Fri Jul 23 01:47:34 PDT 2004
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How does table inheritance help me to populate tables on another host? I have, say, one master and 3 slaves, all with the same schema, but table A in each slave as a sub-set of the data in table A on the master. I was thinking maybe of defining a view, A, across tables like host1_A, host2_A, etc., then defining a rule to map updates to the appropriate table, then allow replication to work from that point on. But I still have the question of naming on each host (though I guess I could use the same view scheme on each slave, as well). I'm pretty new to postgres, so there may well be an aspect of table inheritance of which I'm completely ignorant. Did you have a particular approach in mind? Thanks! - DAP -----Original Message----- From: Dan Wright [mailto:wright at smx.pair.com] Sent: Thu 7/22/2004 6:15 PM To: David Parker Cc: slony1-general at gborg.postgresql.org Subject: Re: [Slony1-general] partitioning with replication It sounds like you are doing the kind of thing that table inheritance is supposed to solve. If you use inheritance in your DB tables, you could get exactly what you are asking for from slony right now. -Dan Daniel J. Wright wright at pair.com Lead Software Developer, pairNIC https://www.pairnic.com pair Networks, Inc. http://www.pair.com On Thu, 22 Jul 2004, David Parker wrote: > In one area of our application, we would like to be able to capture an > update to a master table, and select the target replication table based > on some key value in the update data, e.g. "if key_field == A, replicate > to table X on host A; if key_field == B, replicate to table X on host > B", etc.
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