# 20. 數據庫文件導入 ## 安裝數據庫 在開發完成后，導出需要用到的數據表，保存插件所在文件夾根目錄，命名為`install.sql`，在安裝的時候導入數據庫表。 你需要把表的前綴替換成 `@prefix@`，如下所示 ``` <pre class="calibre16">``` CREATE TABLE IF NOT EXISTS `@prefix@tablename` <span class="token1">(</span> <span class="token1">.</span><span class="token1">.</span><span class="token1">.</span><span class="token1">.</span><span class="token1">.</span> <span class="token1">)</span> ENGINE<span class="token">=</span>InnoDB DEFAULT CHARSET<span class="token">=</span>utf8mb4<span class="token1">;</span> ``` ``` - 手動導入方式 ``` <pre class="calibre16">``` <span class="token5">// 文件絕對路徑</span> $sql <span class="token">=</span> $this<span class="token">-</span><span class="token">></span>addon_path<span class="token1">.</span><span class="token4">'data'</span><span class="token1">.</span>DIRECTORY_SEPARATOR<span class="token1">.</span><span class="token4">'install.sql'</span><span class="token1">;</span> <span class="token5">// 寫入數據庫</span> <span class="token6">create_sql</span><span class="token1">(</span>$sql<span class="token1">)</span><span class="token1">;</span> ``` ``` ## 升級數據庫 插件所在文件夾根目錄，命名為`upgrade.sql`，在更新的時候會執行該文件。 同樣你需要把表的前綴替換成 `@prefix@` ## 演示數據數據庫文件 插件根目錄命名為：`demodata.sql`，在安裝的時候用戶勾選演示數據，即可導入演示數據。 數據庫里面的表前綴使用`@prefix@` 代替，如下 ``` <pre class="calibre16">``` insert into `@prefix@archives` values <span class="token1">(</span><span class="token3">75</span><span class="token1">,</span><span class="token3">20</span><span class="token1">,</span><span class="token3">1</span><span class="token1">,</span><span class="token3">2</span><span class="token1">,</span><span class="token4">'測試'</span><span class="token1">,</span><span class="token4">''</span><span class="token1">,</span><span class="token4">''</span><span class="token1">,</span><span class="token4">''</span><span class="token1">,</span><span class="token4">''</span><span class="token1">,</span><span class="token4">''</span><span class="token1">,</span><span class="token4">'show.html'</span><span class="token1">,</span><span class="token3">1637382374</span><span class="token1">,</span><span class="token3">1637382417</span><span class="token1">,</span><span class="token3">1637382417</span><span class="token1">,</span>NULL<span class="token1">,</span><span class="token3">0</span><span class="token1">,</span><span class="token4">'default'</span><span class="token1">,</span><span class="token4">''</span><span class="token1">,</span><span class="token3">0</span><span class="token1">,</span><span class="token4">'zh-cn'</span><span class="token1">,</span><span class="token4">'normal'</span><span class="token1">)</span><span class="token1">;</span> ``` ``` 效果