{"id":59693,"date":"2024-10-13T00:01:51","date_gmt":"2024-10-12T16:01:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/59693\/"},"modified":"2024-10-13T00:01:51","modified_gmt":"2024-10-12T16:01:51","slug":"c%e8%aa%9e%e8%a8%80%e6%93%8d%e4%bd%9c%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9a%e9%80%a3%e6%8e%a5%e3%80%81%e6%b7%bb%e5%8a%a0%e3%80%81%e4%bf%ae%e6%94%b9%e3%80%81%e5%88%aa%e9%99%a4-c%e9%80%a3%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/59693\/","title":{"rendered":"C\u8a9e\u8a00\u64cd\u4f5c\u6578\u64da\u5eab\uff1a\u9023\u63a5\u3001\u6dfb\u52a0\u3001\u4fee\u6539\u3001\u522a\u9664 (c\u9023\u63a5\u6578\u64da\u5eab\u6dfb\u52a0\u4fee\u6539\u522a\u9664)"},"content":{"rendered":"

C\u8a9e\u8a00\u64cd\u4f5c\u6578\u64da\u5eab\uff1a\u9023\u63a5\u3001\u6dfb\u52a0\u3001\u4fee\u6539\u3001\u522a\u9664<\/h1>\n

\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002C\u8a9e\u8a00\u4f5c\u70ba\u4e00\u7a2e\u5e95\u5c64\u7de8\u7a0b\u8a9e\u8a00\uff0c\u96d6\u7136\u4e0d\u5982\u9ad8\u7d1a\u8a9e\u8a00\u90a3\u6a23\u76f4\u89c0\uff0c\u4f46\u5b83\u4ecd\u7136\u53ef\u4ee5\u6709\u6548\u5730\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u9023\u63a5\u6578\u64da\u5eab\uff0c\u4e26\u57f7\u884c\u6dfb\u52a0\u3001\u4fee\u6539\u548c\u522a\u9664\u64cd\u4f5c\u3002<\/p>\n

1. \u9023\u63a5\u6578\u64da\u5eab<\/h2>\n

\u5728C\u8a9e\u8a00\u4e2d\uff0c\u9023\u63a5\u6578\u64da\u5eab\u901a\u5e38\u9700\u8981\u4f7f\u7528\u7279\u5b9a\u7684\u6578\u64da\u5eabAPI\u3002\u4ee5MySQL\u70ba\u4f8b\uff0c\u6211\u5011\u9700\u8981\u4f7f\u7528MySQL C API\u4f86\u9032\u884c\u9023\u63a5\u3002\u9996\u5148\uff0c\u78ba\u4fdd\u5df2\u5b89\u88ddMySQL\u958b\u767c\u5eab\uff0c\u7136\u5f8c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u9023\u63a5\u6578\u64da\u5eab\uff1a<\/p>\n

\n#include \n#include \n#include \n\nint main() {\n    MYSQL *conn;\n    conn = mysql_init(NULL);\n\n    if (conn == NULL) {\n        fprintf(stderr, \"mysql_init() failedn\");\n        return EXIT_FAILURE;\n    }\n\n    if (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\n    printf(\"\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff01n\");\n    mysql_close(conn);\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n
2. \u6dfb\u52a0\u6578\u64da<\/h2>\n
\u9023\u63a5\u5230\u6578\u64da\u5eab\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u57f7\u884cSQL\u8a9e\u53e5\u4f86\u6dfb\u52a0\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n
\nconst char *query = \"INSERT INTO users (name, age) VALUES ('Alice', 30)\";\nif (mysql_query(conn, query)) {\n    fprintf(stderr, \"INSERT failed. Error: %sn\", mysql_error(conn));\n}\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86mysql_query\u51fd\u6578\u4f86\u57f7\u884c\u63d2\u5165\u64cd\u4f5c\u3002\u5982\u679c\u64cd\u4f5c\u5931\u6557\uff0c\u5247\u6703\u8f38\u51fa\u932f\u8aa4\u4fe1\u606f\u3002<\/p>\n
3. \u4fee\u6539\u6578\u64da<\/h2>\n
\u4fee\u6539\u6578\u64da\u7684\u904e\u7a0b\u8207\u6dfb\u52a0\u6578\u64da\u985e\u4f3c\uff0c\u53ea\u9700\u4f7f\u7528UPDATE\u8a9e\u53e5\u5373\u53ef\u3002\u4ee5\u4e0b\u662f\u4fee\u6539\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n
\nconst char *update_query = \"UPDATE users SET age = 31 WHERE name = 'Alice'\";\nif (mysql_query(conn, update_query)) {\n    fprintf(stderr, \"UPDATE failed. Error: %sn\", mysql_error(conn));\n}\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u7528\u6236Alice\u7684\u5e74\u9f61\u66f4\u65b0\u70ba31\u6b72\u3002<\/p>\n
4. \u522a\u9664\u6578\u64da<\/h2>\n
\u522a\u9664\u6578\u64da\u540c\u6a23\u4f7f\u7528DELETE\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u522a\u9664\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n
\nconst char *delete_query = \"DELETE FROM users WHERE name = 'Alice'\";\nif (mysql_query(conn, delete_query)) {\n    fprintf(stderr, \"DELETE failed. Error: %sn\", mysql_error(conn));\n}\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u522a\u9664\u540d\u70baAlice\u7684\u7528\u6236\u3002<\/p>\n
5. \u7e3d\u7d50<\/h2>\n
\u901a\u904e\u4ee5\u4e0a\u793a\u4f8b\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u8207\u6578\u64da\u5eab\u9032\u884c\u57fa\u672c\u7684\u64cd\u4f5c\uff0c\u5305\u62ec\u9023\u63a5\u3001\u6dfb\u52a0\u3001\u4fee\u6539\u548c\u522a\u9664\u6578\u64da\u3002\u96d6\u7136C\u8a9e\u8a00\u7684\u8a9e\u6cd5\u76f8\u5c0d\u8f03\u4f4e\u7d1a\uff0c\u4f46\u5176\u9748\u6d3b\u6027\u548c\u6027\u80fd\u4f7f\u5176\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u4ecd\u7136\u5177\u6709\u91cd\u8981\u5730\u4f4d\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684\u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 \u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u9023\u63a5\u6578\u64da\u5eab\uff0c\u4e26\u9032\u884c\u6578\u64da\u7684\u6dfb\u52a0\u3001\u4fee\u6539\u548c\u522a\u9664\u64cd\u4f5c\uff0c\u63d0\u5347\u4f60\u7684\u7de8\u7a0b\u6280\u80fd\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-59693","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59693","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=59693"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59693\/revisions"}],"predecessor-version":[{"id":59694,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59693\/revisions\/59694"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=59693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=59693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=59693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}