{"id":65329,"date":"2024-10-14T13:35:17","date_gmt":"2024-10-14T05:35:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/65329\/"},"modified":"2024-10-14T13:35:17","modified_gmt":"2024-10-14T05:35:17","slug":"mssql%e8%a8%98%e9%8c%84%e6%97%a5%e6%9c%9f%e7%b2%be%e7%a2%ba%e5%88%b0%e7%a7%92%ef%bc%9a%e5%a6%82%e4%bd%95%e5%8f%aa%e5%8f%96%e6%97%a5%e6%9c%9f%ef%bc%88mssql%e5%8f%aa%e5%8f%96%e6%97%a5%e6%9c%9f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/65329\/","title":{"rendered":"mssql\u8a18\u9304\u65e5\u671f\u7cbe\u78ba\u5230\u79d2\uff1a\u5982\u4f55\u53ea\u53d6\u65e5\u671f\uff08mssql\u53ea\u53d6\u65e5\u671f\uff09"},"content":{"rendered":"<h1 id=\"mssql%e8%a8%98%e9%8c%84%e6%97%a5%e6%9c%9f%e7%b2%be%e7%a2%ba%e5%88%b0%e7%a7%92%ef%bc%9a%e5%a6%82%e4%bd%95%e5%8f%aa%e5%8f%96%e6%97%a5%e6%9c%9f%ef%bc%88mssql%e5%8f%aa%e5%8f%96%e6%97%a5%e6%9c%9f%ef%bc%89-EnWnTafnIa\">MSSQL\u8a18\u9304\u65e5\u671f\u7cbe\u78ba\u5230\u79d2\uff1a\u5982\u4f55\u53ea\u53d6\u65e5\u671f\uff08MSSQL\u53ea\u53d6\u65e5\u671f\uff09<\/h1>\n<p>\u5728\u4f7f\u7528MSSQL\uff08Microsoft SQL Server\uff09\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002\u7279\u5225\u662f\u5728\u9700\u8981\u7cbe\u78ba\u5230\u79d2\u7684\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u5f9e\u5b8c\u6574\u7684\u65e5\u671f\u6642\u9593\u4e2d\u63d0\u53d6\u51fa\u50c5\u6709\u7684\u65e5\u671f\u90e8\u5206\uff0c\u6210\u70ba\u4e86\u8a31\u591a\u958b\u767c\u8005\u548c\u6578\u64da\u5206\u6790\u5e2b\u6240\u9762\u81e8\u7684\u6311\u6230\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728MSSQL\u4e2d\u53ea\u53d6\u65e5\u671f\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"mssql%e4%b8%ad%e7%9a%84%e6%97%a5%e6%9c%9f%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-EnWnTafnIa\">MSSQL\u4e2d\u7684\u65e5\u671f\u6642\u9593\u985e\u578b<\/h2>\n<p>MSSQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u65e5\u671f\u6642\u9593\u985e\u578b\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>DATETIME&lt;\/<\/code>\uff1a\u7bc4\u570d\u5f9e1753\u5e74\u52309999\u5e74\uff0c\u7cbe\u78ba\u52303.33\u6beb\u79d2\u3002<\/li>\n<li><code>SMALLDATETIME<\/code>\uff1a\u7bc4\u570d\u5f9e1900\u5e74\u52302079\u5e74\uff0c\u7cbe\u78ba\u52301\u5206\u9418\u3002<\/li>\n<li><code>DATE<\/code>\uff1a\u50c5\u5305\u542b\u65e5\u671f\u90e8\u5206\uff0c\u7bc4\u570d\u5f9e0001\u5e74\u52309999\u5e74\u3002<\/li>\n<li><code>TIME<\/code>\uff1a\u50c5\u5305\u542b\u6642\u9593\u90e8\u5206\uff0c\u7cbe\u78ba\u5230100\u7d0d\u79d2\u3002<\/li>\n<li><code>DATETIME2<\/code>\uff1a\u7bc4\u570d\u5f9e0001\u5e74\u52309999\u5e74\uff0c\u7cbe\u78ba\u5230100\u7d0d\u79d2\u3002<\/li>\n<\/ul>\n<p>\u5728\u9019\u4e9b\u985e\u578b\u4e2d\uff0c<code>DATETIME<\/code>\u548c<code>DATETIME2<\/code>\u662f\u6700\u5e38\u7528\u7684\uff0c\u56e0\u70ba\u5b83\u5011\u80fd\u5920\u5b58\u5132\u5b8c\u6574\u7684\u65e5\u671f\u548c\u6642\u9593\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%be%9edatetime%e4%b8%ad%e6%8f%90%e5%8f%96%e6%97%a5%e6%9c%9f-EnWnTafnIa\">\u5982\u4f55\u5f9eDATETIME\u4e2d\u63d0\u53d6\u65e5\u671f<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u63d0\u53d6\u65e5\u671f\u7684\u5e38\u7528\u65b9\u6cd5\u6709\u5e7e\u7a2e\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u5e38\u898b\u7684\u4f8b\u5b50\uff1a<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8cast%e5%87%bd%e6%95%b8-EnWnTafnIa\">\u4f7f\u7528CAST\u51fd\u6578<\/h3>\n<p>\u53ef\u4ee5\u4f7f\u7528<code>CAST<\/code>\u51fd\u6578\u5c07<code>DATETIME<\/code>\u8f49\u63db\u70ba<code>DATE<\/code>\u985e\u578b\uff0c\u9019\u6a23\u5c31\u80fd\u5920\u53ea\u4fdd\u7559\u65e5\u671f\u90e8\u5206\uff1a<\/p>\n<pre><code>SELECT CAST(GETDATE() AS DATE) AS CurrentDate;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u7576\u524d\u65e5\u671f\uff0c\u6642\u9593\u90e8\u5206\u5c07\u88ab\u5ffd\u7565\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8convert%e5%87%bd%e6%95%b8-EnWnTafnIa\">\u4f7f\u7528CONVERT\u51fd\u6578<\/h3>\n<p>\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u4f7f\u7528<code>CONVERT<\/code>\u51fd\u6578\uff0c\u9019\u500b\u51fd\u6578\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u683c\u5f0f\u9078\u64c7\uff1a<\/p>\n<pre><code>SELECT CONVERT(DATE, GETDATE()) AS CurrentDate;<\/code><\/pre>\n<p>\u9019\u540c\u6a23\u6703\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\uff0c\u4e26\u4e14\u6642\u9593\u90e8\u5206\u6703\u88ab\u53bb\u9664\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8format%e5%87%bd%e6%95%b8%ef%bc%88sql-server-2012%e5%8f%8a%e4%bb%a5%e4%b8%8a%e7%89%88%e6%9c%ac%ef%bc%89-EnWnTafnIa\">\u4f7f\u7528FORMAT\u51fd\u6578\uff08SQL Server 2012\u53ca\u4ee5\u4e0a\u7248\u672c\uff09<\/h3>\n<p>\u5982\u679c\u4f60\u4f7f\u7528\u7684\u662fSQL Server 2012\u6216\u66f4\u9ad8\u7248\u672c\uff0c\u53ef\u4ee5\u4f7f\u7528<code>FORMAT<\/code>\u51fd\u6578\u4f86\u683c\u5f0f\u5316\u65e5\u671f\uff1a<\/p>\n<pre><code>SELECT FORMAT(GETDATE(), 'yyyy-MM-dd') AS CurrentDate;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u7576\u524d\u65e5\u671f\uff0c\u683c\u5f0f\u70ba\u201c\u5e74-\u6708-\u65e5\u201d\u3002<\/p>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-EnWnTafnIa\">\u5be6\u969b\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u5728\u5be6\u969b\u7684\u6578\u64da\u5eab\u61c9\u7528\u4e2d\uff0c\u63d0\u53d6\u65e5\u671f\u7684\u9700\u6c42\u975e\u5e38\u666e\u904d\u3002\u4f8b\u5982\uff0c\u5728\u751f\u6210\u5831\u544a\u6642\uff0c\u53ef\u80fd\u9700\u8981\u6839\u64da\u65e5\u671f\u9032\u884c\u5206\u7d44\u6216\u7be9\u9078\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u6839\u64da\u65e5\u671f\u9032\u884c\u5206\u7d44\uff1a<\/p>\n<pre><code>SELECT CAST(OrderDate AS DATE) AS OrderDate, COUNT(*) AS TotalOrders\nFROM Orders\nGROUP BY CAST(OrderDate AS DATE)\nORDER BY OrderDate;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u6839\u64da\u8a02\u55ae\u65e5\u671f\u9032\u884c\u5206\u7d44\uff0c\u4e26\u8a08\u7b97\u6bcf\u500b\u65e5\u671f\u7684\u8a02\u55ae\u7e3d\u6578\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-EnWnTafnIa\">\u7e3d\u7d50<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u63d0\u53d6\u65e5\u671f\u90e8\u5206\u7684\u65b9\u6cd5\u6709\u591a\u7a2e\uff0c\u5305\u62ec\u4f7f\u7528<code>CAST<\/code>\u3001<code>CONVERT<\/code>\u548c<code>FORMAT<\/code>\u51fd\u6578\u3002\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u8655\u7406\u65e5\u671f\u6642\u9593\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u7684\u6548\u7387\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u6216\u5176\u4ed6<code>\u4e91\u670d\u52a1\u5668<\/code>\u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a> \u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728MSSQL\u4e2d\u5c07\u65e5\u671f\u7cbe\u78ba\u5230\u79d2\u7684\u8a18\u9304\u4e2d\u63d0\u53d6\u50c5\u65e5\u671f\u90e8\u5206\uff0c\u7c21\u5316\u6578\u64da\u67e5\u8a62\u8207\u7ba1\u7406\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-65329","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/65329","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=65329"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/65329\/revisions"}],"predecessor-version":[{"id":65330,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/65329\/revisions\/65330"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=65329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=65329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=65329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}