要在Android Room中插入复杂对象自引用表，可以按照以下步骤进行：

1. 创建实体类：

@Entity(tableName = "complex_table")
data class ComplexObject(
    @PrimaryKey val id: Int,
    val name: String,
    val parentId: Int?
)

2. 创建DAO接口：

@Dao
interface ComplexObjectDao {
    @Insert
    suspend fun insert(complexObject: ComplexObject)

    @Query("SELECT * FROM complex_table WHERE parentId = :parentId")
    suspend fun getChildObjects(parentId: Int): List
}

3. 创建数据库：

@Database(entities = [ComplexObject::class], version = 1)
abstract class AppDatabase : RoomDatabase() {
    abstract fun complexObjectDao(): ComplexObjectDao

    companion object {
        @Volatile
        private var instance: AppDatabase? = null

        fun getInstance(context: Context): AppDatabase {
            return instance ?: synchronized(this) {
                instance ?: buildDatabase(context).also { instance = it }
            }
        }

        private fun buildDatabase(context: Context): AppDatabase {
            return Room.databaseBuilder(context, AppDatabase::class.java, "my-database")
                .build()
        }
    }
}

4. 在主线程或使用协程的异步任务中插入和查询数据：

val complexObjectDao = AppDatabase.getInstance(context).complexObjectDao()

// 插入数据
val parentObject = ComplexObject(1, "Parent", null)
val childObject = ComplexObject(2, "Child", parentObject.id)
runBlocking {
    complexObjectDao.insert(parentObject)
    complexObjectDao.insert(childObject)
}

// 查询数据
runBlocking {
    val childObjects = complexObjectDao.getChildObjects(parentObject.id)
    childObjects.forEach {
        Log.d("TAG", "Child Object - id: ${it.id}, name: ${it.name}, parentId: ${it.parentId}") 
    }
}

通过以上步骤，我们可以在Android Room中成功插入复杂对象自引用表，并进行查询操作。