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From yonghu <yongyong...@gmail.com>
Subject multiple data versions vs. multiple rows?
Date Mon, 19 Jan 2015 19:28:14 GMT
Dear all,

I want to record the user history data. I know there exists two options,
one is to store user events in a single row with multiple data versions and
the other one is to use multiple rows. I wonder which one is better for
performance?

Thanks!

Yong

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