[R] merging two dataframes

[dividend]

Hello

I am a new user of R and I need help to merge two large datasets about
stocks with different number of rows and columns.
Both have 2 variable(column) that are have same values ("name" and "date1),
but they are not in same order and "data3" contains much more observations.
In the "data" have dividend information about each stock, and in the second
there are information about the stock prices.

I tried to use this function:
data4<-merge(data,data3, by="name","date1")

But it does not work. 

"data 3" has more than 800.000 observations of daily stock prices for each
stock, and "data" has only 14.000, so i want to make a function that merge
the two datasets to a new dataset with the same length as "data", and also
include all the variables in "data3" where "name" (example: Statoil) and
"date1"(example:31.12.2000)  is the same in both sets.

Can someone please help me?

Regards



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