{"id":139051,"date":"2024-10-31T17:50:26","date_gmt":"2024-10-31T09:50:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/139051\/"},"modified":"2024-10-31T17:50:27","modified_gmt":"2024-10-31T09:50:27","slug":"sql-server%e6%99%82%e9%96%93%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5%e5%af%a6%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/139051\/","title":{"rendered":"SQL Server\u6642\u9593\u67e5\u8a62\u8a9e\u53e5\u5be6\u4f8b"},"content":{"rendered":"<h1 id=\"sql-server%e6%99%82%e9%96%93%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5%e5%af%a6%e4%be%8b-NOFoXgVorc\">SQL Server\u6642\u9593\u67e5\u8a62\u8a9e\u53e5\u5be6\u4f8b<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6642\u9593\u67e5\u8a62\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u90e8\u5206\u3002SQL Server\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u8655\u7406\u548c\u67e5\u8a62\u6642\u9593\u6578\u64da\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u4e00\u4e9b\u5e38\u898b\u7684SQL Server\u6642\u9593\u67e5\u8a62\u8a9e\u53e5\u5be6\u4f8b\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u5728SQL Server\u4e2d\u9032\u884c\u6642\u9593\u76f8\u95dc\u7684\u67e5\u8a62\u3002<\/p>\n<h2 id=\"1-%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e6%99%82%e9%96%93-NOFoXgVorc\">1. \u7372\u53d6\u7576\u524d\u6642\u9593<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\u4f86\u7372\u53d6\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff1a<\/p>\n<pre><code>SELECT GETDATE();<\/code><\/pre>\n<p>\u9019\u500b\u8a9e\u53e5\u5c07\u8fd4\u56de\u7576\u524d\u7684\u7cfb\u7d71\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70baYYYY-MM-DD HH:MM:SS.mmm\u3002<\/p>\n<h2 id=\"2-%e6%9f%a5%e8%a9%a2%e7%89%b9%e5%ae%9a%e6%97%a5%e6%9c%9f%e7%9a%84%e6%95%b8%e6%93%9a-NOFoXgVorc\">2. \u67e5\u8a62\u7279\u5b9a\u65e5\u671f\u7684\u6578\u64da<\/h2>\n<p>\u5982\u679c\u9700\u8981\u67e5\u8a62\u7279\u5b9a\u65e5\u671f\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT * FROM Orders WHERE OrderDate = '2023-10-01';<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u57282023\u5e7410\u67081\u65e5\u4e0b\u7684\u8a02\u55ae\u3002<\/p>\n<h2 id=\"3-%e6%9f%a5%e8%a9%a2%e6%9f%90%e5%80%8b%e6%99%82%e9%96%93%e7%af%84%e5%9c%8d%e5%85%a7%e7%9a%84%e6%95%b8%e6%93%9a-NOFoXgVorc\">3. \u67e5\u8a62\u67d0\u500b\u6642\u9593\u7bc4\u570d\u5167\u7684\u6578\u64da<\/h2>\n<p>\u8981\u67e5\u8a62\u67d0\u500b\u6642\u9593\u7bc4\u570d\u5167\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528BETWEEN\u95dc\u9375\u5b57\uff1a<\/p>\n<pre><code>SELECT * FROM Orders \nWHERE OrderDate BETWEEN '2023-10-01' AND '2023-10-31';<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de2023\u5e7410\u67081\u65e5\u81f32023\u5e7410\u670831\u65e5\u4e4b\u9593\u7684\u6240\u6709\u8a02\u55ae\u3002<\/p>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8datepart%e5%87%bd%e6%95%b8%e6%8f%90%e5%8f%96%e6%99%82%e9%96%93%e9%83%a8%e5%88%86-NOFoXgVorc\">4. \u4f7f\u7528DATEPART\u51fd\u6578\u63d0\u53d6\u6642\u9593\u90e8\u5206<\/h2>\n<p>SQL Server\u7684DATEPART\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u63d0\u53d6\u65e5\u671f\u7684\u7279\u5b9a\u90e8\u5206\uff0c\u4f8b\u5982\u5e74\u3001\u6708\u3001\u65e5\u7b49\uff1a<\/p>\n<pre><code>SELECT DATEPART(YEAR, OrderDate) AS OrderYear, \n       DATEPART(MONTH, OrderDate) AS OrderMonth \nFROM Orders;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u500b\u8a02\u55ae\u7684\u5e74\u4efd\u548c\u6708\u4efd\u3002<\/p>\n<h2 id=\"5-%e8%a8%88%e7%ae%97%e6%99%82%e9%96%93%e5%b7%ae-NOFoXgVorc\">5. \u8a08\u7b97\u6642\u9593\u5dee<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u8a08\u7b97\u5169\u500b\u65e5\u671f\u4e4b\u9593\u7684\u6642\u9593\u5dee\u3002\u53ef\u4ee5\u4f7f\u7528DATEDIFF\u51fd\u6578\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SELECT DATEDIFF(DAY, '2023-10-01', '2023-10-31') AS DaysDifference;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de2023\u5e7410\u67081\u65e5\u548c2023\u5e7410\u670831\u65e5\u4e4b\u9593\u7684\u5929\u6578\u5dee\u3002<\/p>\n<h2 id=\"6-%e4%bd%bf%e7%94%a8format%e5%87%bd%e6%95%b8%e6%a0%bc%e5%bc%8f%e5%8c%96%e6%97%a5%e6%9c%9f-NOFoXgVorc\">6. \u4f7f\u7528FORMAT\u51fd\u6578\u683c\u5f0f\u5316\u65e5\u671f<\/h2>\n<p>SQL Server\u7684FORMAT\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u683c\u5f0f\u5316\u65e5\u671f\u548c\u6642\u9593\uff1a<\/p>\n<pre><code>SELECT FORMAT(OrderDate, 'yyyy-MM-dd') AS FormattedDate \nFROM Orders;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u683c\u5f0f\u5316\u70baYYYY-MM-DD\u7684\u8a02\u55ae\u65e5\u671f\u3002<\/p>\n<h2 id=\"7-%e6%9f%a5%e8%a9%a2%e7%95%b6%e6%9c%88%e7%9a%84%e6%95%b8%e6%93%9a-NOFoXgVorc\">7. \u67e5\u8a62\u7576\u6708\u7684\u6578\u64da<\/h2>\n<p>\u5982\u679c\u9700\u8981\u67e5\u8a62\u7576\u524d\u6708\u4efd\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT * FROM Orders \nWHERE MONTH(OrderDate) = MONTH(GETDATE()) \nAND YEAR(OrderDate) = YEAR(GETDATE());<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u6708\u4efd\u7684\u6240\u6709\u8a02\u55ae\u3002<\/p>\n<h2 id=\"8-%e4%bd%bf%e7%94%a8%e6%99%82%e9%96%93%e6%88%b3%e9%80%b2%e8%a1%8c%e6%9f%a5%e8%a9%a2-NOFoXgVorc\">8. \u4f7f\u7528\u6642\u9593\u6233\u9032\u884c\u67e5\u8a62<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u6642\u9593\u6233\u4f86\u67e5\u8a62\u6578\u64da\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT * FROM Orders \nWHERE OrderTimestamp &gt;= '2023-10-01 00:00:00' \nAND OrderTimestamp &lt; &#039;2023-11-01 00:00:00&#039;;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de2023\u5e7410\u6708\u6574\u500b\u6708\u4efd\u7684\u6240\u6709\u8a02\u55ae\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NOFoXgVorc\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u591a\u500bSQL Server\u6642\u9593\u67e5\u8a62\u8a9e\u53e5\u7684\u5be6\u4f8b\uff0c\u6db5\u84cb\u4e86\u5f9e\u7372\u53d6\u7576\u524d\u6642\u9593\u5230\u67e5\u8a62\u7279\u5b9a\u65e5\u671f\u7bc4\u570d\u5167\u6578\u64da\u7684\u5404\u7a2e\u60c5\u6cc1\u3002\u638c\u63e1\u9019\u4e9b\u67e5\u8a62\u8a9e\u53e5\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22SQL Server\u6642\u9593\u67e5\u8a62\u8a9e\u53e5\u7684\u5be6\u4f8b\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u8655\u7406\u548c\u5206\u6790\u6642\u9593\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u5eab\u67e5\u8a62\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-139051","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139051","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=139051"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139051\/revisions"}],"predecessor-version":[{"id":139052,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139051\/revisions\/139052"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=139051"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=139051"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=139051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}