{"id":152111,"date":"2024-11-01T20:12:20","date_gmt":"2024-11-01T12:12:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152111\/"},"modified":"2024-11-01T20:12:21","modified_gmt":"2024-11-01T12:12:21","slug":"%e7%b7%a8%e5%af%ab%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e4%bd%bf%e7%94%a8sqlserver%e9%80%b2%e8%a1%8c%e6%9f%a5%e8%a9%a2%e5%92%8c%e7%b7%a8%e5%af%ab%ef%bc%88sqlserver%e6%9f%a5%e8%a9%a2%e6%88%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152111\/","title":{"rendered":"\u7de8\u5beb\u5982\u4f55\u9ad8\u6548\u4f7f\u7528SQLServer\u9032\u884c\u67e5\u8a62\u548c\u7de8\u5beb\uff08sqlserver\u67e5\u8a62\u6216\uff09"},"content":{"rendered":"<h1 id=\"%e7%b7%a8%e5%af%ab%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e4%bd%bf%e7%94%a8sql-server%e9%80%b2%e8%a1%8c%e6%9f%a5%e8%a9%a2%e5%92%8c%e7%b7%a8%e5%af%ab-vJBGHlkPfK\">\u7de8\u5beb\u5982\u4f55\u9ad8\u6548\u4f7f\u7528SQL Server\u9032\u884c\u67e5\u8a62\u548c\u7de8\u5beb<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL Server\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u696d\u52d9\u5834\u666f\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0cSQL Server\u90fd\u80fd\u5920\u9ad8\u6548\u5730\u8655\u7406\u548c\u67e5\u8a62\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u9ad8\u6548\u4f7f\u7528SQL Server\u9032\u884c\u67e5\u8a62\u548c\u7de8\u5beb\uff0c\u5e6b\u52a9\u7528\u6236\u63d0\u5347\u6578\u64da\u64cd\u4f5c\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"%e7%90%86%e8%a7%a3sql-server%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-vJBGHlkPfK\">\u7406\u89e3SQL Server\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u958b\u59cb\u7de8\u5beb\u67e5\u8a62\u4e4b\u524d\uff0c\u4e86\u89e3SQL Server\u7684\u57fa\u672c\u6982\u5ff5\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002SQL Server\u4f7f\u7528\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff08SQL\uff09\u4f86\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002SQL\u8a9e\u8a00\u7684\u57fa\u672c\u7d44\u6210\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5b9a\u7fa9\u8a9e\u8a00\uff08DDL\uff09<\/strong>\uff1a\u7528\u65bc\u5b9a\u7fa9\u6578\u64da\u5eab\u7d50\u69cb\uff0c\u5982\u5275\u5efa\u3001\u4fee\u6539\u548c\u522a\u9664\u8868\u3002<\/li>\n<li><strong>\u6578\u64da\u64cd\u4f5c\u8a9e\u8a00\uff08DML\uff09<\/strong>\uff1a\u7528\u65bc\u67e5\u8a62\u548c\u64cd\u4f5c\u6578\u64da\uff0c\u5982\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u63a7\u5236\u8a9e\u8a00\uff08DCL\uff09<\/strong>\uff1a\u7528\u65bc\u63a7\u5236\u5c0d\u6578\u64da\u7684\u8a2a\u554f\u6b0a\u9650\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%ab%98%e6%95%88%e6%9f%a5%e8%a9%a2%e7%9a%84%e6%8a%80%e5%b7%a7-vJBGHlkPfK\">\u9ad8\u6548\u67e5\u8a62\u7684\u6280\u5de7<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95-vJBGHlkPfK\">1. \u4f7f\u7528\u7d22\u5f15<\/h3>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u3002\u901a\u904e\u5728\u8868\u7684\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u52a0\u901f\u67e5\u8a62\u7684\u57f7\u884c\u901f\u5ea6\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u7d22\u5f15\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>CREATE INDEX index_name ON table_name (column_name);<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5728\u201cCustomers\u201d\u8868\u7684\u201cLastName\u201d\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE INDEX idx_lastname ON Customers (LastName);<\/code><\/pre>\n<h3 id=\"2-%e9%81%bf%e5%85%8d%e4%bd%bf%e7%94%a8select-vJBGHlkPfK\">2. \u907f\u514d\u4f7f\u7528SELECT *<\/h3>\n<p>\u5728\u67e5\u8a62\u6642\uff0c\u907f\u514d\u4f7f\u7528\u201cSELECT *\u201d\u4f86\u9078\u64c7\u6240\u6709\u5217\u3002\u9019\u6a23\u6703\u5c0e\u81f4\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u50b3\u8f38\uff0c\u5f71\u97ff\u6027\u80fd\u3002\u61c9\u8a72\u660e\u78ba\u6307\u5b9a\u6240\u9700\u7684\u5217\uff1a<\/p>\n<pre><code>SELECT FirstName, LastName FROM Customers;<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8where%e5%ad%90%e5%8f%a5%e9%81%8e%e6%bf%be%e6%95%b8%e6%93%9a-vJBGHlkPfK\">3. \u4f7f\u7528WHERE\u5b50\u53e5\u904e\u6ffe\u6578\u64da<\/h3>\n<p>\u4f7f\u7528WHERE\u5b50\u53e5\u53ef\u4ee5\u6709\u6548\u5730\u904e\u6ffe\u6578\u64da\uff0c\u6e1b\u5c11\u67e5\u8a62\u7d50\u679c\u7684\u6578\u91cf\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM Orders WHERE OrderDate &gt; '2023-01-01';<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8join%e8%80%8c%e9%9d%9e%e5%ad%90%e6%9f%a5%e8%a9%a2-vJBGHlkPfK\">4. \u4f7f\u7528JOIN\u800c\u975e\u5b50\u67e5\u8a62<\/h3>\n<p>\u5728\u9700\u8981\u5f9e\u591a\u500b\u8868\u4e2d\u6aa2\u7d22\u6578\u64da\u6642\uff0c\u4f7f\u7528JOIN\u64cd\u4f5c\u901a\u5e38\u6bd4\u5b50\u67e5\u8a62\u66f4\u9ad8\u6548\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528INNER JOIN\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT Customers.FirstName, Orders.OrderDate\nFROM Customers\nINNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID;<\/code><\/pre>\n<h2 id=\"%e7%b7%a8%e5%af%ab%e9%ab%98%e6%95%88%e7%9a%84sql%e4%bb%a3%e7%a2%bc-vJBGHlkPfK\">\u7de8\u5beb\u9ad8\u6548\u7684SQL\u4ee3\u78bc<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e4%ba%8b%e5%8b%99-vJBGHlkPfK\">1. \u4f7f\u7528\u4e8b\u52d9<\/h3>\n<p>\u5728\u57f7\u884c\u591a\u500b\u6578\u64da\u64cd\u4f5c\u6642\uff0c\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u4ee5\u4e0b\u662f\u958b\u59cb\u548c\u63d0\u4ea4\u4e8b\u52d9\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>BEGIN TRANSACTION;\n-- SQL\u64cd\u4f5c\nCOMMIT;<\/code><\/pre>\n<h3 id=\"2-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e8%a8%88%e5%8a%83-vJBGHlkPfK\">2. \u512a\u5316\u67e5\u8a62\u8a08\u5283<\/h3>\n<p>SQL Server\u6703\u81ea\u52d5\u751f\u6210\u67e5\u8a62\u8a08\u5283\uff0c\u4f46\u7528\u6236\u4e5f\u53ef\u4ee5\u4f7f\u7528\u201cSET STATISTICS TIME ON\u201d\u4f86\u67e5\u770b\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\uff0c\u5f9e\u800c\u9032\u884c\u512a\u5316\u3002<\/p>\n<pre><code>SET STATISTICS TIME ON;\nSELECT * FROM Products WHERE Price &lt; 100;<\/code><\/pre>\n<h3 id=\"3-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7%e6%95%b8%e6%93%9a%e5%ba%ab-vJBGHlkPfK\">3. \u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab<\/h3>\n<p>\u5b9a\u671f\u9032\u884c\u6578\u64da\u5eab\u7dad\u8b77\uff0c\u5982\u91cd\u5efa\u7d22\u5f15\u548c\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff0c\u53ef\u4ee5\u4fdd\u6301\u67e5\u8a62\u6027\u80fd\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-vJBGHlkPfK\">\u7e3d\u7d50<\/h2>\n<p>\u9ad8\u6548\u4f7f\u7528SQL Server\u9032\u884c\u67e5\u8a62\u548c\u7de8\u5beb\u9700\u8981\u638c\u63e1\u57fa\u672c\u6982\u5ff5\u3001\u512a\u5316\u67e5\u8a62\u548c\u7de8\u5beb\u9ad8\u6548\u7684SQL\u4ee3\u78bc\u3002\u901a\u904e\u4f7f\u7528\u7d22\u5f15\u3001\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u9078\u64c7\u3001\u5408\u7406\u4f7f\u7528JOIN\u548c\u4e8b\u52d9\u7b49\u6280\u5de7\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u64cd\u4f5c\u7684\u6548\u7387\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u80fd\u70ba\u4f01\u696d\u63d0\u4f9b\u7a69\u5b9a\u7684\u6578\u64da\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u9ad8\u6548\u4f7f\u7528SQL Server\u9032\u884c\u67e5\u8a62\u548c\u7de8\u5beb\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u80fd\u529b\uff0c\u512a\u5316\u6027\u80fd\uff0c\u7c21\u5316\u6578\u64da\u5206\u6790\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-152111","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152111","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=152111"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152111\/revisions"}],"predecessor-version":[{"id":152112,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152111\/revisions\/152112"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}