{"id":59651,"date":"2024-10-12T23:43:27","date_gmt":"2024-10-12T15:43:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/59651\/"},"modified":"2024-10-12T23:43:27","modified_gmt":"2024-10-12T15:43:27","slug":"c%e6%93%8d%e4%bd%9c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%a5%9e%e5%99%a8%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ba%ab%ef%bc%88database-library%ef%bc%89-c%e6%93%8d%e4%bd%9c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/59651\/","title":{"rendered":"C\u64cd\u4f5c\u6578\u64da\u5eab\u795e\u5668\uff1a\u6578\u64da\u5eab\u5eab\uff08Database Library\uff09 (c\u64cd\u4f5c\u6578\u64da\u5eab\u7684\u5eab)"},"content":{"rendered":"<h1 id=\"c%e6%93%8d%e4%bd%9c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%a5%9e%e5%99%a8%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ba%ab%ef%bc%88database-library%ef%bc%89-LzWYUXimDl\">C\u64cd\u4f5c\u6578\u64da\u5eab\u795e\u5668\uff1a\u6578\u64da\u5eab\u5eab\uff08Database Library\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u5c0d\u65bc\u4f7f\u7528C\u8a9e\u8a00\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u5eab\uff08Database Library\uff09\u53ef\u4ee5\u5927\u5927\u7c21\u5316\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u904e\u7a0b\u3002\u672c\u6587\u5c07\u63a2\u8a0eC\u8a9e\u8a00\u4e2d\u5e7e\u500b\u6d41\u884c\u7684\u6578\u64da\u5eab\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u5efa\u8b70\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87c%e8%aa%9e%e8%a8%80%e6%93%8d%e4%bd%9c%e6%95%b8%e6%93%9a%e5%ba%ab-LzWYUXimDl\">\u70ba\u4ec0\u9ebc\u9078\u64c7C\u8a9e\u8a00\u64cd\u4f5c\u6578\u64da\u5eab<\/h2>\n<p>C\u8a9e\u8a00\u4ee5\u5176\u9ad8\u6548\u6027\u548c\u9748\u6d3b\u6027\u800c\u805e\u540d\uff0c\u7279\u5225\u9069\u5408\u9700\u8981\u9ad8\u6027\u80fd\u7684\u61c9\u7528\u7a0b\u5e8f\u3002\u8a31\u591a\u5d4c\u5165\u5f0f\u7cfb\u7d71\u548c\u64cd\u4f5c\u7cfb\u7d71\u90fd\u662f\u7528C\u8a9e\u8a00\u7de8\u5beb\u7684\uff0c\u56e0\u6b64\u5728\u9019\u4e9b\u74b0\u5883\u4e2d\u64cd\u4f5c\u6578\u64da\u5eab\u6642\uff0c\u4f7f\u7528C\u8a9e\u8a00\u7684\u6578\u64da\u5eab\u5eab\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u63a7\u5236\u3002<\/p>\n<h2 id=\"%e6%b5%81%e8%a1%8c%e7%9a%84c%e8%aa%9e%e8%a8%80%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ba%ab-LzWYUXimDl\">\u6d41\u884c\u7684C\u8a9e\u8a00\u6578\u64da\u5eab\u5eab<\/h2>\n<h3 id=\"1-sqlite-LzWYUXimDl\">1. SQLite<\/h3>\n<p>SQLite\u662f\u4e00\u500b\u8f15\u91cf\u7d1a\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u5b83\u7684\u7279\u9ede\u662f\u7121\u9700\u5b89\u88dd\u548c\u914d\u7f6e\uff0c\u4e26\u4e14\u6240\u6709\u6578\u64da\u90fd\u5b58\u5132\u5728\u4e00\u500b\u55ae\u4e00\u7684\u6587\u4ef6\u4e2d\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528SQLite\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;stdio.h&gt;\n#include &lt;sqlite3.h&gt;\n\nint main() {\n    sqlite3 *db;\n    char *errMsg = 0;\n\n    \/\/ \u6253\u958b\u6578\u64da\u5eab\n    if (sqlite3_open(\"test.db\", &amp;db)) {\n        fprintf(stderr, \"\u7121\u6cd5\u6253\u958b\u6578\u64da\u5eab: %sn\", sqlite3_errmsg(db));\n        return 1;\n    }\n\n    \/\/ \u57f7\u884cSQL\u8a9e\u53e5\n    const char *sql = \"CREATE TABLE IF NOT EXISTS Users (ID INT, Name TEXT);\";\n    if (sqlite3_exec(db, sql, 0, 0, &amp;errMsg) != SQLITE_OK) {\n        fprintf(stderr, \"SQL\u932f\u8aa4: %sn\", errMsg);\n        sqlite3_free(errMsg);\n    }\n\n    \/\/ \u95dc\u9589\u6578\u64da\u5eab\n    sqlite3_close(db);\n    return 0;\n}\n<\/code><\/pre>\n<h3 id=\"2-mysql-c-api-LzWYUXimDl\">2. MySQL C API<\/h3>\n<p>MySQL\u662f\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86C API\u4f86\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u4f7f\u7528MySQL C API\u53ef\u4ee5\u76f4\u63a5\u8207MySQL\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528MySQL C API\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;mysql\/mysql.h&gt;\n\nint main() {\n    MYSQL *conn;\n    conn = mysql_init(NULL);\n\n    \/\/ \u9023\u63a5\u5230\u6578\u64da\u5eab\n    if (mysql_real_connect(conn, \"localhost\", \"user\", \"password\", \"testdb\", 0, NULL, 0) == NULL) {\n        fprintf(stderr, \"mysql_real_connect() \u932f\u8aa4: %sn\", mysql_error(conn));\n        return 1;\n    }\n\n    \/\/ \u57f7\u884c\u67e5\u8a62\n    if (mysql_query(conn, \"SELECT * FROM Users\")) {\n        fprintf(stderr, \"SELECT \u932f\u8aa4: %sn\", mysql_error(conn));\n    }\n\n    \/\/ \u95dc\u9589\u9023\u63a5\n    mysql_close(conn);\n    return 0;\n}\n<\/code><\/pre>\n<h3 id=\"3-postgresql-c-api-LzWYUXimDl\">3. PostgreSQL C API<\/h3>\n<p>PostgreSQL\u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86C\u8a9e\u8a00\u7684API\u4f86\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PostgreSQL C API\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;stdio.h&gt;\n#include &lt;libpq-fe.h&gt;\n\nint main() {\n    PGconn *conn = PQconnectdb(\"user=user dbname=testdb\");\n\n    if (PQstatus(conn) != CONNECTION_OK) {\n        fprintf(stderr, \"\u9023\u63a5\u5931\u6557: %s\", PQerrorMessage(conn));\n        PQfinish(conn);\n        return 1;\n    }\n\n    \/\/ \u57f7\u884c\u67e5\u8a62\n    PGresult *res = PQexec(conn, \"SELECT * FROM Users\");\n    if (PQresultStatus(res) != PGRES_TUPLES_OK) {\n        fprintf(stderr, \"\u67e5\u8a62\u5931\u6557: %s\", PQerrorMessage(conn));\n    }\n\n    \/\/ \u91cb\u653e\u8cc7\u6e90\n    PQclear(res);\n    PQfinish(conn);\n    return 0;\n}\n<\/code><\/pre>\n<h2 id=\"%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ba%ab-LzWYUXimDl\">\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u5eab<\/h2>\n<p>\u5728\u9078\u64c7C\u8a9e\u8a00\u7684\u6578\u64da\u5eab\u5eab\u6642\uff0c\u958b\u767c\u8005\u61c9\u8003\u616e\u4ee5\u4e0b\u5e7e\u500b\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\uff1a<\/strong>\u4e0d\u540c\u7684\u6578\u64da\u5eab\u5eab\u5728\u6027\u80fd\u4e0a\u53ef\u80fd\u5b58\u5728\u5dee\u7570\uff0c\u6839\u64da\u61c9\u7528\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u5eab\u3002<\/li>\n<li><strong>\u6613\u7528\u6027\uff1a<\/strong>\u4e00\u4e9b\u5eab\u63d0\u4f9b\u4e86\u66f4\u7c21\u55ae\u7684API\uff0c\u9069\u5408\u5feb\u901f\u958b\u767c\u3002<\/li>\n<li><strong>\u793e\u5340\u652f\u6301\uff1a<\/strong>\u9078\u64c7\u6709\u826f\u597d\u6587\u6a94\u548c\u6d3b\u8e8d\u793e\u5340\u652f\u6301\u7684\u5eab\uff0c\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u89e3\u6c7a\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-LzWYUXimDl\">\u7e3d\u7d50<\/h2>\n<p>\u5728C\u8a9e\u8a00\u4e2d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u5eab\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u958b\u767c\u6548\u7387\u548c\u61c9\u7528\u6027\u80fd\u3002\u7121\u8ad6\u662f\u4f7f\u7528SQLite\u3001MySQL C API\u9084\u662fPostgreSQL C API\uff0c\u958b\u767c\u8005\u90fd\u80fd\u5920\u9748\u6d3b\u5730\u64cd\u4f5c\u6578\u64da\u5eab\uff0c\u6eff\u8db3\u5404\u7a2e\u9700\u6c42\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684\u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u4e0d\u540c\u7684\u9700\u6c42\u548c\u9810\u7b97\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22C\u64cd\u4f5c\u6578\u64da\u5eab\u795e\u5668\uff1a\u6578\u64da\u5eab\u5eab\uff0c\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\uff0c\u8f15\u9b06\u96c6\u6210\u8207\u4f7f\u7528\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-59651","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59651","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=59651"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59651\/revisions"}],"predecessor-version":[{"id":59652,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59651\/revisions\/59652"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=59651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=59651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=59651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}