Insert values in a table by MySQL SELECT from another table in MySQL?
Fir this, use INSERT INTO SELECT statement. Let us first create a table −
mysql> create table DemoTable1
-> (
-> Id int,
-> Name varchar(20),
-> Age int
-> );
Query OK, 0 rows affected (1.72 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1 values(100,'Chris',24);
Query OK, 1 row affected (0.61 sec)
mysql> insert into DemoTable1 values(101,'Adam',23);
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable1 values(102,'John',25);
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable1 values(103,'Carol',26);
Query OK, 1 row affected (0.26 sec)
Display all records from the table using select statement −
mysql> select * from DemoTable1;
This will produce the following output −
+------+-------+------+
| Id | Name | Age |
+------+-------+------+
| 100 | Chris | 24 |
| 101 | Adam | 23 |
| 102 | John | 25 |
| 103 | Carol | 26 |
+------+-------+------+
4 rows in set (0.00 sec)
Here is the query to create second table −
mysql> create table DemoTable2
-> (
-> EmployeeId int,
-> EmployeeFirstName varchar(20),
-> EmployeeAge int
-> );
Query OK, 0 rows affected (1.63 sec)
Here is the query to insert values in DemoTable2 from MySQL select from DemoTable1 −
mysql> insert into DemoTable2(EmployeeId,EmployeeFirstName,EmployeeAge) select Id,Name,Age from DemoTable1 where Id=101;
Query OK, 1 row affected (0.17 sec)
Records: 1 Duplicates: 0 Warnings: 0
Let us check the table records −
mysql> select * from DemoTable2;
Here is the query to create second table −
+------------+-------------------+-------------+
| EmployeeId | EmployeeFirstName | EmployeeAge |
+------------+-------------------+-------------+
| 101 | Adam | 23 |
+------------+-------------------+-------------+
1 row in set (0.00 sec)
Published on 05-Nov-2019 11:11:53
