RE: [PHP-DB] How to querry two db in a single statement?
| From: | Rick Emery | Date: | Fri, 04 Jan 2002 14:19:29 +0000 |
| Subject: | RE: [PHP-DB] How to querry two db in a single statement? | ||
| Groups: | php.db | ||
| Request: | Send a blank email to php-db+get-15390@lists.php.net to get a copy of this message | ||
You need to provide more info than you have.
Assume you have two databases, named DB1 and DB2. In each database, you
have a table, named "mytable", in which there are fields, named "field1" and
"field2" that you'd like to compare. After opening the databases, you may
perform the following:
SELECT * FROM DB1.mytable,DB2.mytable WHERE
DB1.mytable.field1=DB2.mytable.field1
&& DB1.mytable.field2=DB2.mytable.field2;
Each reference may be broken down into: <database>.<tble>.<field>
-----Original Message-----
From: Andy [mailto:news.letters@gmx.de]
Sent: Friday, January 04, 2002 7:50 AM
To: php-db@lists.php.net
Subject: [PHP-DB] How to querry two db in a single statement?
Hi there,
I would like to make a querry on 2 db. There is info in tables I would like
to compare.
As I know, there has first to be a conect on the db before the querry. But
how to do this on 2 db??
Thanx for any help.
Andy
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