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Re: dump, drop database then merge/aggregate




On 28/02/16 20:50, lejeczek wrote:
fellow users, hopefully you experts too, could help...

...me to understand how, and what should be the best practice to dump database, then drop it and merge the dumps.. What I'd like to do is something probably many have done and I wonder how it's done best. A box will be dumping a database (maybe? tables if it's better) then dropping (purging the data) it and on a different system that dump swill be inserted/aggregated into the same database. It reminds me a kind of incremental backup except for the fact that source data will be dropped/purged on regular basis, but before a drop, a dump which later will be used to sort of reconstruct that same database.

How do you recommend to do it? I'm guessing trickiest bit might this reconstruction part, how to merge dumps safely, naturally while maintaining consistency & integrity? Actual syntax, as usually any code examples are, would be best.

many thanks.


I guess dropping a tables is not really what I should even consider - should I just be deleting everything from tables in order to remove data? And if I was to use dumps of such a database (where data was first cleansed then some data was collected) to merge data again would it work and merge that newly collected data with what's already in the database?


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