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Insert records from multiple tables in MySQL
To insert records from multiple tables, use INSERT INTO SELECT statement. Here, we will insert records from 2 tables.
Let us first create a table −
mysql> create table DemoTable1943 ( Name varchar(20) ); Query OK, 0 rows affected (0.00 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1943 values('Chris');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1943 values('Robert');
Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −
mysql> select * from DemoTable1943;
This will produce the following output −
+--------+ | Name | +--------+ | Chris | | Robert | +--------+ 2 rows in set (0.00 sec)
Here is the query to create second table −
mysql> create table DemoTable1944 ( Age int ); Query OK, 0 rows affected (0.00 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1944 values(23); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1944 values(26); Query OK, 1 row affected (0.00 sec)
Display all records from the table using select statement −
mysql> select * from DemoTable1944;
This will produce the following output −
+------+ | Age | +------+ | 23 | | 26 | +------+ 2 rows in set (0.00 sec)
Here is the query to create third table −
mysql> create table DemoTable1945 ( StudentName varchar(20), StudentAge int ); Query OK, 0 rows affected (0.00 sec)
Here is the query to insert from multiple tables −
mysql> insert into DemoTable1945(StudentName,StudentAge) select tbl1.Name,tbl2.Age from DemoTable1943 tbl1,DemoTable1944 tbl2; Query OK, 4 rows affected (0.00 sec) Records: 4 Duplicates: 0 Warnings: 0
Display all records from the table using select statement −
mysql> select * from DemoTable1945;
This will produce the following output −
+-------------+------------+ | StudentName | StudentAge | +-------------+------------+ | Chris | 23 | | Robert | 23 | | Chris | 26 | | Robert | 26 | +-------------+------------+ 4 rows in set (0.00 sec)
Updated on: 31-Dec-2019
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