`INSERT INTO` query is not working

Question

Please have a look at the following code

INSERT INTO `test2.key_word` SELECT * from `test.key_word`

I am using PHPMyAdmin. This query simply gives the error No Database Selected when run inside the server 127.0.0.1 area. If I run this inside query inside the SQL Query in test2.key_word, then it says Table 'test2.test2.key_word' doesn't exist.

Below is how the test.key_word table is created

CREATE TABLE `key_word` (
 `primary_key` bigint(20) NOT NULL AUTO_INCREMENT,
 `indexVal` int(11) NOT NULL,
 `hashed_word` char(3) NOT NULL,
 PRIMARY KEY (`primary_key`),
 KEY `hashed_word` (`hashed_word`,`indexVal`)
) ENGINE=InnoDB AUTO_INCREMENT=28570982 DEFAULT CHARSET=latin1

Below is how the test2.key_word table is created

CREATE TABLE `key_word` (
 `primary_key` bigint(20) NOT NULL,
 `indexVal` int(11) NOT NULL,
 `hashed_word` char(3) NOT NULL,
 PRIMARY KEY (`primary_key`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1

Why this is not getting copied? Please help.

Answer 1

Use as per below, you have made db and tablename as a single name encsoling by db.table.

INSERT INTO test2.key_word SELECT * from test.key_word;

Note: Make sure no of columns should be same in source and target table.