[R] merging data frames

[Jim Holtman]

?merge

Sent from my iPad

On Jun 14, 2013, at 0:51, Yasin Gocgun <entropy053 at gmail.com> wrote:

> Hi,
> 
> I have been struggling with the issue of merging data frames that have
> common columns and have different dimensions. Although I made alot of
> search about it on internet, I could not find any function that would
> efficiently perform the required operation. So I would appreciate if anyone
> knowing how to resolve the problem would explain me the solution.
> 
> As you will see, the below data frames have one common column (they would
> have multiple common columns in general), and I simply want to create a
> table that is the union of A and B, say table C. So the first row of C must
> include all the necessary info about the person with the respective COMPID,
> which is provided in A and B.
> 
> A:
> COMPID CLR_DOT CA_TYPE CA_YEAR DT_FNDNG DT_BIOP NORMAL  1030956 XXGRX P 10
> 19890919 19890919 0  2511425 XXXRX T 6 19891005 19891030 0  3205129 XXGRX T
> 8 19900227 19900227 0 ...
> 
> B:
> COMPID CNTR_ALL ALLOC AG_GRCAL ENRL_DT EXP_SCR  1000012 0 NO 1 19800122 5
> 1000021 0 NO 2 19800121 5  1000030 0 NO 3 19800121 5  1000049 0 NO 4
> 19800121 5 ...
> 
> I tried rbind.fill but it did not work. I am aware that such operations can
> be done in SAS in a minute, so I thought R should be as efficient as SAS in
> performing such operations...
> 
> Thank you in advance,
> 
> Yasin
> 
>    [[alternative HTML version deleted]]
> 
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