CREATE TABLE chat_messages (
id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
created_at INTEGER NOT NULL,
msg_id TEXT NOT NULL,
room_id TEXT,
room_name TEXT,
room_avatar TEXT,
talker_id TEXT NOT NULL,
talker_name TEXT,
talker_avatar TEXT,
content TEXT,
msg_type INTEGER,
url_title TEXT,
url_desc TEXT,
url_link TEXT,
url_thumb TEXT
);