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There is a data frame with nearly 10 columns. There is a column called "week" and it contains dates(with multiple entries for a single date) and I need to bind it and aggregate with other three columns respectively. How can I do that in a single step in R? Thanks in advance.

Siva Sankar
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    Please review [mcve]. – G. Grothendieck Oct 30 '17 at 17:37
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    See also [How to ask a good question](https://stackoverflow.com/help/how-to-ask) and [How to make a great R reproducible example](https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example). – Rui Barradas Oct 30 '17 at 17:40

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