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Re: MYSQL Replication 4.0.X
Posted by: Christian Meisinger
Date: May 04, 2005 02:10AM

what do you mean with 'correlate the data in a third MYSQL DB'?

a simple copy:
server1.mysql1.db1 -> server3.mysql1.db1
server2.mysql1.db1 -> server3.mysql2.db1

that's no problem but you need two mysql running on server3.
mysql 4.x doesn't support mulitmaster replication. (i think 5.x will support it)

or a merge:
server1.mysql1.db1 ->
server3.mysql1.db1
server2.mysql1.db1 ->

beside the multimaster problem a merge would be a problem because of unique, primary keys and auto_increment (if all tables an server1 and server2 have the same names).

so if you want a merge you need to code your own scripts and check for duplicated keys and and and... sounds like a tough job.

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