{"id":160005,"date":"2024-11-03T19:29:21","date_gmt":"2024-11-03T11:29:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160005\/"},"modified":"2024-11-03T19:29:23","modified_gmt":"2024-11-03T11:29:23","slug":"mssql-%e6%95%99%e7%a8%8b-sql-%e5%88%a5%e5%90%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160005\/","title":{"rendered":"MSSQL \u6559\u7a0b SQL \u5225\u540d"},"content":{"rendered":"<h1 id=\"mssql-%e6%95%99%e7%a8%8b-sql-%e5%88%a5%e5%90%8d-YIMPnqXngA\">MSSQL \u6559\u7a0b SQL \u5225\u540d<\/h1>\n<p>\u5728\u4f7f\u7528 Microsoft SQL Server (MSSQL) \u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0cSQL \u5225\u540d\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\u3002SQL \u5225\u540d\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u7c21\u5316\u67e5\u8a62\uff0c\u589e\u5f37\u53ef\u8b80\u6027\uff0c\u4e26\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u7dad\u8b77\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e SQL \u5225\u540d\u7684\u6982\u5ff5\u3001\u4f7f\u7528\u65b9\u6cd5\u53ca\u5176\u512a\u52e2\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-sql-%e5%88%a5%e5%90%8d%ef%bc%9f-YIMPnqXngA\">\u4ec0\u9ebc\u662f SQL \u5225\u540d\uff1f<\/h2>\n<p>SQL \u5225\u540d\u662f\u7528\u65bc\u7d66\u8868\u6216\u5217\u6307\u5b9a\u4e00\u500b\u81e8\u6642\u540d\u7a31\u7684\u529f\u80fd\u3002\u9019\u500b\u81e8\u6642\u540d\u7a31\u5728\u67e5\u8a62\u7684\u57f7\u884c\u671f\u9593\u6709\u6548\uff0c\u4e26\u4e0d\u6703\u6539\u8b8a\u6578\u64da\u5eab\u4e2d\u7684\u5be6\u969b\u7d50\u69cb\u3002\u4f7f\u7528\u5225\u540d\u53ef\u4ee5\u4f7f\u67e5\u8a62\u66f4\u5177\u53ef\u8b80\u6027\uff0c\u7279\u5225\u662f\u5728\u6d89\u53ca\u591a\u500b\u8868\u6216\u8907\u96dc\u8a08\u7b97\u6642\u3002<\/p>\n<h2 id=\"sql-%e5%88%a5%e5%90%8d%e7%9a%84%e9%a1%9e%e5%9e%8b-YIMPnqXngA\">SQL \u5225\u540d\u7684\u985e\u578b<\/h2>\n<ul>\n<li><strong>\u5217\u5225\u540d\uff1a<\/strong>\u7528\u65bc\u7d66\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u5217\u6307\u5b9a\u4e00\u500b\u65b0\u7684\u540d\u7a31\u3002<\/li>\n<li><strong>\u8868\u5225\u540d\uff1a<\/strong>\u7528\u65bc\u7d66\u8868\u6307\u5b9a\u4e00\u500b\u65b0\u7684\u540d\u7a31\uff0c\u901a\u5e38\u5728\u806f\u63a5\u67e5\u8a62\u4e2d\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-sql-%e5%88%a5%e5%90%8d-YIMPnqXngA\">\u5982\u4f55\u4f7f\u7528 SQL \u5225\u540d<\/h2>\n<h3 id=\"%e5%88%97%e5%88%a5%e5%90%8d%e7%9a%84%e4%bd%bf%e7%94%a8-YIMPnqXngA\">\u5217\u5225\u540d\u7684\u4f7f\u7528<\/h3>\n<p>\u5217\u5225\u540d\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column_name AS alias_name\nFROM table_name;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>Employees<\/code> \u7684\u8868\uff0c\u5305\u542b <code>FirstName<\/code> \u548c <code>LastName<\/code> \u5169\u500b\u5217\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u5217\u5225\u540d\u4f86\u7c21\u5316\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT FirstName AS \u540d\u5b57, LastName AS \u59d3\u6c0f\nFROM Employees;<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u5217\u5c07\u986f\u793a\u70ba\u201c\u540d\u5b57\u201d\u548c\u201c\u59d3\u6c0f\u201d\uff0c\u800c\u4e0d\u662f\u539f\u59cb\u7684\u5217\u540d\u3002<\/p>\n<h3 id=\"%e8%a1%a8%e5%88%a5%e5%90%8d%e7%9a%84%e4%bd%bf%e7%94%a8-YIMPnqXngA\">\u8868\u5225\u540d\u7684\u4f7f\u7528<\/h3>\n<p>\u8868\u5225\u540d\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column_name\nFROM table_name AS alias_name;<\/code><\/pre>\n<p>\u5728\u806f\u63a5\u67e5\u8a62\u4e2d\uff0c\u8868\u5225\u540d\u7279\u5225\u6709\u7528\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u5169\u500b\u8868\uff1a<code>Employees<\/code> \u548c <code>Departments<\/code>\uff0c\u6211\u5011\u60f3\u8981\u67e5\u8a62\u6bcf\u4f4d\u54e1\u5de5\u53ca\u5176\u6240\u5c6c\u90e8\u9580\u7684\u540d\u7a31\uff1a<\/p>\n<pre><code>SELECT e.FirstName, e.LastName, d.DepartmentName\nFROM Employees AS e\nJOIN Departments AS d ON e.DepartmentID = d.DepartmentID;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86 <code>e<\/code> \u548c <code>d<\/code> \u4f5c\u70ba <code>Employees<\/code> \u548c <code>Departments<\/code> \u7684\u5225\u540d\uff0c\u9019\u6a23\u53ef\u4ee5\u4f7f\u67e5\u8a62\u66f4\u7c21\u6f54\u3002<\/p>\n<h2 id=\"sql-%e5%88%a5%e5%90%8d%e7%9a%84%e5%84%aa%e5%8b%a2-YIMPnqXngA\">SQL \u5225\u540d\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u53ef\u8b80\u6027\uff1a<\/strong>\u4f7f\u7528\u5225\u540d\u53ef\u4ee5\u4f7f\u67e5\u8a62\u7d50\u679c\u66f4\u6613\u65bc\u7406\u89e3\uff0c\u7279\u5225\u662f\u7576\u5217\u540d\u8f03\u9577\u6216\u4e0d\u76f4\u89c0\u6642\u3002<\/li>\n<li><strong>\u7c21\u5316\u67e5\u8a62\uff1a<\/strong>\u5728\u8907\u96dc\u7684\u67e5\u8a62\u4e2d\uff0c\u4f7f\u7528\u5225\u540d\u53ef\u4ee5\u6e1b\u5c11\u4ee3\u78bc\u7684\u5197\u9577\u6027\uff0c\u8b93\u67e5\u8a62\u66f4\u6e05\u6670\u3002<\/li>\n<li><strong>\u907f\u514d\u547d\u540d\u885d\u7a81\uff1a<\/strong>\u5728\u806f\u63a5\u591a\u500b\u8868\u6642\uff0c\u4f7f\u7528\u5225\u540d\u53ef\u4ee5\u907f\u514d\u5217\u540d\u885d\u7a81\uff0c\u78ba\u4fdd\u67e5\u8a62\u7684\u6b63\u78ba\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-YIMPnqXngA\">\u7e3d\u7d50<\/h2>\n<p>SQL \u5225\u540d\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u63d0\u9ad8\u67e5\u8a62\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u5217\u5225\u540d\u9084\u662f\u8868\u5225\u540d\uff0c\u6b63\u78ba\u7684\u4f7f\u7528\u90fd\u80fd\u4f7f\u6578\u64da\u5eab\u67e5\u8a62\u66f4\u52a0\u9ad8\u6548\u3002\u5728\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u4e86\u89e3\u4e26\u5584\u7528 SQL \u5225\u540d\u5c07\u5c0d\u60a8\u7684\u5de5\u4f5c\u5927\u6709\u88e8\u76ca\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\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2 MSSQL \u6559\u7a0b\u4e2d\u7684 SQL \u5225\u540d\uff0c\u638c\u63e1\u5982\u4f55\u4f7f\u7528\u5225\u540d\u7c21\u5316\u67e5\u8a62\u548c\u63d0\u9ad8\u53ef\u8b80\u6027\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\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-160005","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160005","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=160005"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160005\/revisions"}],"predecessor-version":[{"id":160006,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160005\/revisions\/160006"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}