{"id":71065,"date":"2024-10-15T14:43:16","date_gmt":"2024-10-15T06:43:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/71065\/"},"modified":"2024-10-15T14:43:16","modified_gmt":"2024-10-15T06:43:16","slug":"mssql%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e5%bf%ab%e9%80%9f%e6%ba%96%e7%a2%ba%e6%8e%a7%e5%88%b6%e6%99%82%e9%96%93%e6%a0%bc%e5%bc%8f%e7%9a%84%e5%8a%a0%e6%b8%9b%ef%bc%88mssql%e6%99%82%e9%96%93","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/71065\/","title":{"rendered":"MSSQL\u6578\u64da\u5eab\u5982\u4f55\u5feb\u901f\u6e96\u78ba\u63a7\u5236\u6642\u9593\u683c\u5f0f\u7684\u52a0\u6e1b\uff08mssql\u6642\u9593\u683c\u5f0f\u52a0\u6e1b\uff09"},"content":{"rendered":"<h1 id=\"mssql%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e5%bf%ab%e9%80%9f%e6%ba%96%e7%a2%ba%e6%8e%a7%e5%88%b6%e6%99%82%e9%96%93%e6%a0%bc%e5%bc%8f%e7%9a%84%e5%8a%a0%e6%b8%9b-lNAOnIEtCS\">MSSQL\u6578\u64da\u5eab\u5982\u4f55\u5feb\u901f\u6e96\u78ba\u63a7\u5236\u6642\u9593\u683c\u5f0f\u7684\u52a0\u6e1b<\/h1>\n<p>\u5728\u73fe\u4ee3\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6642\u9593\u7684\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528MSSQL\uff08Microsoft SQL Server\uff09\u6642\uff0c\u6b63\u78ba\u5730\u63a7\u5236\u6642\u9593\u683c\u5f0f\u7684\u52a0\u6e1b\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MSSQL\u4e2d\u5feb\u901f\u4e14\u6e96\u78ba\u5730\u9032\u884c\u6642\u9593\u683c\u5f0f\u7684\u52a0\u6e1b\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"mssql%e4%b8%ad%e7%9a%84%e6%99%82%e9%96%93%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-lNAOnIEtCS\">MSSQL\u4e2d\u7684\u6642\u9593\u6578\u64da\u985e\u578b<\/h2>\n<p>MSSQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u6642\u9593\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>DATETIME<\/code>\uff1a\u5305\u542b\u65e5\u671f\u548c\u6642\u9593\uff0c\u7bc4\u570d\u5f9e1753\u5e74\u52309999\u5e74\u3002<\/li>\n<li><code>DATE<\/code>\uff1a\u50c5\u5305\u542b\u65e5\u671f\uff0c\u7bc4\u570d\u5f9e0001\u5e74\u52309999\u5e74\u3002<\/li>\n<li><code>TIME<\/code>\uff1a\u50c5\u5305\u542b\u6642\u9593\uff0c\u7bc4\u570d\u5f9e00:00:00.0000000\u523023:59:59.9999999\u3002<\/li>\n<li><code>DATETIME2<\/code>\uff1a\u6bd4<code>DATETIME<\/code>\u66f4\u7cbe\u78ba\uff0c\u7bc4\u570d\u66f4\u5ee3\u3002<\/li>\n<\/ul>\n<p>\u4e86\u89e3\u9019\u4e9b\u6578\u64da\u985e\u578b\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u9032\u4e00\u6b65\u63a2\u8a0e\u5982\u4f55\u9032\u884c\u6642\u9593\u7684\u52a0\u6e1b\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e6%99%82%e9%96%93%e5%8a%a0%e6%b8%9b%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-lNAOnIEtCS\">\u6642\u9593\u52a0\u6e1b\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u6642\u9593\u7684\u52a0\u6e1b\u64cd\u4f5c\u4e3b\u8981\u4f7f\u7528<code>DATEADD<\/code>\u548c<code>DATEDIFF<\/code>\u51fd\u6578\u4f86\u5be6\u73fe\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8dateadd%e5%87%bd%e6%95%b8-lNAOnIEtCS\">\u4f7f\u7528DATEADD\u51fd\u6578<\/h3>\n<p><code>DATEADD<\/code>\u51fd\u6578\u7528\u65bc\u5c07\u6307\u5b9a\u7684\u6642\u9593\u9593\u9694\u6dfb\u52a0\u5230\u65e5\u671f\u4e2d\u3002\u5176\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DATEADD(datepart, number, date)<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>datepart<\/code>\u53ef\u4ee5\u662f\u5e74\u3001\u6708\u3001\u65e5\u3001\u6642\u3001\u5206\u3001\u79d2\u7b49\uff0c<code>number<\/code>\u662f\u8981\u6dfb\u52a0\u7684\u6578\u91cf\uff0c<code>date<\/code>\u662f\u8981\u64cd\u4f5c\u7684\u65e5\u671f\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5728\u7576\u524d\u65e5\u671f\u4e0a\u52a0\u4e0a5\u5929\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT DATEADD(DAY, 5, GETDATE()) AS NewDate;<\/code><\/pre>\n<h3 id=\"%e4%bd%bf%e7%94%a8datediff%e5%87%bd%e6%95%b8-lNAOnIEtCS\">\u4f7f\u7528DATEDIFF\u51fd\u6578<\/h3>\n<p><code>DATEDIFF<\/code>\u51fd\u6578\u7528\u65bc\u8a08\u7b97\u5169\u500b\u65e5\u671f\u4e4b\u9593\u7684\u5dee\u7570\u3002\u5176\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DATEDIFF(datepart, startdate, enddate)<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u8a08\u7b97\u4eca\u5929\u8207\u4e00\u500b\u7279\u5b9a\u65e5\u671f\u4e4b\u9593\u7684\u5929\u6578\u5dee\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT DATEDIFF(DAY, '2023-01-01', GETDATE()) AS DaysDifference;<\/code><\/pre>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e6%a1%88%e4%be%8b-lNAOnIEtCS\">\u5be6\u969b\u61c9\u7528\u6848\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u8a02\u55ae\u8868\uff0c\u5305\u542b\u8a02\u55ae\u7684\u5275\u5efa\u6642\u9593\u548c\u4ea4\u4ed8\u6642\u9593\u3002\u6211\u5011\u5e0c\u671b\u8a08\u7b97\u6bcf\u500b\u8a02\u55ae\u7684\u4ea4\u4ed8\u6642\u9593\u8ddd\u96e2\u5275\u5efa\u6642\u9593\u7684\u5929\u6578\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>\nSELECT \n    OrderID, \n    DATEDIFF(DAY, CreatedAt, DeliveredAt) AS DeliveryDays\nFROM \n    Orders;\n<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u6211\u5011\u5c31\u80fd\u5feb\u901f\u7372\u5f97\u6bcf\u500b\u8a02\u55ae\u7684\u4ea4\u4ed8\u5929\u6578\uff0c\u5f9e\u800c\u9032\u884c\u9032\u4e00\u6b65\u7684\u6578\u64da\u5206\u6790\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-lNAOnIEtCS\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u9032\u884c\u6642\u9593\u683c\u5f0f\u7684\u52a0\u6e1b\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u4f7f\u7528\u6b63\u78ba\u7684\u6642\u9593\u6578\u64da\u985e\u578b\uff0c\u4ee5\u907f\u514d\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\u7684\u932f\u8aa4\u3002<\/li>\n<li>\u5728\u9032\u884c\u8a08\u7b97\u6642\uff0c\u8003\u616e\u5230\u6642\u5340\u7684\u5f71\u97ff\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u8de8\u6642\u5340\u7684\u6578\u64da\u6642\u3002<\/li>\n<li>\u5c0d\u65bc\u5927\u6578\u64da\u91cf\u7684\u8a08\u7b97\uff0c\u5efa\u8b70\u9032\u884c\u6027\u80fd\u6e2c\u8a66\uff0c\u4ee5\u78ba\u4fdd\u67e5\u8a62\u7684\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-lNAOnIEtCS\">\u7e3d\u7d50<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u901a\u904e\u4f7f\u7528<code>DATEADD<\/code>\u548c<code>DATEDIFF<\/code>\u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u5feb\u901f\u4e14\u6e96\u78ba\u5730\u63a7\u5236\u6642\u9593\u683c\u5f0f\u7684\u52a0\u6e1b\u64cd\u4f5c\u3002\u9019\u4e9b\u529f\u80fd\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u8655\u7406\u7684\u6548\u7387\uff0c\u4e5f\u70ba\u6578\u64da\u5206\u6790\u63d0\u4f9b\u4e86\u4fbf\u5229\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684<code>VPS<\/code>\u89e3\u6c7a\u65b9\u6848\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u53ef\u4ee5\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u548c\u904b\u7528\u60a8\u7684\u6578\u64da\u5eab\u8cc7\u6e90\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728MSSQL\u6578\u64da\u5eab\u4e2d\u5feb\u901f\u6e96\u78ba\u5730\u9032\u884c\u6642\u9593\u683c\u5f0f\u7684\u52a0\u6e1b\u64cd\u4f5c\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\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-71065","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/71065","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=71065"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/71065\/revisions"}],"predecessor-version":[{"id":71066,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/71065\/revisions\/71066"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=71065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=71065"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=71065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}