Yes, but not in the way you're thinking. I believe what you want is one slave with multiple masters, which AFAIK is not supported.
==> STOP READING NOW UNLESS YOU ARE A GENIUS/MADMAN/IDIOT <==
That said, I suppose you could theoretically set up multiple servers on your slave machine, where:
- All servers are read-only - You set up a slave server for each master - You set up an additional server containing MERGE tables pointing to the tables in the slave servers' datadirs.
It's that third one that I'm unsure of. If your application is something like logging, where all your writes are atomic, I think you might be okay. That said, I've never tried something like this, so it could very well be a complete waste of time to try.
Also, the usual restrictions on MERGE tables would apply, so you'll run into trouble if you're using AUTO_INCREMENT or UNIQUE keys. The workaround would be to add a column that contains the master id and convert your key to multipart, incorporating that field.
____________________________________________________________ Eamon Daly
----- Original Message ----- From: "Eric Anderson" <[EMAIL PROTECTED]>
To: <mysql@lists.mysql.com>
Sent: Tuesday, April 05, 2005 4:49 PM
Subject: Replacted MERGE table?
Here's a question for you guys: is it possible to have a replicated table of type MERGE?
Scenario:
Server: WWW1 Table: A.local_table (MASTER)
replicates to:
Server: MEMBERS Table: B.www1 (SLAVE)
and
Server: WWW2 Table: A.local_table (MASTER)
replicates to:
Server: MEMBERS Table: B.www2 (SLAVE)
where B.www1 and B.www2 are type MERGE?
Then I could a SELECT on the type merge (B.www1,B.www2,etc)? Possible? The more I look at it, the more complicated it looks. (sigh)
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