日常记录，mysql insert select写法:
insert into table_a (audit_id,command_no,cid) select audit_id,command_no,id from spamcenter.table_b;
insert into table_a (audit_id,command_no,cid) select audit_id,command_no,id from spamcenter.table_b;
insert into table_a (audit_id,command_no,cid) select audit_id,command_no,id from spamcenter.table_b;
