{"id":164139,"date":"2024-11-05T05:21:23","date_gmt":"2024-11-04T21:21:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/164139\/"},"modified":"2024-11-05T05:21:23","modified_gmt":"2024-11-04T21:21:23","slug":"%e5%80%9f%e5%8a%a9mssql%e5%af%a6%e7%8f%be%e5%8f%96%e6%9c%80%e5%a4%a7%e6%97%a5%e6%9c%9f%e7%9a%84%e7%b0%a1%e6%98%93%e6%93%8d%e4%bd%9c%ef%bc%88%e5%8f%96%e6%9c%80%e5%a4%a7%e6%97%a5%e6%9c%9fmssql%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/164139\/","title":{"rendered":"\u501f\u52a9MSSQL\u5be6\u73fe\u53d6\u6700\u5927\u65e5\u671f\u7684\u7c21\u6613\u64cd\u4f5c\uff08\u53d6\u6700\u5927\u65e5\u671fmssql\uff09"},"content":{"rendered":"<h1 id=\"%e5%80%9f%e5%8a%a9mssql%e5%af%a6%e7%8f%be%e5%8f%96%e6%9c%80%e5%a4%a7%e6%97%a5%e6%9c%9f%e7%9a%84%e7%b0%a1%e6%98%93%e6%93%8d%e4%bd%9c-NGwpbiEnRA\">\u501f\u52a9MSSQL\u5be6\u73fe\u53d6\u6700\u5927\u65e5\u671f\u7684\u7c21\u6613\u64cd\u4f5c<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u64cd\u4f5c\u662f\u975e\u5e38\u5e38\u898b\u7684\u9700\u6c42\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528Microsoft SQL Server\uff08MSSQL\uff09\u6642\uff0c\u5982\u4f55\u6709\u6548\u5730\u67e5\u8a62\u6700\u5927\u65e5\u671f\u6210\u70ba\u4e86\u8a31\u591a\u958b\u767c\u8005\u548c\u6578\u64da\u5206\u6790\u5e2b\u9700\u8981\u638c\u63e1\u7684\u6280\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728MSSQL\u4e2d\u5be6\u73fe\u53d6\u6700\u5927\u65e5\u671f\u7684\u7c21\u6613\u64cd\u4f5c\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%8f%96%e6%9c%80%e5%a4%a7%e6%97%a5%e6%9c%9f%ef%bc%9f-NGwpbiEnRA\">\u70ba\u4ec0\u9ebc\u9700\u8981\u53d6\u6700\u5927\u65e5\u671f\uff1f<\/h2>\n<p>\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\uff0c\u53d6\u6700\u5927\u65e5\u671f\u7684\u9700\u6c42\u4e3b\u8981\u51fa\u73fe\u5728\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<ul>\n<li>\u67e5\u8a62\u6700\u65b0\u7684\u8a02\u55ae\u6216\u4ea4\u6613\u8a18\u9304\u3002<\/li>\n<li>\u7372\u53d6\u6700\u8fd1\u7684\u7528\u6236\u767b\u9304\u6642\u9593\u3002<\/li>\n<li>\u5206\u6790\u6578\u64da\u7684\u6700\u65b0\u72c0\u614b\u6216\u8da8\u52e2\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u64cd\u4f5c\u4e0d\u50c5\u80fd\u5e6b\u52a9\u4f01\u696d\u505a\u51fa\u66f4\u5feb\u7684\u6c7a\u7b56\uff0c\u9084\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u7528\u6027\u548c\u6e96\u78ba\u6027\u3002<\/p>\n<h2 id=\"mssql%e4%b8%ad%e5%8f%96%e6%9c%80%e5%a4%a7%e6%97%a5%e6%9c%9f%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-NGwpbiEnRA\">MSSQL\u4e2d\u53d6\u6700\u5927\u65e5\u671f\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u53d6\u6700\u5927\u65e5\u671f\u901a\u5e38\u4f7f\u7528\u805a\u5408\u51fd\u6578 <code>MAX()<\/code>\u3002\u9019\u500b\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u5f9e\u4e00\u7d44\u503c\u4e2d\u8fd4\u56de\u6700\u5927\u503c\uff0c\u5c0d\u65bc\u65e5\u671f\u985e\u578b\u7684\u6578\u64da\u4f86\u8aaa\uff0c\u5b83\u5c07\u8fd4\u56de\u6700\u65b0\u7684\u65e5\u671f\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e6%9f%a5%e8%a9%a2%e7%af%84%e4%be%8b-NGwpbiEnRA\">\u57fa\u672c\u67e5\u8a62\u7bc4\u4f8b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>Orders<\/code> \u7684\u8868\uff0c\u8a72\u8868\u5305\u542b\u4ee5\u4e0b\u5b57\u6bb5\uff1a<\/p>\n<ul>\n<li><code>OrderID<\/code> &#8211; \u8a02\u55ae\u7de8\u865f<\/li>\n<li><code>OrderDate<\/code> &#8211; \u8a02\u55ae\u65e5\u671f<\/li>\n<li><code>CustomerID<\/code> &#8211; \u5ba2\u6236\u7de8\u865f<\/li>\n<\/ul>\n<p>\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u7372\u53d6\u6700\u65b0\u7684\u8a02\u55ae\u65e5\u671f\uff1a<\/p>\n<pre><code>SELECT MAX(OrderDate) AS LatestOrderDate\nFROM Orders;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de <code>Orders<\/code> \u8868\u4e2d\u6700\u65b0\u7684\u8a02\u55ae\u65e5\u671f\u3002<\/p>\n<h2 id=\"%e9%80%b2%e9%9a%8e%e6%9f%a5%e8%a9%a2%ef%bc%9a%e7%8d%b2%e5%8f%96%e6%9c%80%e6%96%b0%e8%a8%82%e5%96%ae%e7%9a%84%e8%a9%b3%e7%b4%b0%e4%bf%a1%e6%81%af-NGwpbiEnRA\">\u9032\u968e\u67e5\u8a62\uff1a\u7372\u53d6\u6700\u65b0\u8a02\u55ae\u7684\u8a73\u7d30\u4fe1\u606f<\/h2>\n<p>\u5982\u679c\u6211\u5011\u4e0d\u50c5\u60f3\u8981\u7372\u53d6\u6700\u65b0\u7684\u8a02\u55ae\u65e5\u671f\uff0c\u9084\u60f3\u8981\u7372\u53d6\u8a72\u65e5\u671f\u5c0d\u61c9\u7684\u8a02\u55ae\u8a73\u7d30\u4fe1\u606f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8a62\u6216\u806f\u63a5\u4f86\u5be6\u73fe\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%a9%a2%e7%9a%84%e7%af%84%e4%be%8b-NGwpbiEnRA\">\u4f7f\u7528\u5b50\u67e5\u8a62\u7684\u7bc4\u4f8b<\/h3>\n<pre><code>SELECT *\nFROM Orders\nWHERE OrderDate = (SELECT MAX(OrderDate) FROM Orders);<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u5728\u6700\u65b0\u8a02\u55ae\u65e5\u671f\u4e0b\u7684\u8a02\u55ae\u8a73\u7d30\u4fe1\u606f\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8%e8%81%af%e6%8e%a5%e7%9a%84%e7%af%84%e4%be%8b-NGwpbiEnRA\">\u4f7f\u7528\u806f\u63a5\u7684\u7bc4\u4f8b<\/h3>\n<p>\u5982\u679c\u6211\u5011\u9084\u6709\u4e00\u500b\u540d\u70ba <code>Customers<\/code> \u7684\u8868\uff0c\u4e26\u5e0c\u671b\u7372\u53d6\u5ba2\u6236\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u53ef\u4ee5\u4f7f\u7528\u806f\u63a5\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SELECT o.*, c.CustomerName\nFROM Orders o\nJOIN Customers c ON o.CustomerID = c.CustomerID\nWHERE o.OrderDate = (SELECT MAX(OrderDate) FROM Orders);<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u6211\u5011\u4e0d\u50c5\u80fd\u7372\u5f97\u6700\u65b0\u7684\u8a02\u55ae\u4fe1\u606f\uff0c\u9084\u80fd\u7372\u53d6\u5c0d\u61c9\u7684\u5ba2\u6236\u540d\u7a31\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NGwpbiEnRA\">\u7e3d\u7d50<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u53d6\u6700\u5927\u65e5\u671f\u7684\u64cd\u4f5c\u975e\u5e38\u7c21\u55ae\u4e14\u9ad8\u6548\u3002\u901a\u904e\u4f7f\u7528 <code>MAX()<\/code> \u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u6700\u65b0\u7684\u65e5\u671f\uff0c\u4e26\u6839\u64da\u9700\u6c42\u9032\u884c\u9032\u4e00\u6b65\u7684\u67e5\u8a62\u548c\u5206\u6790\u3002\u7121\u8ad6\u662f\u55ae\u7d14\u7684\u65e5\u671f\u67e5\u8a62\u9084\u662f\u7d50\u5408\u5176\u4ed6\u8868\u7684\u8a73\u7d30\u4fe1\u606f\uff0cMSSQL\u90fd\u80fd\u63d0\u4f9b\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\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\u4f86\u904b\u884c\u60a8\u7684\u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u7a69\u5b9a\u4e14\u9ad8\u6548\u7684\u670d\u52d9\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u67e5\u8a62\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728MSSQL\u4e2d\u8f15\u9b06\u5be6\u73fe\u53d6\u6700\u5927\u65e5\u671f\u7684\u64cd\u4f5c\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\uff0c\u7c21\u5316\u6578\u64da\u8655\u7406\u6d41\u7a0b\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-164139","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164139","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=164139"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164139\/revisions"}],"predecessor-version":[{"id":164140,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164139\/revisions\/164140"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=164139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=164139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=164139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}