{"id":172675,"date":"2024-11-07T15:06:17","date_gmt":"2024-11-07T07:06:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/172675\/"},"modified":"2024-11-07T15:06:18","modified_gmt":"2024-11-07T07:06:18","slug":"%e5%a6%82%e4%bd%95%e6%9f%a5%e8%a9%a2sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e6%b2%92%e6%9c%89%e4%b8%bb%e9%8d%b5%e7%9a%84%e8%a1%a8%e4%b8%a6%e5%a2%9e%e5%8a%a0%e4%b8%bb%e9%8d%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/172675\/","title":{"rendered":"\u5982\u4f55\u67e5\u8a62SQL Server\u6578\u64da\u5eab\u6c92\u6709\u4e3b\u9375\u7684\u8868\u4e26\u589e\u52a0\u4e3b\u9375"},"content":{"rendered":"

\u5982\u4f55\u67e5\u8a62SQL Server\u6578\u64da\u5eab\u6c92\u6709\u4e3b\u9375\u7684\u8868\u4e26\u589e\u52a0\u4e3b\u9375<\/h1>\n

\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u4e3b\u9375\u662f\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u8868\u4e2d\u6bcf\u4e00\u884c\u6578\u64da\u7684\u91cd\u8981\u5143\u7d20\u3002\u6c92\u6709\u4e3b\u9375\u7684\u8868\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u91cd\u8907\u548c\u67e5\u8a62\u6548\u7387\u4f4e\u4e0b\u3002\u56e0\u6b64\uff0c\u4e86\u89e3\u5982\u4f55\u67e5\u8a62SQL Server\u4e2d\u6c92\u6709\u4e3b\u9375\u7684\u8868\u4e26\u70ba\u5176\u589e\u52a0\u4e3b\u9375\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u9019\u4e00\u904e\u7a0b\u3002<\/p>\n

\u67e5\u8a62\u6c92\u6709\u4e3b\u9375\u7684\u8868<\/h2>\n

\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u67e5\u8a62\u51fa\u6240\u6709\u6c92\u6709\u4e3b\u9375\u7684\u8868\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u7372\u53d6\u9019\u4e9b\u8868\u7684\u4fe1\u606f\uff1a<\/p>\n

SELECT \n    t.name AS TableName\nFROM \n    sys.tables t\nLEFT JOIN \n    sys.key_constraints kc ON t.object_id = kc.parent_object_id AND kc.type = 'PK'\nWHERE \n    kc.object_id IS NULL;<\/code><\/pre>\n
\u9019\u6bb5\u67e5\u8a62\u7684\u908f\u8f2f\u662f\u5f9e\u7cfb\u7d71\u8868\u4e2d\u9078\u64c7\u6240\u6709\u8868\uff0c\u4e26\u901a\u904e\u5de6\u9023\u63a5\u67e5\u627e\u4e3b\u9375\u7d04\u675f\u3002\u5982\u679c\u67d0\u500b\u8868\u7684\u4e3b\u9375\u7d04\u675f\u70ba\u7a7a\uff0c\u5247\u8a72\u8868\u5373\u70ba\u6c92\u6709\u4e3b\u9375\u7684\u8868\u3002<\/p>\n
\u70ba\u6c92\u6709\u4e3b\u9375\u7684\u8868\u589e\u52a0\u4e3b\u9375<\/h2>\n
\u5728\u78ba\u5b9a\u4e86\u54ea\u4e9b\u8868\u6c92\u6709\u4e3b\u9375\u4e4b\u5f8c\uff0c\u63a5\u4e0b\u4f86\u7684\u6b65\u9a5f\u662f\u70ba\u9019\u4e9b\u8868\u589e\u52a0\u4e3b\u9375\u3002\u589e\u52a0\u4e3b\u9375\u7684\u904e\u7a0b\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n
1. \u78ba\u5b9a\u4e3b\u9375\u5217<\/h3>\n
\u9996\u5148\uff0c\u60a8\u9700\u8981\u78ba\u5b9a\u54ea\u4e00\u5217\u6216\u54ea\u4e9b\u5217\u53ef\u4ee5\u4f5c\u70ba\u4e3b\u9375\u3002\u4e3b\u9375\u5217\u5fc5\u9808\u662f\u552f\u4e00\u7684\uff0c\u4e26\u4e14\u4e0d\u80fd\u5305\u542b\u7a7a\u503c\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u67d0\u4e00\u5217\u7684\u552f\u4e00\u6027\uff1a<\/p>\n
SELECT \n    ColumnName, COUNT(*)\nFROM \n    TableName\nGROUP BY \n    ColumnName\nHAVING \n    COUNT(*) > 1;<\/code><\/pre>\n
\u5982\u679c\u67e5\u8a62\u7d50\u679c\u70ba\u7a7a\uff0c\u5247\u8a72\u5217\u53ef\u4ee5\u8003\u616e\u4f5c\u70ba\u4e3b\u9375\u3002<\/p>\n
2. \u589e\u52a0\u4e3b\u9375\u7d04\u675f<\/h3>\n
\u4e00\u65e6\u78ba\u5b9a\u4e86\u4e3b\u9375\u5217\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u589e\u52a0\u4e3b\u9375\u7d04\u675f\uff1a<\/p>\n
ALTER TABLE TableName\nADD CONSTRAINT PK_TableName PRIMARY KEY (ColumnName);<\/code><\/pre>\n
\u5728\u9019\u88e1\uff0c\u60a8\u9700\u8981\u5c07\u201cTableName\u201d\u66ff\u63db\u70ba\u60a8\u7684\u8868\u540d\uff0c\u4e26\u5c07\u201cColumnName\u201d\u66ff\u63db\u70ba\u60a8\u9078\u64c7\u7684\u4e3b\u9375\u5217\u540d\u3002<\/p>\n
3. \u9a57\u8b49\u4e3b\u9375\u7684\u589e\u52a0<\/h3>\n
\u6700\u5f8c\uff0c\u60a8\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u7cfb\u7d71\u8868\u4f86\u9a57\u8b49\u4e3b\u9375\u662f\u5426\u6210\u529f\u6dfb\u52a0\uff1a<\/p>\n
SELECT \n    t.name AS TableName, \n    kc.name AS PrimaryKeyName\nFROM \n    sys.tables t\nJOIN \n    sys.key_constraints kc ON t.object_id = kc.parent_object_id\nWHERE \n    kc.type = 'PK';<\/code><\/pre>\n
\u9019\u6a23\uff0c\u60a8\u5c31\u53ef\u4ee5\u770b\u5230\u6240\u6709\u8868\u53ca\u5176\u5c0d\u61c9\u7684\u4e3b\u9375\u7d04\u675f\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728SQL Server\u4e2d\u67e5\u8a62\u6c92\u6709\u4e3b\u9375\u7684\u8868\u4e26\u70ba\u5176\u589e\u52a0\u4e3b\u9375\u662f\u4e00\u500b\u91cd\u8981\u7684\u6578\u64da\u5eab\u7ba1\u7406\u4efb\u52d9\u3002\u901a\u904e\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u8b58\u5225\u548c\u8655\u7406\u9019\u4e9b\u8868\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u67e5\u8a62\u6548\u7387\u3002\u5982\u679c\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u670d\u52d9\uff0c\u8acb\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u6216\u96f2\u4f3a\u670d\u5668<\/a>\u89e3\u6c7a\u65b9\u6848\uff0c\u4ee5\u6eff\u8db3\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u67e5\u8a62SQL Server\u4e2d\u6c92\u6709\u4e3b\u9375\u7684\u8868\uff0c\u4e26\u4e86\u89e3\u5982\u4f55\u70ba\u9019\u4e9b\u8868\u589e\u52a0\u4e3b\u9375\u4ee5\u63d0\u5347\u6578\u64da\u5b8c\u6574\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-172675","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172675","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=172675"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172675\/revisions"}],"predecessor-version":[{"id":172676,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172675\/revisions\/172676"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=172675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=172675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=172675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}