How to correctly use INSERT INTO … SELECT in MySQL to avoid Error 1064?


Let us first create a table −

mysql> create table DemoTable1
   -> (
   -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   -> FirstName varchar(100)
   -> );
Query OK, 0 rows affected (0.57 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1(FirstName) values('John');
Query OK, 1 row affected (0.18 sec)

mysql> insert into DemoTable1(FirstName) values('Chris');
Query OK, 1 row affected (0.13 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable1;

This will produce the following output −

+----+-----------+
| Id | FirstName |
+----+-----------+
|  1 | John      |
|  2 | Chris     |
+----+-----------+
2 rows in set (0.00 sec)

Now create the second table −

mysql> create table DemoTable2
   -> (
   -> CustomerId int,
   -> CustomerName varchar(100)
   -> );
Query OK, 0 rows affected (0.43 sec)

Now you can insert some records in the above table using INSERT INTO SELECT command −

mysql> insert into DemoTable2(CustomerId,CustomerName)
   -> select Id,FirstName from DemoTable1;
Query OK, 2 rows affected (0.17 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 −

+------------+--------------+
| CustomerId | CustomerName |
+------------+--------------+
|          1 | John         |
|          2 | Chris        |
+------------+--------------+
2 rows in set (0.00 sec)
raja
Published on 10-Jul-2019 08:34:04
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