{"id":66341,"date":"2024-10-14T16:39:15","date_gmt":"2024-10-14T08:39:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66341\/"},"modified":"2024-10-14T16:39:15","modified_gmt":"2024-10-14T08:39:15","slug":"mssql%e4%b8%ad%e6%88%aa%e5%8f%96%e6%97%a5%e6%9c%9f%e4%b8%ad%e7%9a%84%e5%b9%b4%e4%bb%bd%ef%bc%88mssql%e6%88%aa%e5%8f%96%e5%b9%b4%e4%bb%bd%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66341\/","title":{"rendered":"MSSQL\u4e2d\u622a\u53d6\u65e5\u671f\u4e2d\u7684\u5e74\u4efd\uff08mssql\u622a\u53d6\u5e74\u4efd\uff09"},"content":{"rendered":"

MSSQL\u4e2d\u622a\u53d6\u65e5\u671f\u4e2d\u7684\u5e74\u4efd\uff08mssql\u622a\u53d6\u5e74\u4efd\uff09<\/h1>\n

\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528 Microsoft SQL Server\uff08MSSQL\uff09\u6642\uff0c\u958b\u767c\u8005\u7d93\u5e38\u9700\u8981\u5f9e\u65e5\u671f\u4e2d\u63d0\u53d6\u7279\u5b9a\u7684\u90e8\u5206\uff0c\u4f8b\u5982\u5e74\u4efd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 MSSQL \u4e2d\u622a\u53d6\u65e5\u671f\u4e2d\u7684\u5e74\u4efd\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n

\u70ba\u4ec0\u9ebc\u9700\u8981\u622a\u53d6\u5e74\u4efd<\/h2>\n

\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\uff0c\u958b\u767c\u8005\u53ef\u80fd\u9700\u8981\u6839\u64da\u5e74\u4efd\u9032\u884c\u6578\u64da\u5206\u6790\u6216\u5831\u544a\u3002\u4f8b\u5982\uff0c\u4f01\u696d\u53ef\u80fd\u5e0c\u671b\u5206\u6790\u67d0\u4e00\u7279\u5b9a\u5e74\u4efd\u7684\u92b7\u552e\u6578\u64da\uff0c\u6216\u662f\u6839\u64da\u5e74\u4efd\u4f86\u7be9\u9078\u5ba2\u6236\u8cc7\u6599\u3002\u900f\u904e\u622a\u53d6\u5e74\u4efd\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u9032\u884c\u9019\u4e9b\u64cd\u4f5c\u3002<\/p>\n

MSSQL\u4e2d\u622a\u53d6\u5e74\u4efd\u7684\u65b9\u6cd5<\/h2>\n

\u5728 MSSQL \u4e2d\uff0c\u6709\u5e7e\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u7528\u4f86\u622a\u53d6\u65e5\u671f\u4e2d\u7684\u5e74\u4efd\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528 YEAR \u51fd\u6578<\/h3>\n

\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u5167\u5efa\u7684 YEAR()<\/code> \u51fd\u6578\u3002\u9019\u500b\u51fd\u6578\u63a5\u53d7\u4e00\u500b\u65e5\u671f\u4f5c\u70ba\u53c3\u6578\uff0c\u4e26\u8fd4\u56de\u8a72\u65e5\u671f\u7684\u5e74\u4efd\u3002<\/p>\n

SELECT YEAR(GETDATE()) AS CurrentYear;<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u78bc\u5c07\u8fd4\u56de\u7576\u524d\u65e5\u671f\u7684\u5e74\u4efd\u3002<\/p>\n
2. \u4f7f\u7528 CAST \u6216 CONVERT \u51fd\u6578<\/h3>\n
\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u4f7f\u7528 CAST()<\/code> \u6216 CONVERT()<\/code> \u51fd\u6578\u5c07\u65e5\u671f\u8f49\u63db\u70ba\u5b57\u4e32\uff0c\u7136\u5f8c\u63d0\u53d6\u5e74\u4efd\u3002\u9019\u7a2e\u65b9\u6cd5\u96d6\u7136\u4e0d\u5982 YEAR()<\/code> \u51fd\u6578\u76f4\u63a5\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u6703\u66f4\u9748\u6d3b\u3002<\/p>\n
SELECT CAST(GETDATE() AS VARCHAR(4)) AS YearString;<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u7576\u524d\u65e5\u671f\u8f49\u63db\u70ba\u5b57\u4e32\uff0c\u4e26\u8fd4\u56de\u524d\u56db\u500b\u5b57\u7b26\uff0c\u5373\u5e74\u4efd\u3002<\/p>\n
3. \u4f7f\u7528 DATEPART \u51fd\u6578<\/h3>\n
\u6b64\u5916\uff0cDATEPART()<\/code> \u51fd\u6578\u4e5f\u53ef\u4ee5\u7528\u4f86\u63d0\u53d6\u5e74\u4efd\u3002\u9019\u500b\u51fd\u6578\u5141\u8a31\u7528\u6236\u6307\u5b9a\u8981\u63d0\u53d6\u7684\u65e5\u671f\u90e8\u5206\u3002<\/p>\n
SELECT DATEPART(YEAR, GETDATE()) AS YearPart;<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u7576\u524d\u65e5\u671f\u7684\u5e74\u4efd\uff0c\u8207 YEAR()<\/code> \u51fd\u6578\u7684\u6548\u679c\u76f8\u540c\u3002<\/p>\n
\u7bc4\u4f8b\uff1a\u5f9e\u8cc7\u6599\u8868\u4e2d\u63d0\u53d6\u5e74\u4efd<\/h2>\n
\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba Orders<\/code> \u7684\u8cc7\u6599\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u500b OrderDate<\/code> \u6b04\u4f4d\uff0c\u8a18\u9304\u4e86\u6bcf\u7b46\u8a02\u55ae\u7684\u65e5\u671f\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u63d0\u53d6\u6240\u6709\u8a02\u55ae\u7684\u5e74\u4efd\uff1a<\/p>\n
SELECT OrderID, YEAR(OrderDate) AS OrderYear\nFROM Orders;<\/code><\/pre>\n
\u9019\u6bb5\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u7b46\u8a02\u55ae\u7684 ID \u53ca\u5176\u5c0d\u61c9\u7684\u5e74\u4efd\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728 MSSQL \u4e2d\uff0c\u622a\u53d6\u65e5\u671f\u4e2d\u7684\u5e74\u4efd\u662f\u4e00\u500b\u5e38\u898b\u4e14\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u900f\u904e\u4f7f\u7528 YEAR()<\/code>\u3001CAST()<\/code>\u3001CONVERT()<\/code> \u548c DATEPART()<\/code> \u51fd\u6578\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9e\u65e5\u671f\u4e2d\u63d0\u53d6\u51fa\u5e74\u4efd\uff0c\u9032\u800c\u9032\u884c\u6578\u64da\u5206\u6790\u548c\u5831\u544a\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\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u5176\u4ed6\u61c9\u7528\uff0c\u6211\u5011\u7684 \u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728MSSQL\u4e2d\uff0c\u4f7f\u7528YEAR\u51fd\u6570\u8f7b\u677e\u622a\u53d6\u65e5\u671f\u4e2d\u7684\u5e74\u4efd\uff0c\u63d0\u5347\u6570\u636e\u5904\u7406\u6548\u7387\uff0c\u7b80\u5316\u67e5\u8be2\u64cd\u4f5c\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-66341","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66341","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=66341"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66341\/revisions"}],"predecessor-version":[{"id":66342,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66341\/revisions\/66342"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}