{"id":139007,"date":"2024-10-31T17:27:42","date_gmt":"2024-10-31T09:27:42","guid":{"rendered":"https:\/\/server.hk\/cnblog\/139007\/"},"modified":"2024-10-31T17:27:43","modified_gmt":"2024-10-31T09:27:43","slug":"sql-server%e6%97%a5%e6%9c%9f%e8%a8%88%e7%ae%97%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/139007\/","title":{"rendered":"SQL Server\u65e5\u671f\u8a08\u7b97\u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"sql-server%e6%97%a5%e6%9c%9f%e8%a8%88%e7%ae%97%e8%aa%9e%e5%8f%a5-RHsBUIimBh\">SQL Server\u65e5\u671f\u8a08\u7b97\u8a9e\u53e5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u8a08\u7b97\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5c24\u5176\u662f\u5728\u4f7f\u7528SQL Server\u6642\u3002\u7121\u8ad6\u662f\u9032\u884c\u5831\u544a\u751f\u6210\u3001\u6578\u64da\u5206\u6790\u9084\u662f\u65e5\u5e38\u7684\u6578\u64da\u64cd\u4f5c\uff0c\u638c\u63e1\u65e5\u671f\u8a08\u7b97\u8a9e\u53e5\u90fd\u80fd\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eSQL Server\u4e2d\u7684\u65e5\u671f\u8a08\u7b97\u8a9e\u53e5\uff0c\u5305\u62ec\u57fa\u672c\u7684\u65e5\u671f\u51fd\u6578\u3001\u5e38\u898b\u7684\u65e5\u671f\u8a08\u7b97\u65b9\u6cd5\u4ee5\u53ca\u5be6\u969b\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b8-RHsBUIimBh\">\u57fa\u672c\u65e5\u671f\u51fd\u6578<\/h2>\n<p>SQL Server\u63d0\u4f9b\u4e86\u591a\u7a2e\u5167\u5efa\u7684\u65e5\u671f\u51fd\u6578\uff0c\u9019\u4e9b\u51fd\u6578\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u9032\u884c\u65e5\u671f\u7684\u64cd\u4f5c\u548c\u8a08\u7b97\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65e5\u671f\u51fd\u6578\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>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=\"%e6%97%a5%e6%9c%9f%e8%a8%88%e7%ae%97%e7%a4%ba%e4%be%8b-RHsBUIimBh\">\u65e5\u671f\u8a08\u7b97\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u65e5\u671f\u8a08\u7b97\u793a\u4f8b\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u5728SQL Server\u4e2d\u4f7f\u7528\u9019\u4e9b\u51fd\u6578\u3002<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8dateadd%e5%87%bd%e6%95%b8-RHsBUIimBh\">1. \u4f7f\u7528DATEADD()\u51fd\u6578<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u60f3\u8981\u5728\u7576\u524d\u65e5\u671f\u7684\u57fa\u790e\u4e0a\u6dfb\u52a030\u5929\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT DATEADD(DAY, 30, GETDATE()) AS NewDate;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u7576\u524d\u65e5\u671f\u52a0\u4e0a30\u5929\u7684\u7d50\u679c\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8datediff%e5%87%bd%e6%95%b8-RHsBUIimBh\">2. \u4f7f\u7528DATEDIFF()\u51fd\u6578<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u8a08\u7b97\u4eca\u5929\u8207\u67d0\u500b\u7279\u5b9a\u65e5\u671f\u4e4b\u9593\u7684\u5929\u6578\u5dee\u7570\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT DATEDIFF(DAY, '2023-01-01', GETDATE()) AS DaysDifference;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u5f9e2023\u5e741\u67081\u65e5\u5230\u4eca\u5929\u7684\u5929\u6578\u5dee\u7570\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8format%e5%87%bd%e6%95%b8-RHsBUIimBh\">3. \u4f7f\u7528FORMAT()\u51fd\u6578<\/h3>\n<p>\u5982\u679c\u6211\u5011\u9700\u8981\u5c07\u65e5\u671f\u683c\u5f0f\u5316\u70ba\u7279\u5b9a\u7684\u986f\u793a\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528FORMAT()\u51fd\u6578\u3002\u4f8b\u5982\uff0c\u5c07\u7576\u524d\u65e5\u671f\u683c\u5f0f\u5316\u70ba\u201cYYYY-MM-DD\u201d\u7684\u683c\u5f0f\uff1a<\/p>\n<pre><code>SELECT FORMAT(GETDATE(), 'yyyy-MM-dd') AS FormattedDate;<\/code><\/pre>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e8%a8%88%e7%ae%97%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-RHsBUIimBh\">\u65e5\u671f\u8a08\u7b97\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u65e5\u671f\u8a08\u7b97\u5728\u8a31\u591a\u5834\u666f\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u751f\u6210\u5831\u544a\u6642\u9700\u8981\u8a08\u7b97\u92b7\u552e\u6578\u64da\u7684\u6642\u9593\u7bc4\u570d\u3002<\/li>\n<li>\u5728\u7528\u6236\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u8a08\u7b97\u7528\u6236\u8a3b\u518a\u6642\u9593\u8207\u7576\u524d\u6642\u9593\u7684\u5dee\u7570\u3002<\/li>\n<li>\u5728\u8ca1\u52d9\u7cfb\u7d71\u4e2d\uff0c\u8a08\u7b97\u767c\u7968\u7684\u5230\u671f\u65e5\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u61c9\u7528\u5834\u666f\u90fd\u9700\u8981\u9748\u6d3b\u904b\u7528SQL Server\u7684\u65e5\u671f\u8a08\u7b97\u8a9e\u53e5\uff0c\u4ee5\u4fbf\u7372\u53d6\u6e96\u78ba\u7684\u6578\u64da\u548c\u5831\u544a\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-RHsBUIimBh\">\u7e3d\u7d50<\/h2>\n<p>\u638c\u63e1SQL Server\u4e2d\u7684\u65e5\u671f\u8a08\u7b97\u8a9e\u53e5\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u6578\u64da\u5206\u6790\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u4f7f\u7528\u5167\u5efa\u7684\u65e5\u671f\u51fd\u6578\uff0c\u5982<code>GETDATE()<\/code>\u3001<code>DATEADD()<\/code>\u548c<code>DATEDIFF()<\/code>\uff0c\u7528\u6236\u53ef\u4ee5\u8f15\u9b06\u5730\u9032\u884c\u5404\u7a2e\u65e5\u671f\u8a08\u7b97\u3002\u9019\u4e9b\u6280\u80fd\u4e0d\u50c5\u80fd\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\uff0c\u9084\u80fd\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7406\u89e3\u548c\u5206\u6790\u6578\u64da\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u74b0\u5883\u4f86\u904b\u884c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a>\uff0c\u4ee5\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5b89\u5168\u548c\u9ad8\u6548\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22SQL Server\u4e2d\u7684\u65e5\u671f\u8a08\u7b97\u8a9e\u53e5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u8655\u7406\u548c\u64cd\u4f5c\u65e5\u671f\u6578\u64da\u4ee5\u6eff\u8db3\u696d\u52d9\u9700\u6c42\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-139007","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139007","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=139007"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139007\/revisions"}],"predecessor-version":[{"id":139008,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139007\/revisions\/139008"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=139007"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=139007"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=139007"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}