{"id":60209,"date":"2024-10-13T00:57:27","date_gmt":"2024-10-12T16:57:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60209\/"},"modified":"2024-10-13T00:57:27","modified_gmt":"2024-10-12T16:57:27","slug":"c%e8%aa%9e%e8%a8%80%e4%b8%ad%e5%a6%82%e4%bd%95%e7%b7%a8%e5%af%ab%e9%80%a3%e6%8e%a5sql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e4%bb%a3%e7%a2%bc-c%e6%80%8e%e9%ba%bc%e9%80%a3%e6%8e%a5sql%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60209\/","title":{"rendered":"C\u8a9e\u8a00\u4e2d\u5982\u4f55\u7de8\u5beb\u9023\u63a5SQL\u6578\u64da\u5eab\u7684\u4ee3\u78bc (c\u600e\u9ebc\u9023\u63a5sql\u6578\u64da\u5eab\u4ee3\u78bc)"},"content":{"rendered":"

C\u8a9e\u8a00\u4e2d\u5982\u4f55\u7de8\u5beb\u9023\u63a5SQL\u6578\u64da\u5eab\u7684\u4ee3\u78bc<\/h1>\n

\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\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\u4ecd\u7136\u53ef\u4ee5\u901a\u904e\u9069\u7576\u7684\u5eab\u4f86\u9023\u63a5\u548c\u64cd\u4f5cSQL\u6578\u64da\u5eab\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u7de8\u5beb\u9023\u63a5SQL\u6578\u64da\u5eab\u7684\u4ee3\u78bc\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u3002<\/p>\n

1. \u78ba\u5b9a\u6578\u64da\u5eab\u985e\u578b<\/h2>\n

\u5728\u958b\u59cb\u7de8\u5beb\u4ee3\u78bc\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u78ba\u5b9a\u8981\u9023\u63a5\u7684\u6578\u64da\u5eab\u985e\u578b\u3002\u5e38\u898b\u7684SQL\u6578\u64da\u5eab\u5305\u62ecMySQL\u3001PostgreSQL\u548cSQLite\u7b49\u3002\u6bcf\u7a2e\u6578\u64da\u5eab\u90fd\u6709\u5176\u7279\u5b9a\u7684API\u548c\u5eab\uff0c\u56e0\u6b64\u5728\u7de8\u5beb\u4ee3\u78bc\u6642\u9700\u8981\u6839\u64da\u6240\u9078\u64c7\u7684\u6578\u64da\u5eab\u4f86\u9078\u64c7\u5408\u9069\u7684\u5eab\u3002<\/p>\n

2. \u5b89\u88dd\u76f8\u61c9\u7684\u5eab<\/h2>\n

\u4ee5MySQL\u70ba\u4f8b\uff0c\u60a8\u9700\u8981\u5b89\u88ddMySQL\u7684C API\u5eab\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u547d\u4ee4\u5728Linux\u7cfb\u7d71\u4e0a\u5b89\u88dd\uff1a<\/p>\n

sudo apt-get install libmysqlclient-dev<\/code><\/pre>\n
\u5b89\u88dd\u5b8c\u6210\u5f8c\uff0c\u60a8\u53ef\u4ee5\u5728C\u7a0b\u5e8f\u4e2d\u5305\u542b\u76f8\u61c9\u7684\u982d\u6587\u4ef6\uff1a<\/p>\n
#include <mysql\/mysql.h><\/code><\/pre>\n
3. \u7de8\u5beb\u9023\u63a5\u4ee3\u78bc<\/h2>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\uff1a<\/p>\n
\n#include <stdio.h>\n#include <stdlib.h>\n#include <mysql\/mysql.h>\n\nint main() {\n    MYSQL *conn;\n    conn = mysql_init(NULL);\n\n    \/\/ \u9023\u63a5\u5230\u6578\u64da\u5eab\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\n    \/\/ \u95dc\u9589\u9023\u63a5\n    mysql_close(conn);\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u521d\u59cb\u5316\u4e00\u500bMYSQL\u7d50\u69cb\u9ad4\uff0c\u7136\u5f8c\u4f7f\u7528mysql_real_connect\u51fd\u6578\u4f86\u9023\u63a5\u5230\u6578\u64da\u5eab\u3002\u8acb\u6839\u64da\u60a8\u7684\u6578\u64da\u5eab\u8a2d\u7f6e\u66ff\u63db\u201clocalhost\u201d\u3001\u201cuser\u201d\u3001\u201cpassword\u201d\u548c\u201cdatabase\u201d\u3002<\/p>\n
4. \u57f7\u884cSQL\u67e5\u8a62<\/h2>\n
\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528mysql_query\u51fd\u6578\u4f86\u57f7\u884cSQL\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u57f7\u884c\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n
\nconst char *query = \"SELECT * FROM your_table\";\nif (mysql_query(conn, query)) {\n    fprintf(stderr, \"SELECT * failed. Error: %sn\", mysql_error(conn));\n    return EXIT_FAILURE;\n}\n\nMYSQL_RES *result = mysql_store_result(conn);\nif (result == NULL) {\n    fprintf(stderr, \"mysql_store_result() failed. Error: %sn\", mysql_error(conn));\n    return EXIT_FAILURE;\n}\n\n\/\/ \u8655\u7406\u7d50\u679c\nMYSQL_ROW row;\nwhile ((row = mysql_fetch_row(result))) {\n    printf(\"%sn\", row[0]); \/\/ \u5047\u8a2d\u7b2c\u4e00\u5217\u662f\u60a8\u60f3\u8981\u7684\u6578\u64da\n}\n\nmysql_free_result(result);\n<\/code><\/pre>\n
5. \u932f\u8aa4\u8655\u7406<\/h2>\n
\u5728\u7de8\u5beb\u6578\u64da\u5eab\u64cd\u4f5c\u4ee3\u78bc\u6642\uff0c\u932f\u8aa4\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4f7f\u7528mysql_error\u51fd\u6578\u53ef\u4ee5\u7372\u53d6\u6700\u8fd1\u4e00\u6b21\u64cd\u4f5c\u7684\u932f\u8aa4\u4fe1\u606f\uff0c\u9019\u5c0d\u65bc\u8abf\u8a66\u975e\u5e38\u6709\u5e6b\u52a9\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728C\u8a9e\u8a00\u4e2d\u9023\u63a5SQL\u6578\u64da\u5eab\u4e26\u4e0d\u8907\u96dc\uff0c\u53ea\u9700\u5b89\u88dd\u76f8\u61c9\u7684\u5eab\uff0c\u7de8\u5beb\u9023\u63a5\u4ee3\u78bc\uff0c\u4e26\u57f7\u884cSQL\u67e5\u8a62\u5373\u53ef\u3002\u7121\u8ad6\u60a8\u662f\u958b\u767c\u5c0f\u578b\u61c9\u7528\u9084\u662f\u5927\u578b\u7cfb\u7d71\uff0c\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u6280\u80fd\u90fd\u5c07\u5c0d\u60a8\u7684\u958b\u767c\u5de5\u4f5c\u5927\u6709\u88e8\u76ca\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684\u61c9\u7528\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u670d\u52d9\uff0c\u63d0\u4f9b\u9ad8\u6548\u7684 \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u548c\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u7de8\u5beb\u4ee3\u78bc\u4ee5\u9023\u63a5SQL\u6578\u64da\u5eab\uff0c\u638c\u63e1\u57fa\u672c\u6b65\u9a5f\u548c\u793a\u4f8b\uff0c\u8f15\u9b06\u5be6\u73fe\u6578\u64da\u5eab\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-60209","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60209","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=60209"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60209\/revisions"}],"predecessor-version":[{"id":60210,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60209\/revisions\/60210"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}