{"id":140630,"date":"2024-10-31T20:47:20","date_gmt":"2024-10-31T12:47:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/140630\/"},"modified":"2024-10-31T20:47:21","modified_gmt":"2024-10-31T12:47:21","slug":"sql-server%e7%84%a1%e9%8e%96%e6%8a%80%e8%a1%93%ef%bc%9a%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ae%89%e5%85%a8%e9%ab%98%e6%95%88%e7%8e%87%ef%bc%88sqlserver%e4%b8%8d%e5%8a%a0%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/140630\/","title":{"rendered":"SQL Server\u7121\u9396\u6280\u8853\uff1a\u5be6\u73fe\u6578\u64da\u5b89\u5168\u9ad8\u6548\u7387\uff08sqlserver\u4e0d\u52a0\u9396\uff09"},"content":{"rendered":"<h1 id=\"sql-server%e7%84%a1%e9%8e%96%e6%8a%80%e8%a1%93%ef%bc%9a%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ae%89%e5%85%a8%e9%ab%98%e6%95%88%e7%8e%87-dbxHjkPwZB\">SQL Server\u7121\u9396\u6280\u8853\uff1a\u5be6\u73fe\u6578\u64da\u5b89\u5168\u9ad8\u6548\u7387<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u5b89\u5168\u6027\u81f3\u95dc\u91cd\u8981\u3002SQL Server\u4f5c\u70ba\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6280\u8853\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u53ef\u7528\u6027\u3002\u5176\u4e2d\uff0c\u7121\u9396\u6280\u8853\uff08\u6216\u7a31\u70ba\u4e0d\u52a0\u9396\u6280\u8853\uff09\u662f\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u5728\u63d0\u9ad8\u6578\u64da\u8655\u7406\u6548\u7387\u7684\u540c\u6642\uff0c\u6e1b\u5c11\u6578\u64da\u885d\u7a81\u548c\u9396\u5b9a\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"%e7%84%a1%e9%8e%96%e6%8a%80%e8%a1%93%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-dbxHjkPwZB\">\u7121\u9396\u6280\u8853\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u7121\u9396\u6280\u8853\u7684\u6838\u5fc3\u601d\u60f3\u662f\u5141\u8a31\u591a\u500b\u4e8b\u52d9\u540c\u6642\u8a2a\u554f\u6578\u64da\uff0c\u800c\u4e0d\u9700\u8981\u4e92\u76f8\u7b49\u5f85\u9396\u7684\u91cb\u653e\u3002\u9019\u7a2e\u6280\u8853\u4e3b\u8981\u4f9d\u8cf4\u65bc\u7248\u672c\u63a7\u5236\u548c\u884c\u7d1a\u9396\u5b9a\uff0c\u5f9e\u800c\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u8b80\u53d6\u548c\u5beb\u5165\u64cd\u4f5c\u3002SQL Server\u4e2d\u7684\u7121\u9396\u6280\u8853\u4e3b\u8981\u901a\u904e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u5f0f\u5be6\u73fe\uff1a<\/p>\n<ul>\n<li><strong>\u5feb\u7167\u9694\u96e2\uff08Snapshot Isolation\uff09<\/strong>\uff1a\u9019\u7a2e\u9694\u96e2\u7d1a\u5225\u5141\u8a31\u4e8b\u52d9\u5728\u8b80\u53d6\u6578\u64da\u6642\uff0c\u7372\u53d6\u6578\u64da\u7684\u5feb\u7167\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u8a2a\u554f\u7576\u524d\u6578\u64da\u3002\u9019\u6a23\uff0c\u8b80\u53d6\u64cd\u4f5c\u4e0d\u6703\u88ab\u5beb\u5165\u64cd\u4f5c\u963b\u585e\u3002<\/li>\n<li><strong>\u8b80\u53d6\u5df2\u63d0\u4ea4\u5feb\u7167\uff08Read Committed Snapshot Isolation, RCSI\uff09<\/strong>\uff1a\u9019\u662f\u4e00\u7a2e\u6539\u9032\u7684\u5feb\u7167\u9694\u96e2\uff0c\u80fd\u5920\u5728\u8b80\u53d6\u5df2\u63d0\u4ea4\u7684\u6578\u64da\u6642\uff0c\u4f7f\u7528\u5feb\u7167\u4f86\u907f\u514d\u9396\u5b9a\u3002<\/li>\n<li><strong>\u884c\u7d1a\u9396\u5b9a\uff08Row-Level Locking\uff09<\/strong>\uff1a\u9019\u7a2e\u9396\u5b9a\u65b9\u5f0f\u50c5\u9396\u5b9a\u6b63\u5728\u88ab\u64cd\u4f5c\u7684\u884c\uff0c\u800c\u4e0d\u662f\u6574\u500b\u8868\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u4e26\u767c\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%84%a1%e9%8e%96%e6%8a%80%e8%a1%93%e7%9a%84%e5%84%aa%e5%8b%a2-dbxHjkPwZB\">\u7121\u9396\u6280\u8853\u7684\u512a\u52e2<\/h2>\n<p>\u7121\u9396\u6280\u8853\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u5176\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7528\u6027\u3002\u5177\u9ad4\u4f86\u8aaa\uff0c\u7121\u9396\u6280\u8853\u7684\u512a\u52e2\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u63d0\u9ad8\u4e26\u767c\u6027<\/strong>\uff1a\u591a\u500b\u4e8b\u52d9\u53ef\u4ee5\u540c\u6642\u9032\u884c\uff0c\u800c\u4e0d\u6703\u56e0\u70ba\u9396\u5b9a\u800c\u4e92\u76f8\u963b\u585e\uff0c\u9019\u5c0d\u65bc\u9ad8\u4e26\u767c\u7684\u61c9\u7528\u5834\u666f\u5c24\u70ba\u91cd\u8981\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u6b7b\u9396\u7684\u98a8\u96aa<\/strong>\uff1a\u7531\u65bc\u4e8b\u52d9\u4e4b\u9593\u4e0d\u9700\u8981\u7b49\u5f85\u9396\u7684\u91cb\u653e\uff0c\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u7684\u6982\u7387\u5927\u5927\u964d\u4f4e\u3002<\/li>\n<li><strong>\u63d0\u5347\u6578\u64da\u8b80\u53d6\u6548\u7387<\/strong>\uff1a\u8b80\u53d6\u64cd\u4f5c\u4e0d\u518d\u53d7\u5230\u5beb\u5165\u64cd\u4f5c\u7684\u5f71\u97ff\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u8b80\u53d6\u901f\u5ea6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e7%8f%be%e7%84%a1%e9%8e%96%e6%8a%80%e8%a1%93%e7%9a%84%e7%a4%ba%e4%be%8b-dbxHjkPwZB\">\u5be6\u73fe\u7121\u9396\u6280\u8853\u7684\u793a\u4f8b<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u5be6\u73fe\u7121\u9396\u6280\u8853\u7684\u904e\u7a0b\u76f8\u5c0d\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u5feb\u7167\u9694\u96e2\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u555f\u7528\u6578\u64da\u5eab\u7684\u5feb\u7167\u9694\u96e2\nALTER DATABASE YourDatabaseName\nSET ALLOW_SNAPSHOT_ISOLATION ON;\n\n-- \u4f7f\u7528\u5feb\u7167\u9694\u96e2\u9032\u884c\u67e5\u8a62\nSET TRANSACTION ISOLATION LEVEL SNAPSHOT;\nBEGIN TRANSACTION;\n\nSELECT * FROM YourTableName WHERE YourCondition;\n\n-- \u63d0\u4ea4\u4e8b\u52d9\nCOMMIT TRANSACTION;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u555f\u7528\u4e86\u5feb\u7167\u9694\u96e2\uff0c\u7136\u5f8c\u5728\u67e5\u8a62\u6642\u8a2d\u7f6e\u4e86\u4e8b\u52d9\u7684\u9694\u96e2\u7d1a\u5225\u70ba\u5feb\u7167\u3002\u9019\u6a23\uff0c\u67e5\u8a62\u64cd\u4f5c\u5c07\u4e0d\u6703\u88ab\u5176\u4ed6\u4e8b\u52d9\u7684\u5beb\u5165\u64cd\u4f5c\u6240\u963b\u585e\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-dbxHjkPwZB\">\u7d50\u8ad6<\/h2>\n<p>SQL Server\u7684\u7121\u9396\u6280\u8853\u70ba\u6578\u64da\u5eab\u7ba1\u7406\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9ad8\u6548\u4e14\u5b89\u5168\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u4f7f\u7528\u5feb\u7167\u9694\u96e2\u548c\u884c\u7d1a\u9396\u5b9a\u7b49\u6280\u8853\uff0c\u7121\u9396\u6280\u8853\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u6e1b\u5c11\u6b7b\u9396\u7684\u98a8\u96aa\uff0c\u4e26\u63d0\u5347\u6578\u64da\u8b80\u53d6\u7684\u6548\u7387\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\u548c\u61c9\u7528\u9700\u6c42\u7684\u63d0\u5347\uff0c\u7121\u9396\u6280\u8853\u5c07\u5728\u672a\u4f86\u7684\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u626e\u6f14\u8d8a\u4f86\u8d8a\u91cd\u8981\u7684\u89d2\u8272\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u74b0\u5883\u4e2d\u5be6\u65bd\u9019\u4e9b\u6280\u8853\u6709\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a>\u7684\u8cc7\u8a0a\uff0c\u8acb\u96a8\u6642\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22SQL Server\u7121\u9396\u6280\u8853\uff0c\u5be6\u73fe\u6578\u64da\u5b89\u5168\u8207\u9ad8\u6548\u7387\uff0c\u63d0\u5347\u6027\u80fd\uff0c\u907f\u514d\u9396\u5b9a\u5e36\u4f86\u7684\u5ef6\u9072\u8207\u74f6\u9838\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-140630","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140630","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=140630"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140630\/revisions"}],"predecessor-version":[{"id":140631,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140630\/revisions\/140631"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=140630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=140630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=140630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}