{"id":156615,"date":"2024-11-02T20:44:20","date_gmt":"2024-11-02T12:44:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/156615\/"},"modified":"2024-11-02T20:44:21","modified_gmt":"2024-11-02T12:44:21","slug":"%e5%88%86%e6%9e%90-mssql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%87%ba%e7%8f%be%e6%ac%a1%e6%95%b8%e5%88%86%e6%9e%90%e5%af%a6%e4%be%8b%ef%bc%88mssql-%e5%87%ba%e7%8f%be%e6%ac%a1%e6%95%b8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/156615\/","title":{"rendered":"\u5206\u6790 MSSQL \u6578\u64da\u5eab\u4e2d\u51fa\u73fe\u6b21\u6578\u5206\u6790\u5be6\u4f8b\uff08MSSQL \u51fa\u73fe\u6b21\u6578\uff09"},"content":{"rendered":"<h1 id=\"%e5%88%86%e6%9e%90-mssql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%87%ba%e7%8f%be%e6%ac%a1%e6%95%b8%e5%88%86%e6%9e%90%e5%af%a6%e4%be%8b%ef%bc%88mssql-%e5%87%ba%e7%8f%be%e6%ac%a1%e6%95%b8%ef%bc%89-ncmExdaszx\">\u5206\u6790 MSSQL \u6578\u64da\u5eab\u4e2d\u51fa\u73fe\u6b21\u6578\u5206\u6790\u5be6\u4f8b\uff08MSSQL \u51fa\u73fe\u6b21\u6578\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u5206\u6790\u6578\u64da\u7684\u51fa\u73fe\u6b21\u6578\u662f\u4e00\u500b\u91cd\u8981\u7684\u4efb\u52d9\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528 Microsoft SQL Server (MSSQL) \u7684\u60c5\u6cc1\u4e0b\u3002\u9019\u7a2e\u5206\u6790\u53ef\u4ee5\u5e6b\u52a9\u4f01\u696d\u4e86\u89e3\u6578\u64da\u7684\u5206\u4f48\u60c5\u6cc1\uff0c\u9032\u800c\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 MSSQL \u6578\u64da\u5eab\u4e2d\u9032\u884c\u51fa\u73fe\u6b21\u6578\u5206\u6790\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u4f8b\u548c\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e5%87%ba%e7%8f%be%e6%ac%a1%e6%95%b8%e5%88%86%e6%9e%90%e7%9a%84%e6%84%8f%e7%be%a9-ncmExdaszx\">\u51fa\u73fe\u6b21\u6578\u5206\u6790\u7684\u610f\u7fa9<\/h2>\n<p>\u51fa\u73fe\u6b21\u6578\u5206\u6790\u662f\u6307\u5c0d\u7279\u5b9a\u6578\u64da\u9805\u76ee\u5728\u6578\u64da\u5eab\u4e2d\u51fa\u73fe\u7684\u983b\u7387\u9032\u884c\u8a08\u7b97\u3002\u9019\u7a2e\u5206\u6790\u53ef\u4ee5\u7528\u65bc\u591a\u7a2e\u5834\u666f\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u4e86\u89e3\u5ba2\u6236\u884c\u70ba\uff1a\u5206\u6790\u5ba2\u6236\u5728\u7db2\u7ad9\u4e0a\u9ede\u64ca\u7684\u7522\u54c1\u6578\u91cf\u3002<\/li>\n<li>\u5e02\u5834\u8abf\u67e5\uff1a\u8a55\u4f30\u67d0\u4e00\u7522\u54c1\u5728\u4e0d\u540c\u5730\u5340\u7684\u92b7\u552e\u60c5\u6cc1\u3002<\/li>\n<li>\u6578\u64da\u6e05\u7406\uff1a\u8b58\u5225\u91cd\u8907\u6578\u64da\u6216\u7570\u5e38\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"mssql-%e4%b8%ad%e7%9a%84%e5%87%ba%e7%8f%be%e6%ac%a1%e6%95%b8%e6%9f%a5%e8%a9%a2-ncmExdaszx\">MSSQL \u4e2d\u7684\u51fa\u73fe\u6b21\u6578\u67e5\u8a62<\/h2>\n<p>\u5728 MSSQL \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 SQL \u67e5\u8a62\u8a9e\u8a00\u4f86\u9032\u884c\u51fa\u73fe\u6b21\u6578\u7684\u5206\u6790\u3002\u6700\u5e38\u7528\u7684\u8a9e\u53e5\u662f <code>SELECT<\/code> \u8a9e\u53e5\uff0c\u914d\u5408 <code>GROUP BY<\/code> \u548c <code>COUNT()<\/code> \u51fd\u6578\u4f86\u5be6\u73fe\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-ncmExdaszx\">\u57fa\u672c\u8a9e\u6cd5<\/h3>\n<pre><code>\nSELECT column_name, COUNT(*) AS occurrence_count\nFROM table_name\nGROUP BY column_name\nORDER BY occurrence_count DESC;\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u8a9e\u6cd5\u5c07\u8fd4\u56de\u6307\u5b9a\u5217\u4e2d\u6bcf\u500b\u503c\u7684\u51fa\u73fe\u6b21\u6578\uff0c\u4e26\u6309\u51fa\u73fe\u6b21\u6578\u964d\u5e8f\u6392\u5217\u3002<\/p>\n<h2 id=\"%e5%af%a6%e4%be%8b%e5%88%86%e6%9e%90-ncmExdaszx\">\u5be6\u4f8b\u5206\u6790<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>Sales<\/code> \u7684\u8868\u683c\uff0c\u5176\u4e2d\u5305\u542b\u4ee5\u4e0b\u5217\uff1a<\/p>\n<ul>\n<li><code>ProductID<\/code><\/li>\n<li><code>CustomerID<\/code><\/li>\n<li><code>SaleDate<\/code><\/li>\n<\/ul>\n<p>\u6211\u5011\u5e0c\u671b\u5206\u6790\u6bcf\u500b\u7522\u54c1\u7684\u92b7\u552e\u6b21\u6578\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\uff1a<\/p>\n<pre><code>\nSELECT ProductID, COUNT(*) AS SaleCount\nFROM Sales\nGROUP BY ProductID\nORDER BY SaleCount DESC;\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6bcf\u500b\u7522\u54c1\u7684\u92b7\u552e\u6b21\u6578\uff0c\u4e26\u6309\u92b7\u552e\u6b21\u6578\u5f9e\u9ad8\u5230\u4f4e\u6392\u5217\u3002<\/p>\n<h3 id=\"%e9%80%b2%e9%9a%8e%e6%9f%a5%e8%a9%a2-ncmExdaszx\">\u9032\u968e\u67e5\u8a62<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u9032\u4e00\u6b65\u5206\u6790\u67d0\u4e00\u7279\u5b9a\u6642\u9593\u7bc4\u570d\u5167\u7684\u92b7\u552e\u60c5\u6cc1\uff0c\u53ef\u4ee5\u5728\u67e5\u8a62\u4e2d\u6dfb\u52a0 <code>WHERE<\/code> \u5b50\u53e5\u3002\u4f8b\u5982\uff0c\u5206\u6790 2023 \u5e74 1 \u6708\u5230 3 \u6708\u7684\u92b7\u552e\u6578\u64da\uff1a<\/p>\n<pre><code>\nSELECT ProductID, COUNT(*) AS SaleCount\nFROM Sales\nWHERE SaleDate BETWEEN '2023-01-01' AND '2023-03-31'\nGROUP BY ProductID\nORDER BY SaleCount DESC;\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-ncmExdaszx\">\u7d50\u8ad6<\/h2>\n<p>\u51fa\u73fe\u6b21\u6578\u5206\u6790\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\uff0c\u80fd\u5920\u5e6b\u52a9\u4f01\u696d\u6df1\u5165\u4e86\u89e3\u5176\u6578\u64da\u3002\u900f\u904e MSSQL \u7684\u5f37\u5927\u67e5\u8a62\u529f\u80fd\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\u5206\u6790\u7d50\u679c\u3002\u7121\u8ad6\u662f\u57fa\u672c\u7684\u51fa\u73fe\u6b21\u6578\u67e5\u8a62\u9084\u662f\u9032\u968e\u7684\u6642\u9593\u7bc4\u570d\u5206\u6790\uff0cMSSQL \u90fd\u80fd\u63d0\u4f9b\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u5206\u6790\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 MSSQL \u6578\u64da\u5eab\u4e2d\u51fa\u73fe\u6b21\u6578\u5206\u6790\u7684\u5be6\u4f8b\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7d71\u8a08\u548c\u67e5\u8a62\u6578\u64da\u51fa\u73fe\u983b\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-156615","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156615","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=156615"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156615\/revisions"}],"predecessor-version":[{"id":156616,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156615\/revisions\/156616"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=156615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=156615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=156615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}