{"id":65265,"date":"2024-10-14T13:33:14","date_gmt":"2024-10-14T05:33:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/65265\/"},"modified":"2024-10-14T13:33:14","modified_gmt":"2024-10-14T05:33:14","slug":"mssql%e7%8d%b2%e5%be%97%e6%99%82%e9%96%93%e4%b9%8b%e8%b7%af%ef%bc%88%e7%8d%b2%e5%8f%96mssql%e7%9a%84%e6%99%82%e9%96%93%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/65265\/","title":{"rendered":"MSSQL\u7372\u5f97\u6642\u9593\u4e4b\u8def\uff08\u7372\u53d6mssql\u7684\u6642\u9593\uff09"},"content":{"rendered":"<h1 id=\"mssql%e7%8d%b2%e5%be%97%e6%99%82%e9%96%93%e4%b9%8b%e8%b7%af%ef%bc%88%e7%8d%b2%e5%8f%96mssql%e7%9a%84%e6%99%82%e9%96%93%ef%bc%89-nhbPThbKEc\">MSSQL\u7372\u5f97\u6642\u9593\u4e4b\u8def\uff08\u7372\u53d6mssql\u7684\u6642\u9593\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6642\u9593\u7684\u7372\u53d6\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5c24\u5176\u662f\u5728\u4f7f\u7528Microsoft SQL Server\uff08MSSQL\uff09\u6642\u3002MSSQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u7372\u53d6\u7576\u524d\u6642\u9593\u548c\u65e5\u671f\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u7684\u8a18\u9304\u3001\u67e5\u8a62\u548c\u5206\u6790\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728MSSQL\u4e2d\u7372\u53d6\u6642\u9593\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\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-nhbPThbKEc\">MSSQL\u4e2d\u7684\u6642\u9593\u6578\u64da\u985e\u578b<\/h2>\n<p>MSSQL\u652f\u6301\u591a\u7a2e\u6642\u9593\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>DATETIME<\/code>\uff1a\u9019\u662f\u6700\u5e38\u7528\u7684\u6642\u9593\u6578\u64da\u985e\u578b\uff0c\u7bc4\u570d\u5f9e1753\u5e74\u52309999\u5e74\uff0c\u7cbe\u5ea6\u70ba3.33\u6beb\u79d2\u3002<\/li>\n<li><code>SMALLDATETIME<\/code>\uff1a\u7bc4\u570d\u5f9e1900\u5e74\u52302079\u5e74\uff0c\u7cbe\u5ea6\u70ba1\u5206\u9418\u3002<\/li>\n<li><code>TIME<\/code>\uff1a\u50c5\u5b58\u5132\u6642\u9593\uff0c\u7bc4\u570d\u5f9e00:00:00\u523023:59:59.9999999\uff0c\u7cbe\u5ea6\u70ba100\u7d0d\u79d2\u3002<\/li>\n<li><code>DATE<\/code>\uff1a\u50c5\u5b58\u5132\u65e5\u671f\uff0c\u7bc4\u570d\u5f9e1753\u5e74\u52309999\u5e74\u3002<\/li>\n<li><code>DATETIME2<\/code>\uff1a\u64f4\u5c55\u7684DATETIME\uff0c\u7bc4\u570d\u66f4\u5ee3\uff0c\u7cbe\u5ea6\u66f4\u9ad8\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e6%99%82%e9%96%93%e7%9a%84%e6%96%b9%e6%b3%95-nhbPThbKEc\">\u7372\u53d6\u7576\u524d\u6642\u9593\u7684\u65b9\u6cd5<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u7372\u53d6\u7576\u524d\u6642\u9593\u7684\u6700\u5e38\u7528\u65b9\u6cd5\u662f\u4f7f\u7528\u5167\u5efa\u51fd\u6578\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u5e38\u898b\u7684\u51fd\u6578\uff1a<\/p>\n<h3 id=\"1-getdate-nhbPThbKEc\">1. GETDATE()<\/h3>\n<p>\u9019\u500b\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70baDATETIME\u3002<\/p>\n<pre><code>SELECT GETDATE() AS CurrentDateTime;<\/code><\/pre>\n<h3 id=\"2-sysdatetime-nhbPThbKEc\">2. SYSDATETIME()<\/h3>\n<p>\u9019\u500b\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70baDATETIME2\uff0c\u7cbe\u5ea6\u66f4\u9ad8\u3002<\/p>\n<pre><code>SELECT SYSDATETIME() AS CurrentDateTime2;<\/code><\/pre>\n<h3 id=\"3-current_timestamp-nhbPThbKEc\">3. CURRENT_TIMESTAMP<\/h3>\n<p>\u9019\u662f\u4e00\u500bANSI SQL\u6a19\u6e96\u7684\u51fd\u6578\uff0c\u8207GETDATE()\u529f\u80fd\u76f8\u540c\u3002<\/p>\n<pre><code>SELECT CURRENT_TIMESTAMP AS CurrentDateTime;<\/code><\/pre>\n<h3 id=\"4-getutcdate-nhbPThbKEc\">4. GETUTCDATE()<\/h3>\n<p>\u9019\u500b\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7684UTC\u6642\u9593\uff0c\u5c0d\u65bc\u9700\u8981\u8655\u7406\u4e0d\u540c\u884c\u653f\u5340\u57df\u7684\u61c9\u7528\u7279\u5225\u6709\u7528\u3002<\/p>\n<pre><code>SELECT GETUTCDATE() AS CurrentUTCDateTime;<\/code><\/pre>\n<h2 id=\"%e6%99%82%e9%96%93%e6%a0%bc%e5%bc%8f%e5%8c%96-nhbPThbKEc\">\u6642\u9593\u683c\u5f0f\u5316<\/h2>\n<p>\u5728\u7372\u53d6\u6642\u9593\u5f8c\uff0c\u53ef\u80fd\u9700\u8981\u5c07\u5176\u683c\u5f0f\u5316\u70ba\u7279\u5b9a\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u3002MSSQL\u63d0\u4f9b\u4e86<code>FORMAT()<\/code>\u51fd\u6578\u4f86\u5be6\u73fe\u9019\u4e00\u9ede\u3002<\/p>\n<pre><code>SELECT FORMAT(GETDATE(), 'yyyy-MM-dd HH:mm:ss') AS FormattedDateTime;<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%99%82%e9%96%93%e9%80%b2%e8%a1%8c%e6%9f%a5%e8%a9%a2-nhbPThbKEc\">\u4f7f\u7528\u6642\u9593\u9032\u884c\u67e5\u8a62<\/h2>\n<p>\u5728\u9032\u884c\u6578\u64da\u67e5\u8a62\u6642\uff0c\u6642\u9593\u901a\u5e38\u662f\u904e\u6ffe\u689d\u4ef6\u4e4b\u4e00\u3002\u4f8b\u5982\uff0c\u67e5\u8a62\u67d0\u500b\u6642\u9593\u7bc4\u570d\u5167\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>SELECT * FROM Orders WHERE OrderDate BETWEEN '2023-01-01' AND '2023-12-31';<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-nhbPThbKEc\">\u7d50\u8ad6<\/h2>\n<p>\u5728MSSQL\u4e2d\u7372\u53d6\u548c\u8655\u7406\u6642\u9593\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u901a\u904e\u4f7f\u7528\u5167\u5efa\u51fd\u6578\u548c\u683c\u5f0f\u5316\u5de5\u5177\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u7372\u53d6\u7576\u524d\u6642\u9593\u3001\u683c\u5f0f\u5316\u6642\u9593\u4ee5\u53ca\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u6642\u9593\u689d\u4ef6\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\u5f37\u6709\u529b\u7684\u652f\u6301\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bcMSSQL\u7684\u4f7f\u7528\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u6216\u8005\u9700\u8981\u7a69\u5b9a\u7684<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u4f86\u904b\u884c\u60a8\u7684\u6578\u64da\u5eab\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u6211\u5011\u63d0\u4f9b\u9ad8\u6548\u80fd\u7684<code><a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a><\/code>\uff0c\u4ee5\u6eff\u8db3\u60a8\u7684\u5404\u7a2e\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MSSQL\u7372\u53d6\u6642\u9593\u7684\u5b8c\u6574\u6307\u5357\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u7ba1\u7406\u548c\u512a\u5316\u6578\u64da\u5eab\u4e2d\u7684\u6642\u9593\u6578\u64da\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-65265","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/65265","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=65265"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/65265\/revisions"}],"predecessor-version":[{"id":65266,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/65265\/revisions\/65266"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=65265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=65265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=65265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}