{"id":152937,"date":"2024-11-02T03:16:25","date_gmt":"2024-11-01T19:16:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152937\/"},"modified":"2024-11-02T03:16:26","modified_gmt":"2024-11-01T19:16:26","slug":"%e5%88%9d%e5%ad%b8-sql-server-%e7%ad%86%e8%a8%98%e4%b9%8b%e4%bf%ae%e6%94%b9%e8%a1%a8%e7%b5%90%e6%a7%8b%e7%9a%84%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152937\/","title":{"rendered":"\u521d\u5b78 SQL Server \u7b46\u8a18\u4e4b\u4fee\u6539\u8868\u7d50\u69cb\u7684\u793a\u4f8b\u4ee3\u78bc"},"content":{"rendered":"

\u521d\u5b78 SQL Server \u7b46\u8a18\u4e4b\u4fee\u6539\u8868\u7d50\u69cb\u7684\u793a\u4f8b\u4ee3\u78bc<\/h1>\n

\u5728\u5b78\u7fd2 SQL Server \u7684\u904e\u7a0b\u4e2d\uff0c\u4fee\u6539\u8868\u7d50\u69cb\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u6280\u80fd\u3002\u7121\u8ad6\u662f\u6dfb\u52a0\u65b0\u6b04\u4f4d\u3001\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u6b04\u4f4d\uff0c\u9084\u662f\u4fee\u6539\u73fe\u6709\u6b04\u4f4d\u7684\u6578\u64da\u985e\u578b\uff0c\u9019\u4e9b\u64cd\u4f5c\u90fd\u80fd\u5e6b\u52a9\u6211\u5011\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u5eab\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 SQL Server \u7684 ALTER TABLE<\/code> \u8a9e\u53e5\u4f86\u4fee\u6539\u8868\u7d50\u69cb\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u793a\u4f8b\u4ee3\u78bc\u4ee5\u4f9b\u53c3\u8003\u3002<\/p>\n

1. \u6dfb\u52a0\u65b0\u6b04\u4f4d<\/h2>\n

\u5982\u679c\u9700\u8981\u5728\u73fe\u6709\u7684\u8868\u4e2d\u6dfb\u52a0\u65b0\u6b04\u4f4d\uff0c\u53ef\u4ee5\u4f7f\u7528 ALTER TABLE<\/code> \u8a9e\u53e5\u7d50\u5408 ADD<\/code> \u5b50\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n

ALTER TABLE Employees\nADD BirthDate DATE;<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5411 Employees<\/code> \u8868\u4e2d\u6dfb\u52a0\u4e86\u4e00\u500b\u540d\u70ba BirthDate<\/code> \u7684\u65b0\u6b04\u4f4d\uff0c\u6578\u64da\u985e\u578b\u70ba DATE<\/code>\u3002<\/p>\n
2. \u522a\u9664\u6b04\u4f4d<\/h2>\n
\u5982\u679c\u67d0\u500b\u6b04\u4f4d\u4e0d\u518d\u9700\u8981\uff0c\u53ef\u4ee5\u4f7f\u7528 ALTER TABLE<\/code> \u8a9e\u53e5\u7d50\u5408 DROP COLUMN<\/code> \u5b50\u53e5\u4f86\u522a\u9664\u5b83\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
ALTER TABLE Employees\nDROP COLUMN BirthDate;<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u5f9e Employees<\/code> \u8868\u4e2d\u522a\u9664 BirthDate<\/code> \u6b04\u4f4d\u3002<\/p>\n
3. \u4fee\u6539\u6b04\u4f4d\u6578\u64da\u985e\u578b<\/h2>\n
\u6709\u6642\u5019\uff0c\u53ef\u80fd\u9700\u8981\u4fee\u6539\u73fe\u6709\u6b04\u4f4d\u7684\u6578\u64da\u985e\u578b\u3002\u9019\u53ef\u4ee5\u901a\u904e ALTER TABLE<\/code> \u8a9e\u53e5\u7d50\u5408 ALTER COLUMN<\/code> \u5b50\u53e5\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n
ALTER TABLE Employees\nALTER COLUMN LastName NVARCHAR(100);<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5c07 LastName<\/code> \u6b04\u4f4d\u7684\u6578\u64da\u985e\u578b\u4fee\u6539\u70ba NVARCHAR(100)<\/code>\uff0c\u9019\u6a23\u53ef\u4ee5\u5b58\u5132\u66f4\u9577\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n
4. \u4fee\u6539\u6b04\u4f4d\u540d\u7a31<\/h2>\n
\u5982\u679c\u9700\u8981\u66f4\u6539\u6b04\u4f4d\u7684\u540d\u7a31\uff0c\u53ef\u4ee5\u4f7f\u7528 sp_rename<\/code> \u5b58\u5132\u904e\u7a0b\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
EXEC sp_rename 'Employees.LastName', 'Surname', 'COLUMN';<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07 Employees<\/code> \u8868\u4e2d\u7684 LastName<\/code> \u6b04\u4f4d\u540d\u7a31\u66f4\u6539\u70ba Surname<\/code>\u3002<\/p>\n
5. \u6dfb\u52a0\u7d04\u675f\u689d\u4ef6<\/h2>\n
\u5728\u4fee\u6539\u8868\u7d50\u69cb\u6642\uff0c\u9084\u53ef\u4ee5\u6dfb\u52a0\u7d04\u675f\u689d\u4ef6\u4f86\u5f37\u5316\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u4f8b\u5982\uff0c\u6dfb\u52a0\u4e00\u500b\u4e3b\u9375\u7d04\u675f\uff1a<\/p>\n
ALTER TABLE Employees\nADD CONSTRAINT PK_EmployeeID PRIMARY KEY (EmployeeID);<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u5728 Employees<\/code> \u8868\u7684 EmployeeID<\/code> \u6b04\u4f4d\u4e0a\u6dfb\u52a0\u4e3b\u9375\u7d04\u675f\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728 SQL Server \u4e2d\uff0c\u4f7f\u7528 ALTER TABLE<\/code> \u8a9e\u53e5\u53ef\u4ee5\u9748\u6d3b\u5730\u4fee\u6539\u8868\u7d50\u69cb\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u7dad\u8b77\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f\u6dfb\u52a0\u3001\u522a\u9664\u6b04\u4f4d\uff0c\u9084\u662f\u4fee\u6539\u6b04\u4f4d\u7684\u6578\u64da\u985e\u578b\u548c\u540d\u7a31\uff0c\u9019\u4e9b\u64cd\u4f5c\u90fd\u80fd\u5e6b\u52a9\u6211\u5011\u66f4\u597d\u5730\u9069\u61c9\u696d\u52d9\u9700\u6c42\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u9700\u8981\u7a69\u5b9a\u7684 \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u9748\u6d3b\u7684 \u96f2\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u521d\u5b78 SQL Server \u7b46\u8a18\uff0c\u63d0\u4f9b\u4fee\u6539\u8868\u7d50\u69cb\u7684\u793a\u4f8b\u4ee3\u78bc\uff0c\u5e6b\u52a9\u65b0\u624b\u5feb\u901f\u638c\u63e1\u57fa\u672c\u64cd\u4f5c\u8207\u6280\u5de7\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-152937","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152937","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=152937"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152937\/revisions"}],"predecessor-version":[{"id":152938,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152937\/revisions\/152938"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}