mlisting

 1create table request (
 2       token TEXT NOT NULL,
 3       list TEXT NOT NULL,
 4       owner_address TEXT NOT NULL,
 5       request_type TEXT NOT NULL,
 6
 7       create_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
 8       expire_at DATETIME NOT NULL,
 9       confirmed_at DATETIME DEFAULT NULL,
10       PRIMARY KEY (token)
11);