{"id":138903,"date":"2024-10-31T16:18:15","date_gmt":"2024-10-31T08:18:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138903\/"},"modified":"2024-10-31T16:18:16","modified_gmt":"2024-10-31T08:18:16","slug":"sql-server%e7%b0%a1%e5%96%ae%e6%9f%a5%e8%a9%a2-%e9%81%b8%e6%93%87%e5%88%97%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138903\/","title":{"rendered":"SQL Server\u7c21\u55ae\u67e5\u8a62&#8211;\u9078\u64c7\u5217\u8868"},"content":{"rendered":"<h1 id=\"sql-server%e7%b0%a1%e5%96%ae%e6%9f%a5%e8%a9%a2-%e9%81%b8%e6%93%87%e5%88%97%e8%a1%a8-xnjdYJXozH\">SQL Server\u7c21\u55ae\u67e5\u8a62&#8211;\u9078\u64c7\u5217\u8868<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cSQL Server\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u5b83\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u67e5\u8a62\u529f\u80fd\uff0c\u8b93\u7528\u6236\u80fd\u5920\u8f15\u9b06\u5730\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6240\u9700\u7684\u4fe1\u606f\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528SQL Server\u9032\u884c\u7c21\u55ae\u67e5\u8a62\uff0c\u7279\u5225\u662f\u9078\u64c7\u5217\u8868\u7684\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%81%b8%e6%93%87%e5%88%97%e8%a1%a8%ef%bc%9f-xnjdYJXozH\">\u4ec0\u9ebc\u662f\u9078\u64c7\u5217\u8868\uff1f<\/h2>\n<p>\u9078\u64c7\u5217\u8868\uff08SELECT statement\uff09\u662fSQL\u4e2d\u6700\u57fa\u672c\u7684\u67e5\u8a62\u8a9e\u53e5\u4e4b\u4e00\u3002\u5b83\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da\u3002\u901a\u904e\u9078\u64c7\u5217\u8868\uff0c\u7528\u6236\u53ef\u4ee5\u6307\u5b9a\u8981\u67e5\u8a62\u7684\u5217\u3001\u6578\u64da\u4f86\u6e90\uff08\u8868\uff09\u4ee5\u53ca\u67e5\u8a62\u7684\u689d\u4ef6\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-xnjdYJXozH\">\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u9078\u64c7\u5217\u8868\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column1, column2, ...\nFROM table_name\nWHERE condition;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>column1, column2, ...<\/code>\u662f\u7528\u6236\u5e0c\u671b\u6aa2\u7d22\u7684\u5217\u540d\uff0c<code>table_name<\/code>\u662f\u6578\u64da\u4f86\u6e90\u7684\u8868\u540d\uff0c\u800c<code>condition<\/code>\u5247\u662f\u53ef\u9078\u7684\u67e5\u8a62\u689d\u4ef6\u3002<\/p>\n<h2 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e5%be%9e%e5%93%a1%e5%b7%a5%e8%a1%a8%e4%b8%ad%e9%81%b8%e6%93%87%e6%95%b8%e6%93%9a-xnjdYJXozH\">\u7bc4\u4f8b\uff1a\u5f9e\u54e1\u5de5\u8868\u4e2d\u9078\u64c7\u6578\u64da<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>Employees<\/code>\u7684\u8868\uff0c\u8a72\u8868\u5305\u542b\u4ee5\u4e0b\u5217\uff1a<code>EmployeeID<\/code>\u3001<code>FirstName<\/code>\u3001<code>LastName<\/code>\u3001<code>Department<\/code>\u548c<code>Salary<\/code>\u3002<\/p>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u8a62\u6240\u6709\u54e1\u5de5\u7684\u540d\u5b57\u548c\u90e8\u9580\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT FirstName, LastName, Department\nFROM Employees;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u6240\u6709\u54e1\u5de5\u7684\u540d\u5b57\u3001\u59d3\u6c0f\u548c\u90e8\u9580\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8where%e5%ad%90%e5%8f%a5%e9%80%b2%e8%a1%8c%e6%a2%9d%e4%bb%b6%e6%9f%a5%e8%a9%a2-xnjdYJXozH\">\u4f7f\u7528WHERE\u5b50\u53e5\u9032\u884c\u689d\u4ef6\u67e5\u8a62<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u6211\u5011\u7d93\u5e38\u9700\u8981\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u4f86\u7be9\u9078\u6578\u64da\u3002\u9019\u6642\u53ef\u4ee5\u4f7f\u7528<code>WHERE<\/code>\u5b50\u53e5\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u53ea\u60f3\u67e5\u8a62\u85aa\u6c34\u9ad8\u65bc50000\u7684\u54e1\u5de5\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT FirstName, LastName, Salary\nFROM Employees\nWHERE Salary &gt; 50000;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u6240\u6709\u85aa\u6c34\u9ad8\u65bc50000\u7684\u54e1\u5de5\u7684\u540d\u5b57\u548c\u85aa\u6c34\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8order-by%e6%8e%92%e5%ba%8f%e7%b5%90%e6%9e%9c-xnjdYJXozH\">\u4f7f\u7528ORDER BY\u6392\u5e8f\u7d50\u679c<\/h2>\n<p>\u6709\u6642\u5019\uff0c\u6211\u5011\u5e0c\u671b\u67e5\u8a62\u7d50\u679c\u6309\u7167\u67d0\u500b\u5217\u9032\u884c\u6392\u5e8f\u3002\u9019\u6642\u53ef\u4ee5\u4f7f\u7528<code>ORDER BY<\/code>\u5b50\u53e5\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u6309\u7167\u85aa\u6c34\u5f9e\u9ad8\u5230\u4f4e\u7684\u9806\u5e8f\u986f\u793a\u54e1\u5de5\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT FirstName, LastName, Salary\nFROM Employees\nWHERE Salary &gt; 50000\nORDER BY Salary DESC;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u6240\u6709\u85aa\u6c34\u9ad8\u65bc50000\u7684\u54e1\u5de5\uff0c\u4e26\u6309\u7167\u85aa\u6c34\u5f9e\u9ad8\u5230\u4f4e\u7684\u9806\u5e8f\u6392\u5217\u3002<\/p>\n<h2 id=\"%e5%b0%8f%e7%b5%90-xnjdYJXozH\">\u5c0f\u7d50<\/h2>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u4ecb\u7d39\u4e86SQL Server\u4e2d\u9078\u64c7\u5217\u8868\u7684\u57fa\u672c\u7528\u6cd5\uff0c\u5305\u62ec\u5982\u4f55\u4f7f\u7528<code>SELECT<\/code>\u8a9e\u53e5\u6aa2\u7d22\u6578\u64da\u3001\u4f7f\u7528<code>WHERE<\/code>\u5b50\u53e5\u9032\u884c\u689d\u4ef6\u67e5\u8a62\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528<code>ORDER BY<\/code>\u5c0d\u7d50\u679c\u9032\u884c\u6392\u5e8f\u3002\u9019\u4e9b\u57fa\u672c\u64cd\u4f5c\u662f\u5b78\u7fd2SQL\u7684\u57fa\u790e\uff0c\u638c\u63e1\u5b83\u5011\u5c07\u6709\u52a9\u65bc\u7528\u6236\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u67e5\u8a62\u6578\u64da\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6709\u66f4\u6df1\u5165\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684SQL Server\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u548c\u9748\u6d3b\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728SQL Server\u4e2d\u9032\u884c\u7c21\u55ae\u67e5\u8a62\uff0c\u9078\u64c7\u7279\u5b9a\u6b04\u4f4d\u7684\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\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-138903","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138903","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=138903"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138903\/revisions"}],"predecessor-version":[{"id":138904,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138903\/revisions\/138904"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}