{"id":60203,"date":"2024-10-13T00:54:19","date_gmt":"2024-10-12T16:54:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60203\/"},"modified":"2024-10-13T00:54:19","modified_gmt":"2024-10-12T16:54:19","slug":"c%e8%aa%9e%e8%a8%80%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%ef%bc%9a%e5%85%a5%e9%96%80%e6%95%99%e7%a8%8b-c%e6%95%b8%e6%93%9a%e5%ba%ab%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60203\/","title":{"rendered":"C\u8a9e\u8a00\u4e2d\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff1a\u5165\u9580\u6559\u7a0b (c\u6578\u64da\u5eab\u6559\u7a0b)"},"content":{"rendered":"

C\u8a9e\u8a00\u4e2d\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff1a\u5165\u9580\u6559\u7a0b (C\u6578\u64da\u5eab\u6559\u7a0b)<\/h1>\n

\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\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\u80fd\u5920\u6709\u6548\u5730\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u9032\u884c\u57fa\u672c\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u5e6b\u52a9\u521d\u5b78\u8005\u5feb\u901f\u4e0a\u624b\u3002<\/p>\n

1. \u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u6709\u7d44\u7e54\u7684\u6578\u64da\u96c6\u5408\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u548c\u7ba1\u7406\u5927\u91cf\u4fe1\u606f\u3002\u5e38\u898b\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u5305\u62ecMySQL\u3001PostgreSQL\u548cSQLite\u7b49\u3002\u9019\u4e9b\u6578\u64da\u5eab\u7cfb\u7d71\u63d0\u4f9b\u4e86API\uff0c\u5141\u8a31\u958b\u767c\u8005\u4f7f\u7528\u4e0d\u540c\u7684\u7de8\u7a0b\u8a9e\u8a00\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002<\/p>\n

2. C\u8a9e\u8a00\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5<\/h2>\n

\u5728C\u8a9e\u8a00\u4e2d\uff0c\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u901a\u5e38\u9700\u8981\u4f7f\u7528\u7279\u5b9a\u7684\u5eab\u3002\u4f8b\u5982\uff0c\u5c0d\u65bcMySQL\u6578\u64da\u5eab\uff0c\u53ef\u4ee5\u4f7f\u7528MySQL C API\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n

\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    \/\/ \u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\n\n    mysql_close(conn);\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n
3. \u57f7\u884cSQL\u67e5\u8a62<\/h2>\n
\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u5c31\u53ef\u4ee5\u57f7\u884cSQL\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u57f7\u884c\u4e00\u500b\u7c21\u55ae\u7684SELECT\u67e5\u8a62\uff1a<\/p>\n
\nMYSQL_RES *res;\nMYSQL_ROW row;\n\nif (mysql_query(conn, \"SELECT * FROM table_name\")) {\n    fprintf(stderr, \"SELECT * failed. Error: %sn\", mysql_error(conn));\n    return EXIT_FAILURE;\n}\n\nres = mysql_store_result(conn);\nif (res == NULL) {\n    fprintf(stderr, \"mysql_store_result() failed. Error: %sn\", mysql_error(conn));\n    return EXIT_FAILURE;\n}\n\nwhile ((row = mysql_fetch_row(res)) != NULL) {\n    printf(\"%sn\", row[0]); \/\/ \u5047\u8a2d\u7b2c\u4e00\u5217\u662f\u5b57\u7b26\u4e32\n}\n\nmysql_free_result(res);\n<\/code><\/pre>\n
4. \u63d2\u5165\u6578\u64da<\/h2>\n
\u9664\u4e86\u67e5\u8a62\u6578\u64da\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528INSERT\u8a9e\u53e5\u5c07\u6578\u64da\u63d2\u5165\u5230\u6578\u64da\u5eab\u4e2d\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n
\nif (mysql_query(conn, \"INSERT INTO table_name (column1, column2) VALUES ('value1', 'value2')\")) {\n    fprintf(stderr, \"INSERT failed. Error: %sn\", mysql_error(conn));\n    return EXIT_FAILURE;\n}\n<\/code><\/pre>\n
5. \u932f\u8aa4\u8655\u7406<\/h2>\n
\u5728\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u932f\u8aa4\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002C\u8a9e\u8a00\u63d0\u4f9b\u4e86mysql_error()\u51fd\u6578\u4f86\u7372\u53d6\u6700\u8fd1\u4e00\u6b21\u64cd\u4f5c\u7684\u932f\u8aa4\u4fe1\u606f\u3002\u9019\u6709\u52a9\u65bc\u958b\u767c\u8005\u5feb\u901f\u5b9a\u4f4d\u554f\u984c\u3002<\/p>\n
6. \u7e3d\u7d50<\/h2>\n
\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u9032\u884c\u57fa\u672c\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u5305\u62ec\u9023\u63a5\u6578\u64da\u5eab\u3001\u57f7\u884c\u67e5\u8a62\u548c\u63d2\u5165\u6578\u64da\u3002\u96d6\u7136C\u8a9e\u8a00\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u76f8\u5c0d\u8f03\u70ba\u5e95\u5c64\uff0c\u4f46\u901a\u904e\u4f7f\u7528\u76f8\u61c9\u7684API\uff0c\u958b\u767c\u8005\u4ecd\u7136\u53ef\u4ee5\u9ad8\u6548\u5730\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u66f4\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u548c\u7ba1\u7406\u6709\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u7a69\u5b9a\u7684\u6027\u80fd\u548c\u66f4\u9ad8\u7684\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22C\u8a9e\u8a00\u4e2d\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u5f9e\u57fa\u672c\u6982\u5ff5\u5230\u5be6\u7528\u7bc4\u4f8b\uff0c\u5e6b\u52a9\u4f60\u5feb\u901f\u638c\u63e1C\u6578\u64da\u5eab\u7de8\u7a0b\u6280\u5de7\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-60203","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60203","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=60203"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60203\/revisions"}],"predecessor-version":[{"id":60204,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60203\/revisions\/60204"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}