Displaying 1 result from an estimated 1 matches for "innerselect".
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inserselect
2004 Mar 05
1
Slow reshape from 5x600000 to 6311 x 132
I have a dataset that's a few hundred thousand rows from a database
(read in via dbreadTable). The database is like:
> str(measures)
`data.frame': 609363 obs. of 5 variables:
$ vih.id : int 1 2 3 4 5 6 7 8 9 10 ...
$ vi.id : int 1 2 3 4 5 6 7 8 9 10 ...
$ vih.value: chr "0" "1989" "0" "N/A" ...
$ vih.date : chr