setName('tools:db:desc')
->setDescription('显示表结构信息')
->addArgument('table', null, '表名')
->addOption('show-index', null, Option::VALUE_NONE, '显示索引信息')
->addOption('connection', null, Option::VALUE_OPTIONAL, '指定数据库连接配置')
->addOption('help', 'h', Option::VALUE_NONE, '显示帮助信息');
}
protected function execute($input, $output)
{
if ($input->getOption('help')) {
$service = new ToolsDbServiceBase();
$service->showHelp('tools:db:desc', $output);
return;
}
$service = new ToolsDbServiceBase();
if (!$service->checkDebugMode($output)) {
return;
}
$connection = $service->getDbConnection($input);
$service->setConnection($connection);
$tableName = $input->getArgument('table');
if (empty($tableName)) {
$output->error('请提供表名');
return;
}
$fullTableName = $service->getFullTableName($tableName);
$showIndex = $input->getOption('show-index');
try {
$output->writeln('');
$output->writeln('' . str_repeat('=', 60) . '');
$output->writeln('表结构：' . $fullTableName . '');
$output->writeln('' . str_repeat('=', 60) . '');
$output->writeln('');
$columns = Db::connect($connection)->query("SHOW FULL COLUMNS FROM `$fullTableName`");
if (empty($columns)) {
$output->writeln('表不存在或无字段');
$output->writeln('');
return;
}
$tableData = [];
foreach ($columns as $column) {
$tableData[] = [
'字段名' => $column['Field'],
'类型' => $column['Type'],
'是否为空' => $column['Null'] === 'YES' ? '是' : '否',
'键' => $column['Key'],
'默认值' => $column['Default'] ?? 'NULL',
'额外' => $column['Extra'] ?? '',
'注释' => $column['Comment'] ?? '',
];
}
$service->formatTableOutput($tableData, $output);
if ($showIndex) {
$output->writeln('');
$output->writeln('' . str_repeat('-', 60) . '');
$output->writeln('索引信息');
$output->writeln('' . str_repeat('-', 60) . '');
$output->writeln('');
$indexes = Db::connect($connection)->query("SHOW INDEX FROM `$fullTableName`");
if (!empty($indexes)) {
$indexData = [];
foreach ($indexes as $index) {
$indexData[] = [
'索引名' => $index['Key_name'],
'列名' => $index['Column_name'],
'唯一' => $index['Non_unique'] == 0 ? '是' : '否',
'索引类型' => $index['Index_type'],
'顺序' => $index['Seq_in_index'],
];
}
$service->formatTableOutput($indexData, $output);
} else {
$output->writeln('无索引');
}
}
$output->writeln('');
$output->writeln('' . str_repeat('=', 60) . '');
$output->writeln('');
} catch (\Exception $e) {
$output->error('获取表结构失败：' . $e->getMessage());
return;
}
}
}