try
	{
		const int l_size = p_tt.getLeaves().size() * TTHValue::BYTES;
		const __int64 l_file_size = p_tt.getFileSize();
		sqlite3_transaction l_trans(m_flySQLiteDB);
		if (!m_ins_fly_hash_block.get())
			m_ins_fly_hash_block = auto_ptr<sqlite3_command>(new sqlite3_command(m_flySQLiteDB,
			                                                                     "insert or replace into fly_hash_block (tth_id,file_size,tiger_tree,block_size) values(?,?,?,?)"));
		sqlite3_command* l_sql = m_ins_fly_hash_block.get();
		l_sql->bind(1, l_tth_id);
		l_sql->bind(2, l_file_size);
		l_sql->bind(3, p_tt.getLeaves()[0].data,  l_file_size > MIN_BLOCK_SIZE ? l_size : 0, SQLITE_STATIC);
		l_sql->bind(4, p_tt.getBlockSize());
		l_sql->executenonquery();
		l_trans.commit();
		return l_tth_id;
	}
	catch (const database_error& e)
	{
		errorDB("SQLite - addTree: " + e.getError()); // TODO translate
	}

CREATE TABLE fly_hash_block(tth_id integer PRIMARY KEY NOT NULL,tiger_tree blob,file_size int64 not null,block_size int64)