检查Android SQLite数据库中的特定列

SQLiteOpenHelper dbHelper = new SQLiteOpenHelper(context, dbName, null, dbVersion) {
    @Override
    public void onCreate(SQLiteDatabase db) {
        // 创建数据库表格
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // 升级数据库表格
    }
};

SQLiteDatabase db = dbHelper.getReadableDatabase();

String tableName = "your_table_name";
String columnName = "your_column_name";

String query = "SELECT " + columnName + " FROM " + tableName;
Cursor cursor = db.rawQuery(query, null);

if (cursor.moveToFirst()) {
    do {
        // 处理查询结果
        String columnValue = cursor.getString(cursor.getColumnIndex(columnName));
        // ...
    } while (cursor.moveToNext());
}

cursor.close();

db.close();