{"id":196424,"date":"2024-11-13T23:28:27","date_gmt":"2024-11-13T15:28:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196424\/"},"modified":"2024-11-13T23:28:28","modified_gmt":"2024-11-13T15:28:28","slug":"%e5%80%bc%e5%88%a9%e7%94%a8sql-server%e5%af%a6%e7%8f%be%e6%97%a5%e6%9c%9f%e6%93%8d%e4%bd%9c%ef%bc%88sqlserver%e6%97%a5%e6%9c%9f%e5%8f%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196424\/","title":{"rendered":"\u503c\u5229\u7528SQL Server\u5be6\u73fe\u65e5\u671f\u64cd\u4f5c\uff08sqlserver\u65e5\u671f\u53d6\uff09"},"content":{"rendered":"<h1 id=\"%e5%80%bc%e5%88%a9%e7%94%a8sql-server%e5%af%a6%e7%8f%be%e6%97%a5%e6%9c%9f%e6%93%8d%e4%bd%9c%ef%bc%88sqlserver%e6%97%a5%e6%9c%9f%e5%8f%96%ef%bc%89-KAbrhRzXty\">\u503c\u5229\u7528SQL Server\u5be6\u73fe\u65e5\u671f\u64cd\u4f5c\uff08sqlserver\u65e5\u671f\u53d6\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u64cd\u4f5c\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002SQL Server\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u8655\u7406\u65e5\u671f\u548c\u6642\u9593\uff0c\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u9032\u884c\u6578\u64da\u67e5\u8a62\uff0c\u9084\u80fd\u5920\u9032\u884c\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u751f\u6210\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728SQL Server\u4e2d\u9032\u884c\u65e5\u671f\u64cd\u4f5c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"sql-server%e4%b8%ad%e7%9a%84%e6%97%a5%e6%9c%9f%e9%a1%9e%e5%9e%8b-KAbrhRzXty\">SQL Server\u4e2d\u7684\u65e5\u671f\u985e\u578b<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u6578\u64da\u985e\u578b\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>DATE<\/code>\uff1a\u53ea\u5b58\u5132\u65e5\u671f\uff0c\u7bc4\u570d\u5f9e &#8216;0001-01-01&#8217; \u5230 &#8216;9999-12-31&#8217;\u3002<\/li>\n<li><code>TIME<\/code>\uff1a\u53ea\u5b58\u5132\u6642\u9593\uff0c\u7bc4\u570d\u5f9e &#8217;00:00:00.0000000&#8242; \u5230 &#8217;23:59:59.9999999&#8217;\u3002<\/li>\n<li><code>DATETIME<\/code>\uff1a\u540c\u6642\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u7bc4\u570d\u5f9e &#8216;1753-01-01&#8217; \u5230 &#8216;9999-12-31&#8217;\u3002<\/li>\n<li><code>DATETIME2<\/code>\uff1a\u64f4\u5c55\u7684\u65e5\u671f\u6642\u9593\u985e\u578b\uff0c\u7bc4\u570d\u66f4\u5ee3\uff0c\u7cbe\u5ea6\u66f4\u9ad8\u3002<\/li>\n<li><code>SMALLDATETIME<\/code>\uff1a\u5b58\u5132\u7684\u65e5\u671f\u7bc4\u570d\u8f03\u5c0f\uff0c\u7cbe\u5ea6\u70ba\u5206\u9418\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e6%93%8d%e4%bd%9c%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%87%bd%e6%95%b8-KAbrhRzXty\">\u65e5\u671f\u64cd\u4f5c\u7684\u57fa\u672c\u51fd\u6578<\/h2>\n<p>SQL Server\u63d0\u4f9b\u4e86\u591a\u7a2e\u5167\u5efa\u51fd\u6578\u4f86\u9032\u884c\u65e5\u671f\u64cd\u4f5c\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u51fd\u6578\uff1a<\/p>\n<h3 id=\"1-getdate-KAbrhRzXty\">1. GETDATE()<\/h3>\n<p>\u6b64\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002<\/p>\n<pre><code>SELECT GETDATE();<\/code><\/pre>\n<h3 id=\"2-dateadd-KAbrhRzXty\">2. DATEADD()<\/h3>\n<p>\u6b64\u51fd\u6578\u7528\u65bc\u5728\u6307\u5b9a\u7684\u65e5\u671f\u4e0a\u6dfb\u52a0\u4e00\u6bb5\u6642\u9593\u3002<\/p>\n<pre><code>SELECT DATEADD(DAY, 10, GETDATE()); -- \u5728\u7576\u524d\u65e5\u671f\u4e0a\u52a010\u5929<\/code><\/pre>\n<h3 id=\"3-datediff-KAbrhRzXty\">3. DATEDIFF()<\/h3>\n<p>\u6b64\u51fd\u6578\u7528\u65bc\u8a08\u7b97\u5169\u500b\u65e5\u671f\u4e4b\u9593\u7684\u5dee\u7570\u3002<\/p>\n<pre><code>SELECT DATEDIFF(DAY, '2023-01-01', GETDATE()); -- \u8a08\u7b97\u5f9e2023\u5e741\u67081\u65e5\u5230\u4eca\u5929\u7684\u5929\u6578<\/code><\/pre>\n<h3 id=\"4-format-KAbrhRzXty\">4. FORMAT()<\/h3>\n<p>\u6b64\u51fd\u6578\u7528\u65bc\u683c\u5f0f\u5316\u65e5\u671f\u548c\u6642\u9593\u7684\u986f\u793a\u65b9\u5f0f\u3002<\/p>\n<pre><code>SELECT FORMAT(GETDATE(), 'yyyy-MM-dd HH:mm:ss'); -- \u683c\u5f0f\u5316\u7576\u524d\u65e5\u671f\u6642\u9593<\/code><\/pre>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%af%a6%e7%94%a8%e7%af%84%e4%be%8b-KAbrhRzXty\">\u65e5\u671f\u67e5\u8a62\u7684\u5be6\u7528\u7bc4\u4f8b<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u65e5\u671f\u67e5\u8a62\u5e38\u5e38\u7528\u65bc\u7be9\u9078\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u67e5\u8a62\u7bc4\u4f8b\uff1a<\/p>\n<h3 id=\"1-%e6%9f%a5%e8%a9%a2%e7%89%b9%e5%ae%9a%e6%97%a5%e6%9c%9f%e7%af%84%e5%9c%8d%e5%85%a7%e7%9a%84%e6%95%b8%e6%93%9a-KAbrhRzXty\">1. \u67e5\u8a62\u7279\u5b9a\u65e5\u671f\u7bc4\u570d\u5167\u7684\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM Orders WHERE OrderDate BETWEEN '2023-01-01' AND '2023-12-31';<\/code><\/pre>\n<h3 id=\"2-%e6%9f%a5%e8%a9%a2%e7%95%b6%e6%9c%88%e7%9a%84%e6%95%b8%e6%93%9a-KAbrhRzXty\">2. \u67e5\u8a62\u7576\u6708\u7684\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM Orders WHERE MONTH(OrderDate) = MONTH(GETDATE()) AND YEAR(OrderDate) = YEAR(GETDATE());<\/code><\/pre>\n<h3 id=\"3-%e6%9f%a5%e8%a9%a2%e6%9c%80%e8%bf%91%e4%b8%83%e5%a4%a9%e7%9a%84%e6%95%b8%e6%93%9a-KAbrhRzXty\">3. \u67e5\u8a62\u6700\u8fd1\u4e03\u5929\u7684\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM Orders WHERE OrderDate &gt;= DATEADD(DAY, -7, GETDATE());<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-KAbrhRzXty\">\u7d50\u8ad6<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u65e5\u671f\u64cd\u4f5c\u662f\u6578\u64da\u67e5\u8a62\u548c\u5206\u6790\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u901a\u904e\u4f7f\u7528\u5167\u5efa\u7684\u65e5\u671f\u51fd\u6578\uff0c\u7528\u6236\u53ef\u4ee5\u8f15\u9b06\u5730\u9032\u884c\u5404\u7a2e\u65e5\u671f\u8a08\u7b97\u548c\u67e5\u8a62\u3002\u7121\u8ad6\u662f\u9032\u884c\u7c21\u55ae\u7684\u65e5\u671f\u52a0\u6e1b\uff0c\u9084\u662f\u8907\u96dc\u7684\u65e5\u671f\u7be9\u9078\uff0cSQL Server\u90fd\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u652f\u6301\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u4e14\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\u4e0d\u540c\u7528\u6236\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\u6700\u4f73\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728SQL Server\u4e2d\u6709\u6548\u5730\u9032\u884c\u65e5\u671f\u64cd\u4f5c\uff0c\u5b78\u7fd2\u65e5\u671f\u53d6\u503c\u6280\u5de7\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-196424","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196424","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=196424"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196424\/revisions"}],"predecessor-version":[{"id":196425,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196424\/revisions\/196425"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196424"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196424"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}