{"id":66407,"date":"2024-10-14T17:15:19","date_gmt":"2024-10-14T09:15:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66407\/"},"modified":"2024-10-14T17:15:19","modified_gmt":"2024-10-14T09:15:19","slug":"mssql%e8%87%aa%e5%8b%95%e8%a8%ad%e7%bd%ae%e5%ba%8f%e5%88%97%e8%99%9f%e6%b8%85%e9%9b%b6%e7%9a%84%e5%af%a6%e8%b8%90%ef%bc%88mssql%e8%87%aa%e5%8b%95%e7%b7%a8%e8%99%9f%e6%b8%85%e9%9b%b6%ef%bc%89-2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66407\/","title":{"rendered":"MSSQL\u81ea\u52d5\u8a2d\u7f6e\u5e8f\u5217\u865f\u6e05\u96f6\u7684\u5be6\u8e10\uff08mssql\u81ea\u52d5\u7de8\u865f\u6e05\u96f6\uff09"},"content":{"rendered":"

MSSQL\u81ea\u52d5\u8a2d\u7f6e\u5e8f\u5217\u865f\u6e05\u96f6\u7684\u5be6\u8e10\uff08mssql\u81ea\u52d5\u7de8\u865f\u6e05\u96f6\uff09<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cMSSQL\uff08Microsoft SQL Server\uff09\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u96a8\u8457\u6578\u64da\u7684\u589e\u9577\uff0c\u5e8f\u5217\u865f\u7684\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MSSQL\u4e2d\u81ea\u52d5\u8a2d\u7f6e\u5e8f\u5217\u865f\u6e05\u96f6\u7684\u5be6\u8e10\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u5e8f\u5217\u865f\uff1f<\/h2>\n

\u5e8f\u5217\u865f\u662f\u4e00\u7a2e\u81ea\u52d5\u751f\u6210\u7684\u552f\u4e00\u6a19\u8b58\u7b26\uff0c\u901a\u5e38\u7528\u65bc\u6a19\u8b58\u6578\u64da\u8868\u4e2d\u7684\u6bcf\u4e00\u884c\u3002MSSQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u751f\u6210\u5e8f\u5217\u865f\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u662f\u4f7f\u7528IDENTITY\u5c6c\u6027\u3002\u9019\u7a2e\u5c6c\u6027\u5141\u8a31\u7528\u6236\u5728\u63d2\u5165\u65b0\u8a18\u9304\u6642\u81ea\u52d5\u751f\u6210\u4e00\u500b\u905e\u589e\u7684\u6574\u6578\u503c\u3002<\/p>\n

\u70ba\u4ec0\u9ebc\u9700\u8981\u6e05\u96f6\u5e8f\u5217\u865f\uff1f<\/h2>\n

\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u5c07\u5e8f\u5217\u865f\u91cd\u7f6e\u70ba\u96f6\u3002\u4f8b\u5982\uff0c\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\uff0c\u7576\u6578\u64da\u88ab\u522a\u9664\u6216\u91cd\u5efa\u6642\uff0c\u91cd\u7f6e\u5e8f\u5217\u865f\u53ef\u4ee5\u5e6b\u52a9\u4fdd\u6301\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u6b64\u5916\uff0c\u5c0d\u65bc\u67d0\u4e9b\u696d\u52d9\u9700\u6c42\uff0c\u53ef\u80fd\u9700\u8981\u5728\u7279\u5b9a\u6642\u9593\u9ede\u91cd\u65b0\u958b\u59cb\u7de8\u865f\u3002<\/p>\n

\u5982\u4f55\u5728MSSQL\u4e2d\u81ea\u52d5\u6e05\u96f6\u5e8f\u5217\u865f<\/h2>\n

\u5728MSSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u4f86\u81ea\u52d5\u6e05\u96f6\u5e8f\u5217\u865f\uff1a<\/p>\n

1. \u4f7f\u7528DBCC CHECKIDENT\u547d\u4ee4<\/h3>\n

DBCC CHECKIDENT\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u91cd\u7f6eIDENTITY\u5217\u7684\u7576\u524d\u503c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u6b64\u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n

DBCC CHECKIDENT ('table_name', RESEED, new_value);<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u5c07\u540d\u70ba\u201cEmployees\u201d\u7684\u8868\u7684\u5e8f\u5217\u865f\u91cd\u7f6e\u70ba0\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
DBCC CHECKIDENT ('Employees', RESEED, 0);<\/code><\/pre>\n
2. \u81ea\u52d5\u5316\u6e05\u96f6\u904e\u7a0b<\/h3>\n
\u70ba\u4e86\u81ea\u52d5\u5316\u5e8f\u5217\u865f\u7684\u6e05\u96f6\u904e\u7a0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u89f8\u767c\u5668\u6216\u8a08\u5283\u4efb\u52d9\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u89f8\u767c\u5668\u7684\u793a\u4f8b\uff1a<\/p>\n
CREATE TRIGGER ResetIdentity\nON Employees\nAFTER DELETE\nAS\nBEGIN\n    DECLARE @count INT;\n    SELECT @count = COUNT(*) FROM Employees;\n    IF @count = 0\n    BEGIN\n        DBCC CHECKIDENT ('Employees', RESEED, 0);\n    END\nEND;<\/code><\/pre>\n
\u9019\u500b\u89f8\u767c\u5668\u6703\u5728\u522a\u9664\u6240\u6709\u8a18\u9304\u5f8c\u81ea\u52d5\u91cd\u7f6e\u5e8f\u5217\u865f\u3002<\/p>\n
3. \u4f7f\u7528\u8a08\u5283\u4efb\u52d9<\/h3>\n
\u5982\u679c\u9700\u8981\u5b9a\u671f\u6e05\u96f6\u5e8f\u5217\u865f\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528SQL Server\u4ee3\u7406\u4f86\u8a2d\u7f6e\u8a08\u5283\u4efb\u52d9\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u8a08\u5283\u4efb\u52d9\u793a\u4f8b\uff1a<\/p>\n
EXEC sp_add_job @job_name = 'ResetIdentityJob';\nEXEC sp_add_jobstep @job_name = 'ResetIdentityJob',\n    @step_name = 'ResetIdentityStep',\n    @subsystem = 'TSQL',\n    @command = 'DBCC CHECKIDENT (''Employees'', RESEED, 0);';\nEXEC sp_add_schedule @schedule_name = 'DailyResetSchedule',\n    @freq_type = 4, -- \u6bcf\u65e5\n    @freq_interval = 1;\nEXEC sp_attach_schedule @job_name = 'ResetIdentityJob',\n    @schedule_name = 'DailyResetSchedule';\nEXEC sp_add_jobserver @job_name = 'ResetIdentityJob';<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u5275\u5efa\u4e00\u500b\u6bcf\u65e5\u57f7\u884c\u7684\u8a08\u5283\u4efb\u52d9\uff0c\u5b9a\u671f\u91cd\u7f6e\u5e8f\u5217\u865f\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728MSSQL\u4e2d\uff0c\u81ea\u52d5\u8a2d\u7f6e\u5e8f\u5217\u865f\u6e05\u96f6\u662f\u4e00\u500b\u91cd\u8981\u7684\u7ba1\u7406\u4efb\u52d9\u3002\u901a\u904e\u4f7f\u7528DBCC CHECKIDENT\u547d\u4ee4\u3001\u89f8\u767c\u5668\u548c\u8a08\u5283\u4efb\u52d9\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u5e8f\u5217\u865f\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u9069\u7528\u65bc\u6e2c\u8a66\u74b0\u5883\uff0c\u4e5f\u53ef\u4ee5\u5728\u751f\u7522\u74b0\u5883\u4e2d\u6839\u64da\u696d\u52d9\u9700\u6c42\u9032\u884c\u8abf\u6574\u3002<\/p>\n
\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u9999\u6e2fVPS<\/a><\/code>\u548c\u96f2\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22MSSQL\u81ea\u52d5\u8a2d\u7f6e\u5e8f\u5217\u865f\u6e05\u96f6\u7684\u5be6\u8e10\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7ba1\u7406\u81ea\u52d5\u7de8\u865f\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u8207\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-66407","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66407","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=66407"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66407\/revisions"}],"predecessor-version":[{"id":66408,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66407\/revisions\/66408"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}