插入表数据
Insert语句:insert (low_priority/delayed/high_priority) (ignore) (into) *** values/value *** (on duplicate key update ***=***,…);
Insert (…) (…) (into) *** set ***=***/default (on duplicate key update…);
Insert (…) (…) (into) *** select… (on duplicate key update…);
Replace语句:在插入数据前将表中与待插入的新纪录相冲突的旧记录删除