered":"SQL \u4e2d\u70ba\u4ec0\u9ebc\u7d93\u5e38\u8981\u52a0 Nolock\uff1f"},"content":{"rendered":"<h1 id=\"sql-%e4%b8%ad%e7%82%ba%e4%bb%80%e9%ba%bc%e7%b6%93%e5%b8%b8%e8%a6%81%e5%8a%a0-nolock%ef%bc%9f-BbGSHABAok\">SQL \u4e2d\u70ba\u4ec0\u9ebc\u7d93\u5e38\u8981\u52a0 Nolock\uff1f<\/h1>\n<p>\u5728 SQL Server \u4e2d\uff0c<code>Nolock<\/code> \u662f\u4e00\u500b\u5e38\u7528\u7684\u67e5\u8a62\u63d0\u793a\uff0c\u4e3b\u8981\u7528\u65bc\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u7576\u6211\u5011\u5728\u57f7\u884c\u67e5\u8a62\u6642\uff0c\u6578\u64da\u5eab\u7cfb\u7d71\u6703\u4f7f\u7528\u9396\u4f86\u4fdd\u8b77\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u591a\u500b\u4e8b\u52d9\u540c\u6642\u4fee\u6539\u540c\u4e00\u6578\u64da\u800c\u5c0e\u81f4\u7684\u885d\u7a81\u3002\u7136\u800c\uff0c\u9019\u4e9b\u9396\u4e5f\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u7684\u5ef6\u9072\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4f75\u767c\u7684\u74b0\u5883\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u70ba\u4ec0\u9ebc\u5728 SQL \u67e5\u8a62\u4e2d\u7d93\u5e38\u4f7f\u7528 <code>Nolock<\/code>\uff0c\u4ee5\u53ca\u5b83\u7684\u512a\u7f3a\u9ede\u3002<\/p>\n<h2 id=\"nolock-%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-BbGSHABAok\">Nolock \u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p><code>Nolock<\/code> \u63d0\u793a\u5141\u8a31\u67e5\u8a62\u5728\u4e0d\u7372\u53d6\u9396\u7684\u60c5\u6cc1\u4e0b\u8b80\u53d6\u6578\u64da\u3002\u9019\u610f\u5473\u8457\u67e5\u8a62\u53ef\u4ee5\u5728\u5176\u4ed6\u4e8b\u52d9\u6b63\u5728\u9032\u884c\u7684\u60c5\u6cc1\u4e0b\u57f7\u884c\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u7684\u901f\u5ea6\u3002\u4f7f\u7528 <code>Nolock<\/code> \u7684\u67e5\u8a62\u4e0d\u6703\u963b\u585e\u5176\u4ed6\u4e8b\u52d9\uff0c\u4e5f\u4e0d\u6703\u88ab\u5176\u4ed6\u4e8b\u52d9\u963b\u585e\uff0c\u9019\u5c0d\u65bc\u9700\u8981\u5feb\u901f\u7372\u53d6\u6578\u64da\u7684\u5834\u666f\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-nolock-%e7%9a%84%e5%a0%b4%e6%99%af-BbGSHABAok\">\u4f7f\u7528 Nolock \u7684\u5834\u666f<\/h2>\n<ul>\n<li><strong>\u5831\u544a\u67e5\u8a62\uff1a<\/strong>\u5728\u751f\u6210\u5831\u544a\u6642\uff0c\u901a\u5e38\u9700\u8981\u8b80\u53d6\u5927\u91cf\u6578\u64da\u3002\u5982\u679c\u9019\u4e9b\u67e5\u8a62\u4e0d\u9700\u8981\u5373\u6642\u7684\u6578\u64da\u4e00\u81f4\u6027\uff0c\u4f7f\u7528 <code>Nolock<\/code> \u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u6578\u64da\u5206\u6790\uff1a<\/strong>\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u6642\uff0c\u5206\u6790\u5e2b\u53ef\u80fd\u4e0d\u9700\u8981\u6700\u65b0\u7684\u6578\u64da\uff0c\u53ea\u9700\u7372\u53d6\u4e00\u500b\u5feb\u7167\u3002\u6b64\u6642\uff0c<code>Nolock<\/code> \u53ef\u4ee5\u5e6b\u52a9\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li><strong>\u9ad8\u4f75\u767c\u74b0\u5883\uff1a<\/strong>\u5728\u9ad8\u4f75\u767c\u7684\u61c9\u7528\u4e2d\uff0c\u4f7f\u7528 <code>Nolock<\/code> \u53ef\u4ee5\u6e1b\u5c11\u9396\u7af6\u722d\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"nolock-%e7%9a%84%e5%84%aa%e9%bb%9e-BbGSHABAok\">Nolock \u7684\u512a\u9ede<\/h2>\n<p>\u4f7f\u7528 <code>Nolock<\/code> \u7684\u4e3b\u8981\u512a\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u63d0\u9ad8\u6027\u80fd\uff1a<\/strong>\u56e0\u70ba\u67e5\u8a62\u4e0d\u9700\u8981\u7b49\u5f85\u9396\u7684\u91cb\u653e\uff0c\u67e5\u8a62\u901f\u5ea6\u901a\u5e38\u6703\u66f4\u5feb\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u6b7b\u9396\uff1a<\/strong>\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e2d\uff0c\u4f7f\u7528 <code>Nolock<\/code> \u53ef\u4ee5\u6e1b\u5c11\u56e0\u9396\u7af6\u722d\u800c\u5c0e\u81f4\u7684\u6b7b\u9396\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u53ef\u7528\u6027\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528 <code>Nolock<\/code> \u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7d71\u7684\u53ef\u7528\u6027\uff0c\u56e0\u70ba\u67e5\u8a62\u4e0d\u6703\u56e0\u70ba\u9396\u800c\u88ab\u963b\u585e\u3002<\/li>\n<\/ul>\n<h2 id=\"nolock-%e7%9a%84%e7%bc%ba%e9%bb%9e-BbGSHABAok\">Nolock \u7684\u7f3a\u9ede<\/h2>\n<p>\u5118\u7ba1 <code>Nolock<\/code> \u6709\u5176\u512a\u9ede\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u6f5b\u5728\u7684\u7f3a\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u8b80\u53d6\u4e0d\u4e00\u81f4\u7684\u6578\u64da\uff1a<\/strong>\u4f7f\u7528 <code>Nolock<\/code> \u53ef\u80fd\u6703\u5c0e\u81f4\u8b80\u53d6\u5230\u672a\u63d0\u4ea4\u7684\u6578\u64da\uff0c\u9019\u53ef\u80fd\u6703\u5f71\u97ff\u6578\u64da\u7684\u6e96\u78ba\u6027\u3002<\/li>\n<li><strong>\u810f\u8b80\uff1a<\/strong>\u7576\u5176\u4ed6\u4e8b\u52d9\u6b63\u5728\u4fee\u6539\u6578\u64da\u6642\uff0c\u4f7f\u7528 <code>Nolock<\/code> \u53ef\u80fd\u6703\u8b80\u53d6\u5230\u4e0d\u6b63\u78ba\u7684\u6578\u64da\uff0c\u9019\u88ab\u7a31\u70ba\u810f\u8b80\u3002<\/li>\n<li><strong>\u4e0d\u9069\u7528\u65bc\u6240\u6709\u5834\u666f\uff1a<\/strong>\u5728\u9700\u8981\u6578\u64da\u4e00\u81f4\u6027\u7684\u5834\u666f\u4e2d\uff0c\u4f7f\u7528 <code>Nolock<\/code> \u53ef\u80fd\u6703\u5c0e\u81f4\u554f\u984c\uff0c\u56e0\u6b64\u9700\u8981\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-nolock-BbGSHABAok\">\u5982\u4f55\u4f7f\u7528 Nolock<\/h2>\n<p>\u5728 SQL \u67e5\u8a62\u4e2d\u4f7f\u7528 <code>Nolock<\/code> \u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u5728\u67e5\u8a62\u4e2d\u6dfb\u52a0 <code>WITH (NOLOCK)<\/code> \u63d0\u793a\u5373\u53ef\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM YourTable WITH (NOLOCK) WHERE YourCondition;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u5728\u4e0d\u7372\u53d6\u9396\u7684\u60c5\u6cc1\u4e0b\u57f7\u884c\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BbGSHABAok\">\u7e3d\u7d50<\/h2>\n<p>\u5728 SQL \u67e5\u8a62\u4e2d\u4f7f\u7528 <code>Nolock<\/code> \u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e2d\u3002\u7136\u800c\uff0c\u958b\u767c\u8005\u5728\u4f7f\u7528 <code>Nolock<\/code> \u6642\u5fc5\u9808\u8b39\u614e\uff0c\u56e0\u70ba\u5b83\u53ef\u80fd\u5c0e\u81f4\u8b80\u53d6\u4e0d\u4e00\u81f4\u7684\u6578\u64da\u3002\u5728\u9078\u64c7\u4f7f\u7528 <code>Nolock<\/code> \u7684\u6642\u5019\uff0c\u61c9\u6839\u64da\u5177\u9ad4\u7684\u696d\u52d9\u9700\u6c42\u548c\u6578\u64da\u4e00\u81f4\u6027\u8981\u6c42\u4f86\u505a\u51fa\u6c7a\u7b56\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5728 SQL \u4e2d\u4f7f\u7528 NOLOCK \u7684\u539f\u56e0\uff0c\u5982\u4f55\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u4e26\u907f\u514d\u9396\u5b9a\u554f\u984c\uff0c\u63d0\u5347\u6578\u64da\u8b80\u53d6\u6548\u7387\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-142019","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/142019","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=142019"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/142019\/revisions"}],"predecessor-version":[{"id":142020,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/142019\/revisions\/142020"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=142019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=142019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=142019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}