mysql中表的复制
作者：互联网
表的复制
语法：
····create table 表名 as select 语句；
·····将查询结果当做表创建出来。
例：
mysql> show tables;
+-----------------------+
| Tables_in_bjpowernode |
+-----------------------+
| dept |
| emp |
| salgrade |
| t_student |
+-----------------------+
4 rows in set (0.01 sec)
mysql> create table dept1 as select * from dept;
Query OK, 4 rows affected (0.02 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql> show tables;
+-----------------------+
| Tables_in_bjpowernode |
+-----------------------+
| dept |
| dept1 |
| emp |
| salgrade |
| t_student |
+-----------------------+
5 rows in set (0.00 sec)
mysql> select * from dept1;
+--------+------------+----------+
| DEPTNO | DNAME | LOC |
+--------+------------+----------+
| 10 | ACCOUNTING | NEW YORK |
| 20 | RESEARCH | DALLAS |
| 30 | SALES | CHICAGO |
| 40 | OPERATIONS | BOSTON |
+--------+------------+----------+
4 rows in set (0.00 sec)
将查询结果插入到一张表中：
mysql> select * from dept1;
+--------+------------+----------+
| DEPTNO | DNAME | LOC |
+--------+------------+----------+
| 10 | ACCOUNTING | NEW YORK |
| 20 | RESEARCH | DALLAS |
| 30 | SALES | CHICAGO |
| 40 | OPERATIONS | BOSTON |
+--------+------------+----------+
4 rows in set (0.00 sec)
mysql> insert into dept1 select * from dept;
Query OK, 4 rows affected (0.00 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql> select * from dept1;
+--------+------------+----------+
| DEPTNO | DNAME | LOC |
+--------+------------+----------+
| 10 | ACCOUNTING | NEW YORK |
| 20 | RESEARCH | DALLAS |
| 30 | SALES | CHICAGO |
| 40 | OPERATIONS | BOSTON |
| 10 | ACCOUNTING | NEW YORK |
| 20 | RESEARCH | DALLAS |
| 30 | SALES | CHICAGO |
| 40 | OPERATIONS | BOSTON |
+--------+------------+----------+
8 rows in set (0.00 sec)
标签：rows,+--------+------------+----------+,中表,复制,sec,mysql,+----------------------- 来源： https://blog.csdn.net/qq_45148387/article/details/116398296