Insert data from one table to another in MySQL?

CsharpServer Side ProgrammingProgramming

To insert data from one table to another, use the INSERT INTO SELECT statement. Let us first create a table −

mysql> create table DemoTable1
   -> (
   -> Id int,
   -> FirstName varchar(20)
   -> );
Query OK, 0 rows affected (0.49 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1 values(101,'Adam');
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable1 values(102,'John');
Query OK, 1 row affected (0.11 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable1;

This will produce the following output −

+------+-----------+
| Id   | FirstName |
+------+-----------+
|  101 | Adam      |
|  102 | John      |
+------+-----------+
2 rows in set (0.00 sec)

Following is the query to create the second table −

mysql> create table DemoTable2
   -> (
   -> EmployeeId int,
   -> EmployeeName varchar(20)
   -> );
Query OK, 0 rows affected (0.42 sec)

Here is the query to insert data from one table to another in MySQL −

mysql> insert into DemoTable2(EmployeeId,EmployeeName) select Id,FirstName from DemoTable1;
Query OK, 2 rows affected (0.15 sec)
Records: 2 Duplicates: 0 Warnings: 0

Display all records from the table using select statement −

mysql> select *from DemoTable2;

This will produce the following output −

+------------+--------------+
| EmployeeId | EmployeeName |
+------------+--------------+
|        101 | Adam         |
|        102 | John         |
+------------+--------------+
2 rows in set (0.00 sec)
raja
Published on 11-Dec-2019 16:13:56
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