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From | Maciej Miklas <mac.mik...@googlemail.com> |
Subject | CQL 3.0 - UPDATE Statement - how it works? |
Date | Wed, 25 Apr 2012 11:18:27 GMT |
CQL will have UPDATE future, I am trying to understand how this could work. Every write is an append to SSTable, UPDATE would need to change data, but only if it exists, and this is problematic, since we have distributed system. Is UPDATE special kind of insert, which changes given data only if it already exists? Will be UPDATE resolved first during read operation (SSTable merge)? Thanks, Maciej | |
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