mysql 表的相關操作
創建表
create table tt
沒有才創建表
create table if not exists tt
沒有才創建表
create table t2 like t1 create table t2 select * from t1 where 1 = 2
的話,insert into t2 select * from t1
insert into t2 (column1, column2, ...) select (column1, column2, ...) from t1