Parse multiple signed/unsigned keyword from ddl statement failed

CREATE TABLE recon_data_dependency ( 
id BIGINT UNSIGNED unsigned AUTO_INCREMENT NOT NULL COMMENT '自增 ID', 
table_name VARCHAR(100) DEFAULT '' NOT NULL COMMENT '依赖表名',
date VARCHAR(32) DEFAULT '' NOT NULL COMMENT '日期',
status TINYINT DEFAULT 1 NOT NULL COMMENT '依赖表状态，1-初始 2-同步中 3-同步失败 4-同步完成',
sync_offset BIGINT DEFAULT 0 NOT NULL COMMENT '同步偏移量',
ready_time BIGINT DEFAULT 0 NOT NULL COMMENT '依赖表就绪时间',
created_at DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL COMMENT '创建时间',  
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL COMMENT '更新时间', 
UNIQUE INDEX uniq_table_name_date (table_name, date), 
PRIMARY KEY(id))  COMMENT = '任务数据依赖表'