Message-ID: <CACexUksKSOPB5V9e=n1jeqhRN4fQA6tEKaNvA15kxNCckCseoQ@mail.gmail.com>
Date: 2013-02-27T17:38:09Z
From: Zjoanna
Subject: cumulative sum by group and under some criteria
In-Reply-To: <1361972621.95942.YahooMailNeo@web142604.mail.bf1.yahoo.com>
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