{"id":138743,"date":"2024-10-31T15:48:18","date_gmt":"2024-10-31T07:48:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138743\/"},"modified":"2024-10-31T15:48:19","modified_gmt":"2024-10-31T07:48:19","slug":"sql-server%e6%a0%b9%e6%93%9a%e8%aa%9e%e8%a8%80%e6%9f%a5%e8%a9%a2%e4%be%86%e8%bf%94%e5%9b%9e%e4%b8%8d%e5%90%8c%e7%9a%84%e7%b5%90%e6%9e%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138743\/","title":{"rendered":"SQL Server\u6839\u64da\u8a9e\u8a00\u67e5\u8a62\u4f86\u8fd4\u56de\u4e0d\u540c\u7684\u7d50\u679c"},"content":{"rendered":"

SQL Server\u6839\u64da\u8a9e\u8a00\u67e5\u8a62\u4f86\u8fd4\u56de\u4e0d\u540c\u7684\u7d50\u679c<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cSQL Server\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u4fc2\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u696d\u52d9\u5834\u666f\u3002\u96a8\u8457\u5168\u7403\u5316\u7684\u767c\u5c55\uff0c\u4f01\u696d\u9700\u8981\u652f\u6301\u591a\u8a9e\u8a00\u7684\u6578\u64da\u67e5\u8a62\uff0c\u4ee5\u4fbf\u80fd\u5920\u66f4\u597d\u5730\u670d\u52d9\u65bc\u4e0d\u540c\u8a9e\u8a00\u7684\u7528\u6236\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728SQL Server\u4e2d\u6839\u64da\u8a9e\u8a00\u67e5\u8a62\u4f86\u8fd4\u56de\u4e0d\u540c\u7684\u7d50\u679c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u591a\u8a9e\u8a00\u652f\u6301\u7684\u5fc5\u8981\u6027<\/h2>\n

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\u4f7f\u7528\u8cc7\u6599\u8868\u4f86\u5b58\u5132\u591a\u8a9e\u8a00\u5167\u5bb9<\/h2>\n

\u4e00\u7a2e\u5e38\u898b\u7684\u505a\u6cd5\u662f\u4f7f\u7528\u8cc7\u6599\u8868\u4f86\u5b58\u5132\u591a\u8a9e\u8a00\u5167\u5bb9\u3002\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u7522\u54c1\u8cc7\u6599\u8868\uff0c\u4e26\u5e0c\u671b\u6839\u64da\u7528\u6236\u7684\u8a9e\u8a00\u8fd4\u56de\u7522\u54c1\u540d\u7a31\u3002\u53ef\u4ee5\u8a2d\u8a08\u4e00\u500b\u540d\u70ba\u7684\u8cc7\u6599\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n

\nCREATE TABLE ProductTranslations (\n    ProductID INT,\n    LanguageCode NVARCHAR(10),\n    ProductName NVARCHAR(100),\n    PRIMARY KEY (ProductID, LanguageCode)\n);\n<\/code><\/pre>\n
\u5728\u9019\u500b\u8cc7\u6599\u8868\u4e2d\uff0cProductID<\/code>\u8868\u793a\u7522\u54c1\u7684\u552f\u4e00\u6a19\u8b58\uff0cLanguageCode<\/code>\u8868\u793a\u8a9e\u8a00\u4ee3\u78bc\uff08\u4f8b\u5982\uff0c’en’\u8868\u793a\u82f1\u8a9e\uff0c’zh’\u8868\u793a\u4e2d\u6587\uff09\uff0c\u800cProductName<\/code>\u5247\u662f\u5c0d\u61c9\u8a9e\u8a00\u7684\u7522\u54c1\u540d\u7a31\u3002<\/p>\n
\u67e5\u8a62\u591a\u8a9e\u8a00\u5167\u5bb9<\/h2>\n
\u7576\u7528\u6236\u767c\u9001\u67e5\u8a62\u6642\uff0c\u6211\u5011\u53ef\u4ee5\u6839\u64da\u7528\u6236\u7684\u8a9e\u8a00\u4ee3\u78bc\u4f86\u8fd4\u56de\u76f8\u61c9\u7684\u7522\u54c1\u540d\u7a31\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u67e5\u8a62\uff1a<\/p>\n
\nDECLARE @UserLanguage NVARCHAR(10) = 'zh';\n\nSELECT p.ProductID, pt.ProductName\nFROM Products p\nJOIN ProductTranslations pt ON p.ProductID = pt.ProductID\nWHERE pt.LanguageCode = @UserLanguage;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86\u8b8a\u91cf@UserLanguage<\/code>\u4f86\u6307\u5b9a\u7528\u6236\u7684\u8a9e\u8a00\uff0c\u7136\u5f8c\u901a\u904e\u806f\u63a5Products<\/code>\u548cProductTranslations<\/code>\u8cc7\u6599\u8868\u4f86\u7372\u53d6\u5c0d\u61c9\u7684\u7522\u54c1\u540d\u7a31\u3002<\/p>\n
\u4f7f\u7528CASE\u8a9e\u53e5\u8fd4\u56de\u4e0d\u540c\u8a9e\u8a00\u7684\u7d50\u679c<\/h2>\n
\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u4f7f\u7528CASE<\/code>\u8a9e\u53e5\u4f86\u6839\u64da\u8a9e\u8a00\u4ee3\u78bc\u8fd4\u56de\u4e0d\u540c\u7684\u7d50\u679c\u3002\u9019\u7a2e\u65b9\u6cd5\u9069\u5408\u65bc\u8cc7\u6599\u91cf\u8f03\u5c0f\u7684\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n
\nSELECT ProductID,\n       CASE \n           WHEN @UserLanguage = 'en' THEN ProductName_EN\n           WHEN @UserLanguage = 'zh' THEN ProductName_ZH\n           ELSE ProductName_EN\n       END AS ProductName\nFROM Products;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u6839\u64da\u7528\u6236\u7684\u8a9e\u8a00\u4ee3\u78bc\u9078\u64c7\u76f8\u61c9\u7684\u7522\u54c1\u540d\u7a31\u3002\u5982\u679c\u7528\u6236\u7684\u8a9e\u8a00\u4ee3\u78bc\u4e0d\u5728\u6211\u5011\u7684\u9078\u64c7\u7bc4\u570d\u5167\uff0c\u5247\u9ed8\u8a8d\u8fd4\u56de\u82f1\u8a9e\u540d\u7a31\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728SQL Server\u4e2d\u6839\u64da\u8a9e\u8a00\u67e5\u8a62\u4f86\u8fd4\u56de\u4e0d\u540c\u7684\u7d50\u679c\u662f\u4e00\u500b\u91cd\u8981\u7684\u529f\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u4f01\u696d\u66f4\u597d\u5730\u670d\u52d9\u65bc\u591a\u8a9e\u8a00\u7528\u6236\u3002\u901a\u904e\u8a2d\u8a08\u5408\u9069\u7684\u8cc7\u6599\u8868\u7d50\u69cb\u548c\u67e5\u8a62\u8a9e\u53e5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u9019\u4e00\u9700\u6c42\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u8cc7\u6599\u8868\u5b58\u5132\u591a\u8a9e\u8a00\u5167\u5bb9\uff0c\u9084\u662f\u5229\u7528CASE<\/code>\u8a9e\u53e5\u9032\u884c\u689d\u4ef6\u67e5\u8a62\uff0c\u9019\u4e9b\u65b9\u6cd5\u90fd\u80fd\u6709\u6548\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n
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\u63a2\u7d22\u5982\u4f55\u5728SQL Server\u4e2d\u6839\u64da\u8a9e\u8a00\u67e5\u8a62\u8fd4\u56de\u4e0d\u540c\u7d50\u679c\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u7684\u9748\u6d3b\u6027\u8207\u6e96\u78ba\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-138743","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138743","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=138743"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138743\/revisions"}],"predecessor-version":[{"id":138744,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138743\/revisions\/138744"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}