1、如果想把某个自增列的序号归零，只需要修改 sqlite_sequence表就可以了。
delete from TableName;  //清空数据
update sqlite_sequence SET seq =0 where name ='TableName';//自增长ID为0

2、要想将所有表的自增列都归零，直接清空sqlite_sequence表就可以了：
DELETE FROM sqlite_sequence;