{"id":64923,"date":"2024-10-14T12:44:14","date_gmt":"2024-10-14T04:44:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/64923\/"},"modified":"2024-10-14T12:44:14","modified_gmt":"2024-10-14T04:44:14","slug":"mssql%e6%9f%a5%e8%a9%a2%ef%bc%9a%e4%bd%bf%e7%94%a8%e6%97%a5%e6%9c%9f%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90%ef%bc%88mssql%e6%9f%a5%e8%a9%a2%e6%97%a5%e6%9c%9f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/64923\/","title":{"rendered":"MSSQL\u67e5\u8a62\uff1a\u4f7f\u7528\u65e5\u671f\u9032\u884c\u6578\u64da\u5206\u6790\uff08mssql++\u67e5\u8a62+\u65e5\u671f\uff09"},"content":{"rendered":"<h1 id=\"mssql%e6%9f%a5%e8%a9%a2%ef%bc%9a%e4%bd%bf%e7%94%a8%e6%97%a5%e6%9c%9f%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90-owQmmMbjGg\">MSSQL\u67e5\u8a62\uff1a\u4f7f\u7528\u65e5\u671f\u9032\u884c\u6578\u64da\u5206\u6790<\/h1>\n<p>\u5728\u6578\u64da\u5206\u6790\u4e2d\uff0c\u65e5\u671f\u662f\u975e\u5e38\u91cd\u8981\u7684\u5143\u7d20\u3002\u7121\u8ad6\u662f\u5546\u696d\u5831\u544a\u3001\u7528\u6236\u884c\u70ba\u5206\u6790\u9084\u662f\u8ca1\u52d9\u6578\u64da\u7684\u6574\u7406\uff0c\u65e5\u671f\u90fd\u80fd\u5e6b\u52a9\u6211\u5011\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u7684\u8da8\u52e2\u548c\u6a21\u5f0f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MSSQL\u4e2d\u4f7f\u7528\u65e5\u671f\u9032\u884c\u6578\u64da\u5206\u6790\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u67e5\u8a62\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-owQmmMbjGg\">\u65e5\u671f\u6578\u64da\u985e\u578b<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u6578\u64da\u985e\u578b\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><code>DATE<\/code>\uff1a\u53ea\u5b58\u5132\u65e5\u671f\uff0c\u7bc4\u570d\u5f9e 0001-01-01 \u5230 9999-12-31\u3002<\/li>\n<li><code>TIME<\/code>\uff1a\u53ea\u5b58\u5132\u6642\u9593\uff0c\u7bc4\u570d\u5f9e 00:00:00.0000000 \u5230 23:59:59.9999999\u3002<\/li>\n<li><code>DATETIME<\/code>\uff1a\u540c\u6642\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u7bc4\u570d\u5f9e 1753-01-01 \u5230 9999-12-31\u3002<\/li>\n<li><code>DATETIME2<\/code>\uff1a\u6bd4<code>DATETIME<\/code>\u66f4\u7cbe\u78ba\uff0c\u7bc4\u570d\u5f9e 0001-01-01 \u5230 9999-12-31\u3002<\/li>\n<li><code>SMALLDATETIME<\/code>\uff1a\u5b58\u5132\u7684\u65e5\u671f\u7bc4\u570d\u8f03\u5c0f\uff0c\u5f9e 1900-01-01 \u5230 2079-06-06\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%97%a5%e6%9c%9f%e9%80%b2%e8%a1%8c%e6%9f%a5%e8%a9%a2-owQmmMbjGg\">\u4f7f\u7528\u65e5\u671f\u9032\u884c\u67e5\u8a62<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u4f7f\u7528\u65e5\u671f\u9032\u884c\u67e5\u8a62\u6642\uff0c\u53ef\u4ee5\u5229\u7528\u591a\u7a2e\u51fd\u6578\u548c\u64cd\u4f5c\u7b26\u4f86\u7be9\u9078\u548c\u5206\u6790\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u67e5\u8a62\u793a\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%9a%84%e6%95%b8%e6%93%9a-owQmmMbjGg\">1. \u67e5\u8a62\u7279\u5b9a\u65e5\u671f\u7684\u6578\u64da<\/h3>\n<pre><code>\nSELECT * \nFROM Orders \nWHERE OrderDate = '2023-10-01';\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u67e5\u8a62\u5c07\u8fd4\u56de\u57282023\u5e7410\u67081\u65e5\u4e0b\u7684\u6240\u6709\u8a02\u55ae\u3002<\/p>\n<h3 id=\"2-%e6%9f%a5%e8%a9%a2%e6%9f%90%e5%80%8b%e6%97%a5%e6%9c%9f%e7%af%84%e5%9c%8d%e5%85%a7%e7%9a%84%e6%95%b8%e6%93%9a-owQmmMbjGg\">2. \u67e5\u8a62\u67d0\u500b\u65e5\u671f\u7bc4\u570d\u5167\u7684\u6578\u64da<\/h3>\n<pre><code>\nSELECT * \nFROM Orders \nWHERE OrderDate BETWEEN '2023-10-01' AND '2023-10-31';\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de2023\u5e7410\u67081\u65e5\u81f310\u670831\u65e5\u4e4b\u9593\u7684\u6240\u6709\u8a02\u55ae\u3002<\/p>\n<h3 id=\"3-%e6%8c%89%e6%9c%88%e4%bb%bd%e5%88%86%e7%b5%84%e6%95%b8%e6%93%9a-owQmmMbjGg\">3. \u6309\u6708\u4efd\u5206\u7d44\u6578\u64da<\/h3>\n<pre><code>\nSELECT YEAR(OrderDate) AS OrderYear, MONTH(OrderDate) AS OrderMonth, COUNT(*) AS TotalOrders \nFROM Orders \nGROUP BY YEAR(OrderDate), MONTH(OrderDate);\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u500b\u6708\u4efd\u7684\u8a02\u55ae\u6578\u91cf\uff0c\u5e6b\u52a9\u5206\u6790\u6bcf\u500b\u6708\u7684\u696d\u52d9\u8868\u73fe\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b8%e9%80%b2%e8%a1%8c%e5%88%86%e6%9e%90-owQmmMbjGg\">4. \u4f7f\u7528\u65e5\u671f\u51fd\u6578\u9032\u884c\u5206\u6790<\/h3>\n<p>MSSQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u65e5\u671f\u51fd\u6578\uff0c\u4f8b\u5982<code>GETDATE()<\/code>\u3001<code>DATEADD()<\/code>\u548c<code>DATEDIFF()<\/code>\u7b49\uff0c\u9019\u4e9b\u51fd\u6578\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u9032\u884c\u66f4\u8907\u96dc\u7684\u65e5\u671f\u8a08\u7b97\u3002<\/p>\n<pre><code>\nSELECT COUNT(*) AS TotalOrdersLast30Days \nFROM Orders \nWHERE OrderDate &gt;= DATEADD(DAY, -30, GETDATE());\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u904e\u53bb30\u5929\u5167\u7684\u8a02\u55ae\u7e3d\u6578\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-owQmmMbjGg\">\u7d50\u8ad6<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u4f7f\u7528\u65e5\u671f\u9032\u884c\u6578\u64da\u5206\u6790\u662f\u975e\u5e38\u9748\u6d3b\u4e14\u5f37\u5927\u7684\u3002\u901a\u904e\u6b63\u78ba\u7684\u67e5\u8a62\u548c\u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u6df1\u5165\u4e86\u89e3\u6578\u64da\u80cc\u5f8c\u7684\u8da8\u52e2\u548c\u6a21\u5f0f\u3002\u7121\u8ad6\u662f\u5546\u696d\u6c7a\u7b56\u9084\u662f\u5e02\u5834\u5206\u6790\uff0c\u65e5\u671f\u7684\u4f7f\u7528\u90fd\u80fd\u63d0\u4f9b\u91cd\u8981\u7684\u6d1e\u5bdf\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u548c\u5206\u6790\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u6578\u64da\u8655\u7406\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728MSSQL\u4e2d\u4f7f\u7528\u65e5\u671f\u9032\u884c\u6578\u64da\u5206\u6790\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u638c\u63e1mssql++\u67e5\u8a62\u6280\u5de7\uff0c\u512a\u5316\u6578\u64da\u8655\u7406\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-64923","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64923","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=64923"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64923\/revisions"}],"predecessor-version":[{"id":64924,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64923\/revisions\/64924"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=64923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=64923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=64923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}