{"id":159991,"date":"2024-11-03T19:22:34","date_gmt":"2024-11-03T11:22:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/159991\/"},"modified":"2024-11-03T19:22:35","modified_gmt":"2024-11-03T11:22:35","slug":"mssql-%e6%95%99%e7%a8%8b-sql-now-%e5%87%bd%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/159991\/","title":{"rendered":"MSSQL \u6559\u7a0b SQL NOW() \u51fd\u6578"},"content":{"rendered":"<h1 id=\"mssql-%e6%95%99%e7%a8%8b%ef%bc%9asql-now-%e5%87%bd%e6%95%b8-SHesQwbVGS\">MSSQL \u6559\u7a0b\uff1aSQL NOW() \u51fd\u6578<\/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\u591a\u7a2e\u51fd\u6578\u4f86\u8655\u7406\u6642\u9593\u548c\u65e5\u671f\uff0c\u5176\u4e2d <code>NOW()<\/code> \u51fd\u6578\u662f\u6700\u5e38\u7528\u7684\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e <code>NOW()<\/code> \u51fd\u6578\u7684\u7528\u6cd5\u53ca\u5176\u5728 MSSQL \u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-now-%e5%87%bd%e6%95%b8%ef%bc%9f-SHesQwbVGS\">\u4ec0\u9ebc\u662f NOW() \u51fd\u6578\uff1f<\/h2>\n<p><code>NOW()<\/code> \u51fd\u6578\u7528\u65bc\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002\u9019\u500b\u51fd\u6578\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\u5728\u63d2\u5165\u6578\u64da\u6642\u81ea\u52d5\u8a18\u9304\u7576\u524d\u6642\u9593\uff0c\u6216\u5728\u67e5\u8a62\u4e2d\u7be9\u9078\u6700\u8fd1\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"now-%e5%87%bd%e6%95%b8%e7%9a%84%e8%aa%9e%e6%b3%95-SHesQwbVGS\">NOW() \u51fd\u6578\u7684\u8a9e\u6cd5<\/h2>\n<p>\u5728 MSSQL \u4e2d\uff0c<code>NOW()<\/code> \u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT NOW();<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u901a\u5e38\u70ba <code>YYYY-MM-DD HH:MM:SS<\/code>\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-now-%e5%87%bd%e6%95%b8%e7%9a%84%e7%af%84%e4%be%8b-SHesQwbVGS\">\u4f7f\u7528 NOW() \u51fd\u6578\u7684\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528 <code>NOW()<\/code> \u51fd\u6578\u7684\u7bc4\u4f8b\uff1a<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-1%ef%bc%9a%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e6%99%82%e9%96%93-SHesQwbVGS\">\u7bc4\u4f8b 1\uff1a\u7372\u53d6\u7576\u524d\u6642\u9593<\/h3>\n<pre><code>SELECT NOW() AS CurrentDateTime;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u4e26\u5c07\u5176\u547d\u540d\u70ba <code>CurrentDateTime<\/code>\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-2%ef%bc%9a%e5%9c%a8%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a%e6%99%82%e4%bd%bf%e7%94%a8-now-%e5%87%bd%e6%95%b8-SHesQwbVGS\">\u7bc4\u4f8b 2\uff1a\u5728\u63d2\u5165\u6578\u64da\u6642\u4f7f\u7528 NOW() \u51fd\u6578<\/h3>\n<p>\u7576\u6211\u5011\u9700\u8981\u5728\u63d2\u5165\u6578\u64da\u6642\u81ea\u52d5\u8a18\u9304\u7576\u524d\u6642\u9593\uff0c\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n<pre><code>INSERT INTO Orders (OrderDate, CustomerID) VALUES (NOW(), 1);<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u5728 <code>Orders<\/code> \u8868\u4e2d\u63d2\u5165\u4e00\u689d\u65b0\u8a18\u9304\uff0c\u4e26\u5c07\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u4f5c\u70ba <code>OrderDate<\/code>\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-3%ef%bc%9a%e7%af%a9%e9%81%b8%e6%9c%80%e8%bf%91%e7%9a%84%e6%95%b8%e6%93%9a-SHesQwbVGS\">\u7bc4\u4f8b 3\uff1a\u7be9\u9078\u6700\u8fd1\u7684\u6578\u64da<\/h3>\n<p>\u6211\u5011\u4e5f\u53ef\u4ee5\u4f7f\u7528 <code>NOW()<\/code> \u51fd\u6578\u4f86\u7be9\u9078\u6700\u8fd1\u7684\u6578\u64da\u3002\u4f8b\u5982\uff0c\u67e5\u8a62\u904e\u53bb\u4e00\u5468\u5167\u7684\u8a02\u55ae\uff1a<\/p>\n<pre><code>SELECT * FROM Orders WHERE OrderDate &gt; NOW() - INTERVAL 7 DAY;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u5728\u904e\u53bb\u4e03\u5929\u5167\u7684\u8a02\u55ae\u3002<\/p>\n<h2 id=\"now-%e5%87%bd%e6%95%b8%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-SHesQwbVGS\">NOW() \u51fd\u6578\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136 <code>NOW()<\/code> \u51fd\u6578\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u6642\u5340\u554f\u984c\uff1a<\/strong>\u78ba\u4fdd\u4f60\u7684 SQL Server \u8a2d\u7f6e\u4e86\u6b63\u78ba\u7684\u6642\u5340\uff0c\u5426\u5247\u8fd4\u56de\u7684\u6642\u9593\u53ef\u80fd\u4e0d\u6e96\u78ba\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u5728\u5927\u578b\u67e5\u8a62\u4e2d\u983b\u7e41\u4f7f\u7528 <code>NOW()<\/code> \u51fd\u6578\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u5efa\u8b70\u5728\u5fc5\u8981\u6642\u4f7f\u7528\u3002<\/li>\n<li><strong>\u66ff\u4ee3\u51fd\u6578\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 <code>GETDATE()<\/code> \u51fd\u6578\uff0c\u9019\u4e5f\u662f\u4e00\u500b\u8fd4\u56de\u7576\u524d\u65e5\u671f\u548c\u6642\u9593\u7684\u51fd\u6578\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SHesQwbVGS\">\u7e3d\u7d50<\/h2>\n<p>\u5728 MSSQL \u4e2d\uff0c<code>NOW()<\/code> \u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5206\u6790\u5e2b\u8f15\u9b06\u7372\u53d6\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002\u7121\u8ad6\u662f\u5728\u6578\u64da\u63d2\u5165\u3001\u67e5\u8a62\u9084\u662f\u5831\u544a\u4e2d\uff0c<code>NOW()<\/code> \u51fd\u6578\u90fd\u80fd\u63d0\u4f9b\u91cd\u8981\u7684\u6642\u9593\u4fe1\u606f\u3002\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u4f7f\u7528\u9019\u500b\u51fd\u6578\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\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\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2 MSSQL \u6559\u7a0b\u4e2d\u7684 SQL NOW() \u51fd\u6578\uff0c\u638c\u63e1\u5982\u4f55\u7372\u53d6\u7576\u524d\u65e5\u671f\u548c\u6642\u9593\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\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-159991","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159991","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=159991"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159991\/revisions"}],"predecessor-version":[{"id":159992,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159991\/revisions\/159992"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=159991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=159991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=159991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}