To merge two MySQL tables, use the following syntax -
INSERT IGNORE INTO yourTableName1 select *from yourTableName2;
We will create two tables containing some records. After that, the merge process will start using the above syntax.
Create the first table-
mysql> create table MergeDemo1 -> ( -> id int, -> primary key(id), -> Name varchar(200) -> ); Query OK, 0 rows affected (1.00 sec)
Insert records into the table-
mysql> insert into MergeDemo1 values(1,'John'); Query OK, 1 row affected (0.21 sec)
Display records in the table
mysql> select *from MergeDemo1;
The following is the first table The output of -
+----+------+ | id | Name | +----+------+ | 1 | John | +----+------+ 1 row in set (0.00 sec)
Now let us create the second table-
mysql> create table MergeDemo2 -> ( -> id int, -> primary key(id), -> Name varchar(200) -> ); Query OK, 0 rows affected (0.51 sec)
Insert the records in the second table-
mysql> insert into MergeDemo2 values(2,'David'); Query OK, 1 row affected (0.18 sec)
Display all the records in the second table Record -
mysql> select *from MergeDemo2;
The following is the output of the second table-
+----+-------+ | id | Name | +----+-------+ | 2 | David | +----+-------+ 1 row in set (0.00 sec)
The following is the query to merge the two tables.
mysql> INSERT IGNORE -> INTO MergeDemo1 select *from MergeDemo2; Query OK, 1 row affected (0.19 sec) Records: 1 Duplicates: 0 Warnings: 0
Now we use the select statement to check whether the second table data is merged. The query is as follows -
mysql> select *from MergeDemo1;
This is the output showing the merged table -
+----+-------+ | id | Name | +----+-------+ | 1 | John | | 2 | David | +----+-------+ 2 rows in set (0.00 sec)
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