Index Mapping with Join

[Hashiyama89]

Describe the bug
When you use a join query, and want to map one field which exists in both tables, it doesn't work.

Information

• Version of Medoo: 1.7.2
• Type of Database (MySQL, MSSQL, SQLite...): Mysql
• System (Liunx\Windows\Mac): Windows

Detail Code

If I do this, they cant find the index mappin 'books.id'
$result = $this->select( ['[>]photos' => ['id' => 'photo_id']] , [ 'books.id' => [ 'books.id [Int]', 'name', 'url' ]], ["books.id" => $ids]);

In this case, the field ID exists in photos and books, so the query crash.
$result = $this->select( ['[>]photos' => ['id' => 'photo_id']] , [ 'id' => [ 'books.id [Int]', 'name', 'url' ]], ["books.id" => $ids]);

[catfan]

This is a bug and fixed it on cf25af9.

However, when joining table, all those column name should be with table name as prefix.

$this->select([
	'[>]photos' => ['id' => 'photo_id']
], [
	'books.id' => [
		'books.id [Int]',
		'photos.name',
		'photos.url'
	]
], [
	"books.id" => $ids
]);