{"id":166639,"date":"2024-11-05T18:05:20","date_gmt":"2024-11-05T10:05:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166639\/"},"modified":"2024-11-05T18:05:21","modified_gmt":"2024-11-05T10:05:21","slug":"%e5%bf%ab%e9%80%9f%e6%98%93%e5%ad%b8%ef%bc%9asql%e8%aa%9e%e6%b3%95%e5%88%9d%e6%ad%a5%ef%bc%8c%e8%bc%95%e9%ac%86%e5%bb%ba%e7%ab%8b%e6%95%b8%e6%93%9a%e5%ba%ab-sql%e8%aa%9e%e6%b3%95%e5%bb%ba%e7%ab%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166639\/","title":{"rendered":"\u5feb\u901f\u6613\u5b78\uff1aSQL\u8a9e\u6cd5\u521d\u6b65\uff0c\u8f15\u9b06\u5efa\u7acb\u6578\u64da\u5eab (sql\u8a9e\u6cd5\u5efa\u7acb\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%bf%ab%e9%80%9f%e6%98%93%e5%ad%b8%ef%bc%9asql%e8%aa%9e%e6%b3%95%e5%88%9d%e6%ad%a5%ef%bc%8c%e8%bc%95%e9%ac%86%e5%bb%ba%e7%ab%8b%e6%95%b8%e6%93%9a%e5%ba%ab-tNYQvaEXnz\">\u5feb\u901f\u6613\u5b78\uff1aSQL\u8a9e\u6cd5\u521d\u6b65\uff0c\u8f15\u9b06\u5efa\u7acb\u6578\u64da\u5eab<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u8207\u6578\u64da\u5eab\u4e92\u52d5\u7684\u4e3b\u8981\u8a9e\u8a00\u4e4b\u4e00\u3002\u7121\u8ad6\u662f\u958b\u767c\u8005\u9084\u662f\u6578\u64da\u5206\u6790\u5e2b\uff0c\u638c\u63e1SQL\u8a9e\u6cd5\u90fd\u662f\u4e00\u9805\u57fa\u672c\u6280\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39SQL\u7684\u57fa\u672c\u8a9e\u6cd5\uff0c\u5e6b\u52a9\u8b80\u8005\u8f15\u9b06\u5efa\u7acb\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afsql%ef%bc%9f-tNYQvaEXnz\">\u4ec0\u9ebc\u662fSQL\uff1f<\/h2>\n<p>SQL\u662f\u4e00\u7a2e\u5c08\u9580\u7528\u65bc\u7ba1\u7406\u548c\u64cd\u4f5c\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7684\u8a9e\u8a00\u3002\u5b83\u5141\u8a31\u7528\u6236\u57f7\u884c\u5404\u7a2e\u64cd\u4f5c\uff0c\u5305\u62ec\u67e5\u8a62\u6578\u64da\u3001\u63d2\u5165\u6578\u64da\u3001\u66f4\u65b0\u6578\u64da\u548c\u522a\u9664\u6578\u64da\u3002SQL\u7684\u8a9e\u6cd5\u7c21\u55ae\u6613\u5b78\uff0c\u9069\u5408\u521d\u5b78\u8005\u5165\u9580\u3002<\/p>\n<h2 id=\"%e5%bb%ba%e7%ab%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-tNYQvaEXnz\">\u5efa\u7acb\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f<\/h2>\n<p>\u5728\u958b\u59cb\u4f7f\u7528SQL\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u5982\u4f55\u5efa\u7acb\u4e00\u500b\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u5efa\u7acb\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e9%80%a3%e6%8e%a5%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab%e7%ae%a1%e7%90%86%e7%b3%bb%e7%b5%b1-tNYQvaEXnz\">1. \u9023\u63a5\u5230\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71<\/h3>\n<p>\u5728\u4f7f\u7528SQL\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u9023\u63a5\u5230\u4e00\u500b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08\u5982MySQL\u3001PostgreSQL\u6216SQLite\uff09\u3002\u9019\u901a\u5e38\u901a\u904e\u547d\u4ee4\u884c\u5de5\u5177\u6216\u5716\u5f62\u7528\u6236\u754c\u9762\uff08GUI\uff09\u4f86\u5b8c\u6210\u3002<\/p>\n<h3 id=\"2-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab-tNYQvaEXnz\">2. \u5275\u5efa\u6578\u64da\u5eab<\/h3>\n<p>\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u6cd5\u4f86\u5275\u5efa\u4e00\u500b\u65b0\u7684\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>CREATE DATABASE my_database;<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201cmy_database\u201d\u7684\u6578\u64da\u5eab\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab-tNYQvaEXnz\">3. \u4f7f\u7528\u6578\u64da\u5eab<\/h3>\n<p>\u5275\u5efa\u6578\u64da\u5eab\u5f8c\uff0c\u60a8\u9700\u8981\u9078\u64c7\u4f7f\u7528\u5b83\uff1a<\/p>\n<pre><code>USE my_database;<\/code><\/pre>\n<h3 id=\"4-%e5%89%b5%e5%bb%ba%e8%a1%a8%e6%a0%bc-tNYQvaEXnz\">4. \u5275\u5efa\u8868\u683c<\/h3>\n<p>\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u662f\u4ee5\u8868\u683c\u7684\u5f62\u5f0f\u5b58\u5132\u7684\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\u5275\u5efa\u4e00\u500b\u8868\u683c\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    username VARCHAR(50) NOT NULL,\n    email VARCHAR(100) NOT NULL\n);<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8868\u683c\uff0c\u5305\u542b\u4e09\u500b\u5b57\u6bb5\uff1aid\u3001username\u548cemail\u3002<\/p>\n<h3 id=\"5-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-tNYQvaEXnz\">5. \u63d2\u5165\u6578\u64da<\/h3>\n<p>\u5275\u5efa\u8868\u683c\u5f8c\uff0c\u60a8\u53ef\u4ee5\u5411\u8868\u683c\u4e2d\u63d2\u5165\u6578\u64da\uff1a<\/p>\n<pre><code>INSERT INTO users (username, email) VALUES ('john_doe', 'john@example.com');<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u5728\u201cusers\u201d\u8868\u683c\u4e2d\u63d2\u5165\u4e00\u689d\u65b0\u8a18\u9304\u3002<\/p>\n<h3 id=\"6-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-tNYQvaEXnz\">6. \u67e5\u8a62\u6578\u64da<\/h3>\n<p>\u8981\u67e5\u8a62\u8868\u683c\u4e2d\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528SELECT\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT * FROM users;<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u8fd4\u56de\u201cusers\u201d\u8868\u683c\u4e2d\u7684\u6240\u6709\u8a18\u9304\u3002<\/p>\n<h3 id=\"7-%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-tNYQvaEXnz\">7. \u66f4\u65b0\u6578\u64da<\/h3>\n<p>\u5982\u679c\u9700\u8981\u66f4\u65b0\u8868\u683c\u4e2d\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528UPDATE\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE users SET email = 'john_doe@example.com' WHERE username = 'john_doe';<\/code><\/pre>\n<h3 id=\"8-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-tNYQvaEXnz\">8. \u522a\u9664\u6578\u64da<\/h3>\n<p>\u8981\u522a\u9664\u8868\u683c\u4e2d\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528DELETE\u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM users WHERE username = 'john_doe';<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-tNYQvaEXnz\">\u7e3d\u7d50<\/h2>\n<p>\u638c\u63e1SQL\u8a9e\u6cd5\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u57fa\u790e\uff0c\u901a\u904e\u7c21\u55ae\u7684\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5efa\u7acb\u548c\u7ba1\u7406\u6578\u64da\u5eab\u3002\u7121\u8ad6\u60a8\u662f\u521d\u5b78\u8005\u9084\u662f\u6709\u7d93\u9a57\u7684\u958b\u767c\u8005\uff0c\u5b78\u7fd2SQL\u90fd\u5c07\u70ba\u60a8\u7684\u8077\u696d\u751f\u6daf\u589e\u6dfb\u50f9\u503c\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u6258\u7ba1\u670d\u52d9\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u4ee5\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5b89\u5168\u548c\u9ad8\u6548\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u6613\u5b78\u7684SQL\u8a9e\u6cd5\u521d\u6b65\u6307\u5357\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u5efa\u7acb\u6578\u64da\u5eab\uff0c\u638c\u63e1\u57fa\u672c\u64cd\u4f5c\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u80fd\u529b\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-166639","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166639","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=166639"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166639\/revisions"}],"predecessor-version":[{"id":166640,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166639\/revisions\/166640"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166639"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166639"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}