对于表actor批量插入如下数据,如果数据已经存在，请忽略，不使用replace操作
CREATE TABLE IF NOT EXISTS actor (
actor_id smallint(5) NOT NULL PRIMARY KEY,
first_name varchar(45) NOT NULL,
last_name varchar(45) NOT NULL,
last_update timestamp NOT NULL DEFAULT (datetime('now','localtime')))
actor_id	first_name	last_name	last_update
'3'	'ED'	'CHASE'	'2006-02-15 12:34:33'

insert IGNORE into actor
values(3,'ED','CHASE','2006-02-15 12:34:33');