{"id":66327,"date":"2024-10-14T16:31:17","date_gmt":"2024-10-14T08:31:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66327\/"},"modified":"2024-10-14T16:31:17","modified_gmt":"2024-10-14T08:31:17","slug":"mssql%e4%b8%ad%e7%9a%84%e6%99%82%e9%96%93%e5%87%bd%e6%95%b8%ef%bc%9a%e9%96%8b%e7%99%bc%e6%8a%80%e5%b7%a7%e4%bb%8b%e7%b4%b9%ef%bc%88mssql%e6%99%82%e9%96%93%e5%87%bd%e6%95%b8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66327\/","title":{"rendered":"MSSQL\u4e2d\u7684\u6642\u9593\u51fd\u6578\uff1a\u958b\u767c\u6280\u5de7\u4ecb\u7d39\uff08mssql\u6642\u9593\u51fd\u6578\uff09"},"content":{"rendered":"<h1 id=\"mssql%e4%b8%ad%e7%9a%84%e6%99%82%e9%96%93%e5%87%bd%e6%95%b8%ef%bc%9a%e9%96%8b%e7%99%bc%e6%8a%80%e5%b7%a7%e4%bb%8b%e7%b4%b9-jCDoWqnGQB\">MSSQL\u4e2d\u7684\u6642\u9593\u51fd\u6578\uff1a\u958b\u767c\u6280\u5de7\u4ecb\u7d39<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6642\u9593\u548c\u65e5\u671f\u7684\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5c24\u5176\u662f\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u6642\u3002Microsoft SQL Server\uff08MSSQL\uff09\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684\u6642\u9593\u51fd\u6578\uff0c\u9019\u4e9b\u51fd\u6578\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u6709\u6548\u5730\u8655\u7406\u6642\u9593\u548c\u65e5\u671f\u6578\u64da\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u4e00\u4e9b\u5e38\u7528\u7684MSSQL\u6642\u9593\u51fd\u6578\u53ca\u5176\u958b\u767c\u6280\u5de7\u3002<\/p>\n<h2 id=\"1-%e5%b8%b8%e7%94%a8%e7%9a%84%e6%99%82%e9%96%93%e5%87%bd%e6%95%b8-jCDoWqnGQB\">1. \u5e38\u7528\u7684\u6642\u9593\u51fd\u6578<\/h2>\n<p>MSSQL\u4e2d\u6709\u591a\u7a2e\u6642\u9593\u51fd\u6578\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u5e38\u7528\u7684\uff1a<\/p>\n<ul>\n<li><code>GETDATE()<\/code>\uff1a\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002<\/li>\n<li><code>SYSDATETIME()<\/code>\uff1a\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u7cbe\u5ea6\u66f4\u9ad8\u3002<\/li>\n<li><code>CURRENT_TIMESTAMP<\/code>\uff1a\u8207<code>GETDATE()<\/code>\u76f8\u540c\uff0c\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002<\/li>\n<li><code>DATEADD()<\/code>\uff1a\u7528\u65bc\u5728\u6307\u5b9a\u7684\u65e5\u671f\u4e0a\u6dfb\u52a0\u4e00\u6bb5\u6642\u9593\u3002<\/li>\n<li><code>DATEDIFF()<\/code>\uff1a\u8a08\u7b97\u5169\u500b\u65e5\u671f\u4e4b\u9593\u7684\u5dee\u7570\u3002<\/li>\n<li><code>FORMAT()<\/code>\uff1a\u683c\u5f0f\u5316\u65e5\u671f\u548c\u6642\u9593\u7684\u986f\u793a\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-jCDoWqnGQB\">2. \u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6642\u9593\u51fd\u6578\u4f7f\u7528\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"2-1-%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e6%99%82%e9%96%93-jCDoWqnGQB\">2.1 \u7372\u53d6\u7576\u524d\u6642\u9593<\/h3>\n<pre><code>\nSELECT GETDATE() AS CurrentDateTime;\n<\/code><\/pre>\n<h3 id=\"2-2-%e6%b7%bb%e5%8a%a0%e6%99%82%e9%96%93-jCDoWqnGQB\">2.2 \u6dfb\u52a0\u6642\u9593<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u60f3\u8981\u5728\u7576\u524d\u6642\u9593\u4e0a\u6dfb\u52a05\u5929\uff0c\u53ef\u4ee5\u4f7f\u7528<code>DATEADD()<\/code>\u51fd\u6578\uff1a<\/p>\n<pre><code>\nSELECT DATEADD(DAY, 5, GETDATE()) AS NewDateTime;\n<\/code><\/pre>\n<h3 id=\"2-3-%e8%a8%88%e7%ae%97%e6%97%a5%e6%9c%9f%e5%b7%ae%e7%95%b0-jCDoWqnGQB\">2.3 \u8a08\u7b97\u65e5\u671f\u5dee\u7570<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u8a08\u7b97\u5169\u500b\u65e5\u671f\u4e4b\u9593\u7684\u5929\u6578\u5dee\u7570\uff0c\u53ef\u4ee5\u4f7f\u7528<code>DATEDIFF()<\/code>\u51fd\u6578\uff1a<\/p>\n<pre><code>\nSELECT DATEDIFF(DAY, '2023-01-01', GETDATE()) AS DaysDifference;\n<\/code><\/pre>\n<h3 id=\"2-4-%e6%a0%bc%e5%bc%8f%e5%8c%96%e6%97%a5%e6%9c%9f-jCDoWqnGQB\">2.4 \u683c\u5f0f\u5316\u65e5\u671f<\/h3>\n<p>\u4f7f\u7528<code>FORMAT()<\/code>\u51fd\u6578\u53ef\u4ee5\u81ea\u5b9a\u7fa9\u65e5\u671f\u7684\u986f\u793a\u683c\u5f0f\uff1a<\/p>\n<pre><code>\nSELECT FORMAT(GETDATE(), 'yyyy-MM-dd HH:mm:ss') AS FormattedDateTime;\n<\/code><\/pre>\n<h2 id=\"3-%e9%96%8b%e7%99%bc%e6%8a%80%e5%b7%a7-jCDoWqnGQB\">3. \u958b\u767c\u6280\u5de7<\/h2>\n<p>\u5728\u4f7f\u7528MSSQL\u7684\u6642\u9593\u51fd\u6578\u6642\uff0c\u6709\u5e7e\u500b\u958b\u767c\u6280\u5de7\u53ef\u4ee5\u5e6b\u52a9\u63d0\u9ad8\u6548\u7387\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u9069\u7576\u7684\u6578\u64da\u985e\u578b\uff1a<\/strong>\u5728\u8a2d\u8a08\u8cc7\u6599\u8868\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u65e5\u671f\u548c\u6642\u9593\u6578\u64da\u985e\u578b\uff08\u5982<code>DATETIME<\/code>\u6216<code>DATETIME2<\/code>\uff09\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8a08\u7b97\uff1a<\/strong>\u5728\u67e5\u8a62\u4e2d\uff0c\u76e1\u91cf\u907f\u514d\u5728WHERE\u5b50\u53e5\u4e2d\u9032\u884c\u6642\u9593\u8a08\u7b97\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u5c0d\u65bc\u7d93\u5e38\u67e5\u8a62\u7684\u65e5\u671f\u5b57\u6bb5\uff0c\u8003\u616e\u5efa\u7acb\u7d22\u5f15\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li><strong>\u6ce8\u610f\u6642\u5340\u554f\u984c\uff1a<\/strong>\u5728\u8655\u7406\u8de8\u6642\u5340\u7684\u61c9\u7528\u6642\uff0c\u78ba\u4fdd\u6b63\u78ba\u8655\u7406\u6642\u5340\u8f49\u63db\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e7%b8%bd%e7%b5%90-jCDoWqnGQB\">4. \u7e3d\u7d50<\/h2>\n<p>MSSQL\u4e2d\u7684\u6642\u9593\u51fd\u6578\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u5de5\u5177\u4f86\u8655\u7406\u65e5\u671f\u548c\u6642\u9593\u6578\u64da\u3002\u901a\u904e\u719f\u6089\u9019\u4e9b\u51fd\u6578\u53ca\u5176\u4f7f\u7528\u6280\u5de7\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u9032\u884c\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u3002\u7121\u8ad6\u662f\u5728\u65e5\u5e38\u958b\u767c\u9084\u662f\u5927\u578b\u9805\u76ee\u4e2d\uff0c\u638c\u63e1\u9019\u4e9b\u6642\u9593\u51fd\u6578\u90fd\u5c07\u5927\u5927\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\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\u61c9\u7528\u90e8\u7f72\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MSSQL\u4e2d\u7684\u6642\u9593\u51fd\u6578\uff0c\u638c\u63e1\u958b\u767c\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u512a\u5316\u67e5\u8a62\u6027\u80fd\uff0c\u8b93\u4f60\u7684\u6578\u64da\u7ba1\u7406\u66f4\u9ad8\u6548\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-66327","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66327","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=66327"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66327\/revisions"}],"predecessor-version":[{"id":66328,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66327\/revisions\/66328"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}