{"id":60185,"date":"2024-10-13T00:45:16","date_gmt":"2024-10-12T16:45:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60185\/"},"modified":"2024-10-13T00:45:16","modified_gmt":"2024-10-12T16:45:16","slug":"c%e8%aa%9e%e8%a8%80%e4%bd%bf%e7%94%a8%e6%a1%8c%e9%9d%a2%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e7%ae%a1%e7%90%86-c%e6%a1%8c%e9%9d%a2%e9%80%a3%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60185\/","title":{"rendered":"C\u8a9e\u8a00\u4f7f\u7528\u684c\u9762\u9023\u63a5\u6578\u64da\u5eab\u5be6\u73fe\u6578\u64da\u7ba1\u7406 (c\u684c\u9762\u9023\u63a5\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 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id=\"%e6%a1%8c%e9%9d%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e9%81%b8%e6%93%87-GOjVCWQbxc\">\u684c\u9762\u6578\u64da\u5eab\u7684\u9078\u64c7<\/h2>\n<p>\u5728\u9078\u64c7\u684c\u9762\u6578\u64da\u5eab\u6642\uff0c\u5e38\u898b\u7684\u9078\u64c7\u5305\u62ecSQLite\u3001MySQL\u548cPostgreSQL\u7b49\u3002\u9019\u4e9b\u6578\u64da\u5eab\u5404\u6709\u7279\u9ede\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u684c\u9762\u6578\u64da\u5eab\u7684\u7c21\u4ecb\uff1a<\/p>\n<ul>\n<li><strong>SQLite\uff1a<\/strong>\u8f15\u91cf\u7d1a\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff0c\u9069\u5408\u5c0f\u578b\u61c9\u7528\u548c\u5d4c\u5165\u5f0f\u7cfb\u7d71\u3002<\/li>\n<li><strong>MySQL\uff1a<\/strong>\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u6578\u64da\u5eab\uff0c\u9069\u5408\u4e2d\u5927\u578b\u61c9\u7528\u3002<\/li>\n<li><strong>PostgreSQL\uff1a<\/strong>\u652f\u6301\u8907\u96dc\u67e5\u8a62\u548c\u6578\u64da\u985e\u578b\uff0c\u9069\u5408\u9700\u8981\u9ad8\u6027\u80fd\u7684\u61c9\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-GOjVCWQbxc\">\u9023\u63a5\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528C\u8a9e\u8a00\u9023\u63a5SQLite\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%ae%89%e8%a3%9dsqlite-GOjVCWQbxc\">1. \u5b89\u88ddSQLite<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u4fdd\u5df2\u5b89\u88ddSQLite\u5eab\u3002\u53ef\u4ee5\u5f9eSQLite\u7684\u5b98\u65b9\u7db2\u7ad9\u4e0b\u8f09\u4e26\u5b89\u88dd\u3002<\/p>\n<h3 id=\"2-%e5%8c%85%e5%90%ab%e5%bf%85%e8%a6%81%e7%9a%84%e9%a0%ad%e6%96%87%e4%bb%b6-GOjVCWQbxc\">2. \u5305\u542b\u5fc5\u8981\u7684\u982d\u6587\u4ef6<\/h3>\n<pre><code>#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;sqlite3.h&gt;\n<\/code><\/pre>\n<h3 id=\"3-%e6%89%93%e9%96%8b%e6%95%b8%e6%93%9a%e5%ba%ab-GOjVCWQbxc\">3. \u6253\u958b\u6578\u64da\u5eab<\/h3>\n<p>\u4f7f\u7528sqlite3_open\u51fd\u6578\u4f86\u6253\u958b\u6578\u64da\u5eab\u3002\u5982\u679c\u6578\u64da\u5eab\u4e0d\u5b58\u5728\uff0c\u5247\u6703\u81ea\u52d5\u5275\u5efa\u4e00\u500b\u65b0\u7684\u6578\u64da\u5eab\u3002<\/p>\n<pre><code>sqlite3 *db;\nint rc = sqlite3_open(\"test.db\", &amp;db);\nif (rc) {\n    fprintf(stderr, \"\u7121\u6cd5\u6253\u958b\u6578\u64da\u5eab: %sn\", sqlite3_errmsg(db));\n    return 0;\n}\n<\/code><\/pre>\n<h3 id=\"4-%e5%9f%b7%e8%a1%8csql%e8%aa%9e%e5%8f%a5-GOjVCWQbxc\">4. \u57f7\u884cSQL\u8a9e\u53e5<\/h3>\n<p>\u4f7f\u7528sqlite3_exec\u51fd\u6578\u4f86\u57f7\u884cSQL\u8a9e\u53e5\uff0c\u4f8b\u5982\u5275\u5efa\u8868\u3001\u63d2\u5165\u6578\u64da\u7b49\u3002<\/p>\n<pre><code>const char *sql = \"CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name TEXT);\";\nchar *errMsg = 0;\nrc = sqlite3_exec(db, sql, 0, 0, &amp;errMsg);\nif (rc != SQLITE_OK) {\n    fprintf(stderr, \"SQL\u932f\u8aa4: %sn\", errMsg);\n    sqlite3_free(errMsg);\n}\n<\/code><\/pre>\n<h3 id=\"5-%e9%97%9c%e9%96%89%e6%95%b8%e6%93%9a%e5%ba%ab-GOjVCWQbxc\">5. \u95dc\u9589\u6578\u64da\u5eab<\/h3>\n<p>\u5b8c\u6210\u64cd\u4f5c\u5f8c\uff0c\u4f7f\u7528sqlite3_close\u51fd\u6578\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\u3002<\/p>\n<pre><code>sqlite3_close(db);\n<\/code><\/pre>\n<h2 id=\"%e6%95%b8%e6%93%9a%e7%ae%a1%e7%90%86%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%93%8d%e4%bd%9c-GOjVCWQbxc\">\u6578\u64da\u7ba1\u7406\u7684\u57fa\u672c\u64cd\u4f5c<\/h2>\n<p>\u5728\u9023\u63a5\u6578\u64da\u5eab\u5f8c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9032\u884c\u5404\u7a2e\u6578\u64da\u7ba1\u7406\u64cd\u4f5c\uff0c\u5305\u62ec\u63d2\u5165\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684SQL\u64cd\u4f5c\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-GOjVCWQbxc\">\u63d2\u5165\u6578\u64da<\/h3>\n<pre><code>const char *insert_sql = \"INSERT INTO users (name) VALUES ('Alice');\";\nrc = sqlite3_exec(db, insert_sql, 0, 0, &amp;errMsg);\n<\/code><\/pre>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-GOjVCWQbxc\">\u67e5\u8a62\u6578\u64da<\/h3>\n<pre><code>const char *select_sql = \"SELECT * FROM users;\";\nsqlite3_stmt *stmt;\nsqlite3_prepare_v2(db, select_sql, -1, &amp;stmt, 0);\nwhile (sqlite3_step(stmt) == SQLITE_ROW) {\n    printf(\"ID: %d, Name: %sn\", sqlite3_column_int(stmt, 0), sqlite3_column_text(stmt, 1));\n}\nsqlite3_finalize(stmt);\n<\/code><\/pre>\n<h3 id=\"%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-GOjVCWQbxc\">\u66f4\u65b0\u6578\u64da<\/h3>\n<pre><code>const char *update_sql = \"UPDATE users SET name = 'Bob' WHERE id = 1;\";\nrc = sqlite3_exec(db, update_sql, 0, 0, &amp;errMsg);\n<\/code><\/pre>\n<h3 id=\"%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-GOjVCWQbxc\">\u522a\u9664\u6578\u64da<\/h3>\n<pre><code>const char *delete_sql = \"DELETE FROM users WHERE id = 1;\";\nrc = sqlite3_exec(db, delete_sql, 0, 0, &amp;errMsg);\n<\/code><\/pre>\n<h2 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href=\"https:\/\/server.hk\">VPS<\/a>\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u9023\u63a5\u684c\u9762\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u7ba1\u7406\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u6027\u80fd\u8207\u6578\u64da\u8655\u7406\u80fd\u529b\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-60185","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60185","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=60185"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60185\/revisions"}],"predecessor-version":[{"id":60186,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60185\/revisions\/60186"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}