{"id":139654,"date":"2024-10-31T19:32:19","date_gmt":"2024-10-31T11:32:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/139654\/"},"modified":"2024-10-31T19:32:20","modified_gmt":"2024-10-31T11:32:20","slug":"sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e9%81%bf%e5%85%8d%e9%98%bb%e5%a1%9e%e7%9a%84%e6%ad%a5%e9%a9%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/139654\/","title":{"rendered":"SQL Server\u6578\u64da\u5eab\u4e2d\u907f\u514d\u963b\u585e\u7684\u6b65\u9a5f"},"content":{"rendered":"

SQL Server\u6578\u64da\u5eab\u4e2d\u907f\u514d\u963b\u585e\u7684\u6b65\u9a5f<\/h1>\n

\u5728\u73fe\u4ee3\u7684\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u963b\u585e\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528SQL Server\u6642\u3002\u7576\u591a\u500b\u9032\u7a0b\u540c\u6642\u5617\u8a66\u8a2a\u554f\u76f8\u540c\u7684\u8cc7\u6e90\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u751a\u81f3\u7cfb\u7d71\u5d29\u6f70\u3002\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u9ad8\u6548\u904b\u884c\uff0c\u4e86\u89e3\u5982\u4f55\u907f\u514d\u963b\u585e\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u6709\u6548\u7684\u6b65\u9a5f\uff0c\u4ee5\u5e6b\u52a9\u7ba1\u7406\u54e1\u6e1b\u5c11SQL Server\u4e2d\u7684\u963b\u585e\u60c5\u6cc1\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u963b\u585e\uff1f<\/h2>\n

\u963b\u585e\u662f\u6307\u4e00\u500b\u9032\u7a0b\u5728\u7b49\u5f85\u53e6\u4e00\u500b\u9032\u7a0b\u91cb\u653e\u8cc7\u6e90\u7684\u60c5\u6cc1\u3002\u5728SQL Server\u4e2d\uff0c\u9019\u901a\u5e38\u767c\u751f\u5728\u591a\u500b\u4e8b\u52d9\u540c\u6642\u5617\u8a66\u4fee\u6539\u76f8\u540c\u7684\u6578\u64da\u884c\u6642\u3002\u7576\u4e00\u500b\u4e8b\u52d9\u9396\u5b9a\u4e86\u67d0\u500b\u8cc7\u6e90\uff0c\u800c\u53e6\u4e00\u500b\u4e8b\u52d9\u8a66\u5716\u8a2a\u554f\u8a72\u8cc7\u6e90\u6642\uff0c\u5f8c\u8005\u5c07\u88ab\u8feb\u7b49\u5f85\uff0c\u9019\u5c31\u5f62\u6210\u4e86\u963b\u585e\u3002<\/p>\n

\u907f\u514d\u963b\u585e\u7684\u6b65\u9a5f<\/h2>\n

1. \u4f7f\u7528\u9069\u7576\u7684\u9694\u96e2\u7d1a\u5225<\/h3>\n

SQL Server\u63d0\u4f9b\u4e86\u591a\u7a2e\u9694\u96e2\u7d1a\u5225\uff0c\u6bcf\u7a2e\u7d1a\u5225\u5c0d\u4e8b\u52d9\u7684\u884c\u70ba\u6709\u4e0d\u540c\u7684\u5f71\u97ff\u3002\u9078\u64c7\u5408\u9069\u7684\u9694\u96e2\u7d1a\u5225\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u963b\u585e\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u201c\u8b80\u53d6\u5df2\u63d0\u4ea4\u201d\u9694\u96e2\u7d1a\u5225\u53ef\u4ee5\u6e1b\u5c11\u8b80\u53d6\u64cd\u4f5c\u7684\u963b\u585e\uff0c\u800c\u201c\u5feb\u7167\u9694\u96e2\u201d\u5247\u5141\u8a31\u8b80\u53d6\u64cd\u4f5c\u4e0d\u88ab\u5beb\u5165\u64cd\u4f5c\u963b\u585e\u3002<\/p>\n

SET TRANSACTION ISOLATION LEVEL READ COMMITTED;<\/code><\/pre>\n
2. \u512a\u5316\u67e5\u8a62<\/h3>\n
\u67e5\u8a62\u7684\u6548\u7387\u76f4\u63a5\u5f71\u97ff\u5230\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u901a\u904e\u512a\u5316\u67e5\u8a62\uff0c\u53ef\u4ee5\u6e1b\u5c11\u57f7\u884c\u6642\u9593\uff0c\u5f9e\u800c\u964d\u4f4e\u963b\u585e\u7684\u53ef\u80fd\u6027\u3002\u4f7f\u7528\u7d22\u5f15\u3001\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5168\u8868\u6383\u63cf\u4ee5\u53ca\u7c21\u5316\u8907\u96dc\u7684\u67e5\u8a62\u90fd\u662f\u6709\u6548\u7684\u512a\u5316\u65b9\u6cd5\u3002<\/p>\n
3. \u4f7f\u7528\u884c\u7d1a\u9396<\/h3>\n
\u5728SQL Server\u4e2d\uff0c\u9396\u7684\u7c92\u5ea6\u8d8a\u5c0f\uff0c\u963b\u585e\u7684\u53ef\u80fd\u6027\u5c31\u8d8a\u4f4e\u3002\u4f7f\u7528\u884c\u7d1a\u9396\u800c\u4e0d\u662f\u9801\u7d1a\u9396\u6216\u8868\u7d1a\u9396\uff0c\u53ef\u4ee5\u6e1b\u5c11\u5176\u4ed6\u4e8b\u52d9\u7684\u7b49\u5f85\u6642\u9593\u3002\u9019\u53ef\u4ee5\u901a\u904e\u8a2d\u7f6e\u9069\u7576\u7684\u9396\u63d0\u793a\u4f86\u5be6\u73fe\u3002<\/p>\n
SELECT * FROM YourTable WITH (ROWLOCK) WHERE YourCondition;<\/code><\/pre>\n
4. \u5b9a\u671f\u6aa2\u67e5\u548c\u6e05\u7406\u9396<\/h3>\n
\u5b9a\u671f\u6aa2\u67e5\u7576\u524d\u7684\u9396\u5b9a\u60c5\u6cc1\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u6f5b\u5728\u7684\u963b\u585e\u554f\u984c\u3002\u4f7f\u7528SQL Server\u7684\u52d5\u614b\u7ba1\u7406\u8996\u5716\uff08DMV\uff09\u4f86\u76e3\u63a7\u9396\u5b9a\u548c\u963b\u585e\u60c5\u6cc1\uff0c\u4e26\u53ca\u6642\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u9396\u3002<\/p>\n
SELECT * FROM sys.dm_tran_locks;<\/code><\/pre>\n
5. \u4f7f\u7528\u975e\u9396\u5b9a\u8b80\u53d6<\/h3>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u975e\u9396\u5b9a\u8b80\u53d6\u4f86\u907f\u514d\u963b\u585e\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528\u201c\u5feb\u7167\u9694\u96e2\u201d\u6216\u201c\u8b80\u53d6\u672a\u63d0\u4ea4\u201d\u4f86\u5be6\u73fe\uff0c\u9019\u6a23\u53ef\u4ee5\u5728\u4e0d\u9396\u5b9a\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u8b80\u53d6\u64cd\u4f5c\u3002<\/p>\n
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;<\/code><\/pre>\n
\u7d50\u8ad6<\/h2>\n
\u963b\u585e\u662fSQL Server\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u554f\u984c\uff0c\u901a\u904e\u63a1\u53d6\u9069\u7576\u7684\u63aa\u65bd\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u5176\u5f71\u97ff\u3002\u9078\u64c7\u5408\u9069\u7684\u9694\u96e2\u7d1a\u5225\u3001\u512a\u5316\u67e5\u8a62\u3001\u4f7f\u7528\u884c\u7d1a\u9396\u3001\u5b9a\u671f\u6aa2\u67e5\u9396\u4ee5\u53ca\u4f7f\u7528\u975e\u9396\u5b9a\u8b80\u53d6\u90fd\u662f\u6709\u6548\u7684\u7b56\u7565\u3002\u9019\u4e9b\u6b65\u9a5f\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u9084\u80fd\u63d0\u5347\u7528\u6236\u7684\u6574\u9ad4\u9ad4\u9a57\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u60a8\u7684\u6578\u64da\u5eab\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u548c\u53ef\u9760\u7684\u74b0\u5883\u4f86\u904b\u884c\u60a8\u7684SQL Server\u6578\u64da\u5eab\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5728SQL Server\u6578\u64da\u5eab\u4e2d\u907f\u514d\u963b\u585e\u7684\u6709\u6548\u6b65\u9a5f\uff0c\u63d0\u5347\u6027\u80fd\u4e26\u78ba\u4fdd\u6578\u64da\u8655\u7406\u7684\u6d41\u66a2\u6027\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-139654","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139654","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=139654"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139654\/revisions"}],"predecessor-version":[{"id":139655,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139654\/revisions\/139655"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=139654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=139654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=139654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}