{"id":60217,"date":"2024-10-13T01:01:17","date_gmt":"2024-10-12T17:01:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60217\/"},"modified":"2024-10-13T01:01:18","modified_gmt":"2024-10-12T17:01:18","slug":"c%e8%aa%9e%e8%a8%80%e4%b8%ad%e5%a6%82%e4%bd%95%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e7%94%a8%e6%88%b6%e4%bf%a1%e6%81%af%ef%bc%9f-c%e6%80%8e%e9%ba%bc%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60217\/","title":{"rendered":"C\u8a9e\u8a00\u4e2d\u5982\u4f55\u522a\u9664\u6578\u64da\u5eab\u7528\u6236\u4fe1\u606f\uff1f (c\u600e\u9ebc\u522a\u9664\u6578\u64da\u5eab\u7528\u6236\u4fe1\u606f)"},"content":{"rendered":"<h1 id=\"c%e8%aa%9e%e8%a8%80%e4%b8%ad%e5%a6%82%e4%bd%95%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e7%94%a8%e6%88%b6%e4%bf%a1%e6%81%af%ef%bc%9f-weSlCGpKeq\">C\u8a9e\u8a00\u4e2d\u5982\u4f55\u522a\u9664\u6578\u64da\u5eab\u7528\u6236\u4fe1\u606f\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u7121\u8ad6\u662f\u4f01\u696d\u9084\u662f\u500b\u4eba\u9805\u76ee\uff0c\u6578\u64da\u5eab\u90fd\u627f\u8f09\u8457\u5927\u91cf\u7684\u7528\u6236\u4fe1\u606f\u3002\u7576\u9700\u8981\u522a\u9664\u67d0\u500b\u7528\u6236\u7684\u4fe1\u606f\u6642\uff0c\u4f7f\u7528C\u8a9e\u8a00\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u522a\u9664\u6578\u64da\u5eab\u7528\u6236\u4fe1\u606f\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-weSlCGpKeq\">\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n<p>\u5728\u522a\u9664\u7528\u6236\u4fe1\u606f\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u8207\u6578\u64da\u5eab\u5efa\u7acb\u9023\u63a5\u3002\u9019\u901a\u5e38\u9700\u8981\u4f7f\u7528\u76f8\u61c9\u7684\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f\u3002\u4ee5MySQL\u70ba\u4f8b\uff0c\u60a8\u9700\u8981\u5305\u542b\u76f8\u61c9\u7684\u982d\u6587\u4ef6\u4e26\u521d\u59cb\u5316\u9023\u63a5\u3002<\/p>\n<pre><code>#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;mysql\/mysql.h&gt;\n\nMYSQL *conn;\nconn = mysql_init(NULL);\nif (conn == NULL) {\n    fprintf(stderr, \"mysql_init() failedn\");\n    return EXIT_FAILURE;\n}\n\nif (mysql_real_connect(conn, \"localhost\", \"user\", \"password\", \"database\", 0, NULL, 0) == NULL) {\n    fprintf(stderr, \"mysql_real_connect() failedn\");\n    mysql_close(conn);\n    return EXIT_FAILURE;\n}\n<\/code><\/pre>\n<h2 id=\"%e5%88%aa%e9%99%a4%e7%94%a8%e6%88%b6%e4%bf%a1%e6%81%af%e7%9a%84sql%e8%aa%9e%e5%8f%a5-weSlCGpKeq\">\u522a\u9664\u7528\u6236\u4fe1\u606f\u7684SQL\u8a9e\u53e5<\/h2>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u522a\u9664\u7528\u6236\u4fe1\u606f\u3002\u522a\u9664\u64cd\u4f5c\u901a\u5e38\u4f7f\u7528DELETE\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684DELETE\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<pre><code>DELETE FROM users WHERE user_id = ?;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c`users`\u662f\u7528\u6236\u4fe1\u606f\u8868\u7684\u540d\u7a31\uff0c`user_id`\u662f\u7528\u6236\u7684\u552f\u4e00\u6a19\u8b58\u7b26\u3002\u60a8\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u66ff\u63db\u9019\u4e9b\u503c\u3002<\/p>\n<h2 id=\"%e5%9f%b7%e8%a1%8c%e5%88%aa%e9%99%a4%e6%93%8d%e4%bd%9c-weSlCGpKeq\">\u57f7\u884c\u522a\u9664\u64cd\u4f5c<\/h2>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u6e96\u5099\u548c\u57f7\u884c\u9019\u500bSQL\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>const char *query = \"DELETE FROM users WHERE user_id = ?\";\nMYSQL_STMT *stmt;\nstmt = mysql_stmt_init(conn);\nmysql_stmt_prepare(stmt, query, strlen(query));\n\nunsigned long user_id = 1; \/\/ \u5047\u8a2d\u8981\u522a\u9664\u7684\u7528\u6236ID\nmysql_stmt_bind_param(stmt, \"i\", &amp;user_id);\nif (mysql_stmt_execute(stmt)) {\n    fprintf(stderr, \"mysql_stmt_execute() failedn\");\n}\n\nmysql_stmt_close(stmt);\n<\/code><\/pre>\n<h2 id=\"%e9%97%9c%e9%96%89%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-weSlCGpKeq\">\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n<p>\u5b8c\u6210\u522a\u9664\u64cd\u4f5c\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\u4ee5\u91cb\u653e\u8cc7\u6e90\uff1a<\/p>\n<pre><code>mysql_close(conn);\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-weSlCGpKeq\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u9032\u884c\u6578\u64da\u5099\u4efd\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u522a\u9664\u91cd\u8981\u4fe1\u606f\u3002<\/li>\n<li>\u78ba\u4fdd\u5728\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u6642\uff0c\u4f7f\u7528\u9069\u7576\u7684\u689d\u4ef6\u4f86\u907f\u514d\u522a\u9664\u932f\u8aa4\u7684\u8a18\u9304\u3002<\/li>\n<li>\u8003\u616e\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u7279\u5225\u662f\u5728\u6d89\u53ca\u591a\u500b\u64cd\u4f5c\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-weSlCGpKeq\">\u7e3d\u7d50<\/h2>\n<p>\u5728C\u8a9e\u8a00\u4e2d\u522a\u9664\u6578\u64da\u5eab\u7528\u6236\u4fe1\u606f\u7684\u904e\u7a0b\u76f8\u5c0d\u7c21\u55ae\uff0c\u4e3b\u8981\u5305\u62ec\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5\u3001\u6e96\u5099\u548c\u57f7\u884cSQL\u522a\u9664\u8a9e\u53e5\u4ee5\u53ca\u95dc\u9589\u9023\u63a5\u3002\u901a\u904e\u6b63\u78ba\u7684\u7de8\u78bc\u548c\u826f\u597d\u7684\u6578\u64da\u7ba1\u7406\u5be6\u8e10\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u7528\u6236\u4fe1\u606f\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u522a\u9664\u6578\u64da\u5eab\u7528\u6236\u4fe1\u606f\uff0c\u638c\u63e1SQL\u8a9e\u53e5\u548c\u9023\u63a5\u6578\u64da\u5eab\u7684\u57fa\u672c\u64cd\u4f5c\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-60217","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60217","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=60217"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60217\/revisions"}],"predecessor-version":[{"id":60218,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60217\/revisions\/60218"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}