Dear all,
I recently read the book " R data preperation and manipulation using sqldf
package" by Djoni Darmawikarta
However, I have a problem with manipulation of dates using this package, I do
not get the expected results. Do I need to install some packages to be able to
subset the data by dates in sqldf?
I am not getting Djoni Darmawikarta email address.
Please see the practice data attached and advise,
Kind regards,
Mangalani Peter Makananisa (0005786)
South African Revenue Service (SARS)
Specialist: Statistical Support
TCEI_OR (Head Office)
Tell: +2712 422 7357, Cell: +2782 456 4669
product = read.csv('D:/Users/S1033067/Desktop/sqldf prac/sqlprac.csv',
na.strings = '', header = T)
head(product)
library(sqldf)
sqldf()
# out-put
> sqldf("select * from product
+ where (date(Launch_dt) >= date('01-01-2003'))
+ ")
[1] P_Code P_Name Launch_dt Price
<0 rows> (or 0-length row.names)
>
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