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Re: RAM requirements- new server
Posted by: Aftab Khan
Date: April 07, 2009 08:18AM

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- What is also good about partitioning is that we can do this on our existing tables whilst running live and insert old data back into the newly paritioned tables, rather than having to create new tables and insert ALL data into them.
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don't do it on live without testing...

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- I assume then that the table would need to be optimised/re-indexed or would that happen on the fly, as well?
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it depends how do you implement partioning i.e. by key, by list, etc..
e.g.

Remember to add partitioning key in your queries. if your queries will not include partitioning key then optimizer will search all partitions.
e.g.
Verify which partition(s) will be used,

EXPLAIN PARTITIONS SELECT * FROM t1 WHERE id < 5\G

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