Android SQLite在一个数据库中创建两个表。不是在同一时间

public class MyDatabaseHelper extends SQLiteOpenHelper {
    private static final String DATABASE_NAME = "mydatabase.db";
    private static final int DATABASE_VERSION = 1;

    // 定义第一个表的结构
    private static final String TABLE1_NAME = "table1";
    private static final String TABLE1_COLUMN1 = "column1";
    private static final String TABLE1_COLUMN2 = "column2";

    // 定义第二个表的结构
    private static final String TABLE2_NAME = "table2";
    private static final String TABLE2_COLUMN1 = "column1";
    private static final String TABLE2_COLUMN2 = "column2";

    public MyDatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        // 创建第一个表
        String createTable1Query = "CREATE TABLE " + TABLE1_NAME + " (" +
                TABLE1_COLUMN1 + " INTEGER PRIMARY KEY, " +
                TABLE1_COLUMN2 + " TEXT)";
        db.execSQL(createTable1Query);

        // 创建第二个表
        String createTable2Query = "CREATE TABLE " + TABLE2_NAME + " (" +
                TABLE2_COLUMN1 + " INTEGER PRIMARY KEY, " +
                TABLE2_COLUMN2 + " TEXT)";
        db.execSQL(createTable2Query);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // 在数据库版本更新时执行操作
    }
}