{"id":181778,"date":"2024-11-09T19:25:20","date_gmt":"2024-11-09T11:25:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/181778\/"},"modified":"2024-11-09T19:25:22","modified_gmt":"2024-11-09T11:25:22","slug":"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6sql-2023%e8%87%aa%e5%b8%b6%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%8a%9f%e8%83%bd%e8%88%87%e6%87%89%e7%94%a8%ef%bc%88sql-2023%e8%87%aa%e5%b8%b6%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/181778\/","title":{"rendered":"\u6df1\u5165\u63a2\u7a76SQL 2023\u81ea\u5e36\u6578\u64da\u5eab\u7684\u529f\u80fd\u8207\u61c9\u7528\uff08sql 2023\u81ea\u5e36\u6578\u64da\u5eab\uff09"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6sql-2023%e8%87%aa%e5%b8%b6%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%8a%9f%e8%83%bd%e8%88%87%e6%87%89%e7%94%a8-IVwjCQtHTF\">\u6df1\u5165\u63a2\u7a76SQL 2023\u81ea\u5e36\u6578\u64da\u5eab\u7684\u529f\u80fd\u8207\u61c9\u7528<\/h1>\n<p>\u96a8\u8457\u6578\u64da\u7ba1\u7406\u9700\u6c42\u7684\u65e5\u76ca\u589e\u9577\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\u7684\u91cd\u8981\u6027\u6108\u52a0\u51f8\u986f\u30022023\u5e74\uff0cSQL\u81ea\u5e36\u6578\u64da\u5eab\u7684\u529f\u80fd\u548c\u61c9\u7528\u4e5f\u96a8\u4e4b\u9032\u4e00\u6b65\u64f4\u5c55\uff0c\u70ba\u958b\u767c\u8005\u548c\u6578\u64da\u5206\u6790\u5e2b\u63d0\u4f9b\u4e86\u66f4\u5f37\u5927\u7684\u5de5\u5177\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eSQL 2023\u81ea\u5e36\u6578\u64da\u5eab\u7684\u4e3b\u8981\u529f\u80fd\u53ca\u5176\u61c9\u7528\u5834\u666f\u3002<\/p>\n<h2 id=\"sql-2023%e8%87%aa%e5%b8%b6%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e4%b8%bb%e8%a6%81%e5%8a%9f%e8%83%bd-IVwjCQtHTF\">SQL 2023\u81ea\u5e36\u6578\u64da\u5eab\u7684\u4e3b\u8981\u529f\u80fd<\/h2>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%89%b5%e5%bb%ba%e8%88%87%e7%ae%a1%e7%90%86-IVwjCQtHTF\">1. \u6578\u64da\u5eab\u7684\u5275\u5efa\u8207\u7ba1\u7406<\/h3>\n<p>SQL 2023\u7248\u672c\u63d0\u4f9b\u4e86\u66f4\u70ba\u76f4\u89c0\u7684\u6578\u64da\u5eab\u5275\u5efa\u5de5\u5177\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904e\u7c21\u55ae\u7684SQL\u8a9e\u53e5\u4f86\u5275\u5efa\u548c\u7ba1\u7406\u6578\u64da\u5eab\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\u53ef\u4ee5\u5275\u5efa\u4e00\u500b\u65b0\u7684\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>CREATE DATABASE my_database;<\/code><\/pre>\n<p>\u6b64\u5916\uff0cSQL 2023\u9084\u589e\u5f37\u4e86\u6578\u64da\u5eab\u7684\u7ba1\u7406\u529f\u80fd\uff0c\u652f\u6301\u66f4\u9748\u6d3b\u7684\u7528\u6236\u6b0a\u9650\u8a2d\u7f6e\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<h3 id=\"2-%e6%95%b8%e6%93%9a%e6%9f%a5%e8%a9%a2%e8%88%87%e6%93%8d%e4%bd%9c-IVwjCQtHTF\">2. \u6578\u64da\u67e5\u8a62\u8207\u64cd\u4f5c<\/h3>\n<p>\u5728\u6578\u64da\u67e5\u8a62\u65b9\u9762\uff0cSQL 2023\u5f15\u5165\u4e86\u66f4\u9ad8\u6548\u7684\u67e5\u8a62\u512a\u5316\u5668\uff0c\u80fd\u5920\u81ea\u52d5\u9078\u64c7\u6700\u4f73\u7684\u67e5\u8a62\u57f7\u884c\u8a08\u5283\u3002\u9019\u610f\u5473\u8457\u5373\u4f7f\u662f\u8907\u96dc\u7684\u67e5\u8a62\uff0c\u57f7\u884c\u901f\u5ea6\u4e5f\u5f97\u5230\u4e86\u986f\u8457\u63d0\u5347\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE age &gt; 18;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u6240\u6709\u5e74\u9f61\u5927\u65bc18\u6b72\u7684\u7528\u6236\u4fe1\u606f\uff0c\u5c55\u793a\u4e86SQL\u5728\u6578\u64da\u6aa2\u7d22\u65b9\u9762\u7684\u5f37\u5927\u80fd\u529b\u3002<\/p>\n<h3 id=\"3-%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90%e8%88%87%e5%a0%b1%e5%91%8a-IVwjCQtHTF\">3. \u6578\u64da\u5206\u6790\u8207\u5831\u544a<\/h3>\n<p>SQL 2023\u9084\u589e\u5f37\u4e86\u6578\u64da\u5206\u6790\u529f\u80fd\uff0c\u652f\u6301\u66f4\u8907\u96dc\u7684\u805a\u5408\u51fd\u6578\u548c\u7a97\u53e3\u51fd\u6578\uff0c\u5e6b\u52a9\u7528\u6236\u9032\u884c\u6df1\u5165\u7684\u6578\u64da\u5206\u6790\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\u53ef\u4ee5\u8a08\u7b97\u6bcf\u500b\u90e8\u9580\u7684\u5e73\u5747\u5de5\u8cc7\uff1a<\/p>\n<pre><code>SELECT department, AVG(salary) FROM employees GROUP BY department;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u529f\u80fd\u4f7f\u5f97\u4f01\u696d\u80fd\u5920\u66f4\u597d\u5730\u7406\u89e3\u5176\u696d\u52d9\u904b\u71df\u72c0\u6cc1\uff0c\u4e26\u505a\u51fa\u76f8\u61c9\u7684\u6c7a\u7b56\u3002<\/p>\n<h3 id=\"4-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%93%b4%e5%b1%95%e6%80%a7-IVwjCQtHTF\">4. \u6578\u64da\u5eab\u7684\u64f4\u5c55\u6027<\/h3>\n<p>\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u6578\u64da\u5eab\u7684\u64f4\u5c55\u6027\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002SQL 2023\u652f\u6301\u5206\u5340\u8868\u548c\u5206\u5e03\u5f0f\u6578\u64da\u5eab\u67b6\u69cb\uff0c\u9019\u4f7f\u5f97\u7528\u6236\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9748\u6d3b\u5730\u64f4\u5c55\u6578\u64da\u5eab\u3002\u4f8b\u5982\uff0c\u901a\u904e\u5206\u5340\u8868\uff0c\u53ef\u4ee5\u5c07\u6578\u64da\u6839\u64da\u67d0\u4e00\u5217\u7684\u503c\u5206\u6563\u5230\u4e0d\u540c\u7684\u7269\u7406\u5b58\u5132\u4e2d\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<h2 id=\"sql-2023%e8%87%aa%e5%b8%b6%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-IVwjCQtHTF\">SQL 2023\u81ea\u5e36\u6578\u64da\u5eab\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<h3 id=\"1-%e7%b6%b2%e7%ab%99%e5%be%8c%e7%ab%af%e6%95%b8%e6%93%9a%e7%ae%a1%e7%90%86-IVwjCQtHTF\">1. \u7db2\u7ad9\u5f8c\u7aef\u6578\u64da\u7ba1\u7406<\/h3>\n<p>\u8a31\u591a\u7db2\u7ad9\u4f7f\u7528SQL\u6578\u64da\u5eab\u4f86\u7ba1\u7406\u7528\u6236\u4fe1\u606f\u3001\u7522\u54c1\u6578\u64da\u548c\u4ea4\u6613\u8a18\u9304\u3002\u901a\u904eSQL\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u9032\u884c\u6578\u64da\u7684\u589e\u522a\u6539\u67e5\uff0c\u78ba\u4fdd\u7db2\u7ad9\u7684\u6b63\u5e38\u904b\u884c\u3002<\/p>\n<h3 id=\"2-%e5%95%86%e6%a5%ad%e6%99%ba%e8%83%bd%e8%88%87%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90-IVwjCQtHTF\">2. \u5546\u696d\u667a\u80fd\u8207\u6578\u64da\u5206\u6790<\/h3>\n<p>\u4f01\u696d\u53ef\u4ee5\u5229\u7528SQL 2023\u7684\u6578\u64da\u5206\u6790\u529f\u80fd\uff0c\u5c0d\u696d\u52d9\u6578\u64da\u9032\u884c\u6df1\u5165\u5206\u6790\uff0c\u5f9e\u800c\u767c\u73fe\u6f5b\u5728\u7684\u5546\u6a5f\u548c\u98a8\u96aa\u3002\u9019\u5c0d\u65bc\u5236\u5b9a\u5e02\u5834\u7b56\u7565\u548c\u63d0\u5347\u696d\u52d9\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h3 id=\"3-%e6%87%89%e7%94%a8%e7%a8%8b%e5%ba%8f%e9%96%8b%e7%99%bc-IVwjCQtHTF\">3. \u61c9\u7528\u7a0b\u5e8f\u958b\u767c<\/h3>\n<p>\u5728\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u4e2d\uff0cSQL\u6578\u64da\u5eab\u662f\u5b58\u5132\u548c\u6aa2\u7d22\u6578\u64da\u7684\u6838\u5fc3\u7d44\u4ef6\u3002\u958b\u767c\u8005\u53ef\u4ee5\u5229\u7528SQL\u8a9e\u8a00\u4f86\u5be6\u73fe\u6578\u64da\u7684\u6301\u4e45\u5316\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IVwjCQtHTF\">\u7e3d\u7d50<\/h2>\n<p>SQL 2023\u81ea\u5e36\u6578\u64da\u5eab\u7684\u529f\u80fd\u548c\u61c9\u7528\u70ba\u6578\u64da\u7ba1\u7406\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u652f\u6301\uff0c\u7121\u8ad6\u662f\u5728\u7db2\u7ad9\u5f8c\u7aef\u3001\u5546\u696d\u667a\u80fd\u9084\u662f\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u4e2d\uff0c\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002\u96a8\u8457\u6280\u8853\u7684\u9032\u6b65\uff0cSQL\u6578\u64da\u5eab\u7684\u672a\u4f86\u5c07\u66f4\u52a0\u5149\u660e\u3002\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u9999\u6e2f\u4f7f\u7528<a href=\"https:\/\/server.hk\">VPS<\/a>\u4f86\u642d\u5efa\u548c\u7ba1\u7406SQL\u6578\u64da\u5eab\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u7a76SQL 2023\u81ea\u5e36\u6578\u64da\u5eab\u7684\u529f\u80fd\u8207\u61c9\u7528\uff0c\u4e86\u89e3\u5176\u5f37\u5927\u7279\u6027\u53ca\u5728\u6578\u64da\u7ba1\u7406\u4e2d\u7684\u5be6\u969b\u61c9\u7528\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-181778","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181778","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=181778"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181778\/revisions"}],"predecessor-version":[{"id":181779,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181778\/revisions\/181779"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=181778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=181778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=181778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}