问题
In sqldf_0.4-7.1 I get:
Error in if (.allows_extensions(db)) { :
missing value where TRUE/FALSE needed
Where is the package that fixes the bug? My error is the same as the one generated by:
sqldf("select * from warpbreaks limit 6")
I downloaded sqldf v0.4-7.1 from CRAN but with newer source does not help some 8 hours later.
回答1:
Problem is with that sqldf version. Fixed version should be already on the cran so you will need to update your sqldf package.
Download file sqldf_0.4-9.tar.gz and in console run:
R CMD INSTALL sqldf_0.4-9.tar.gz
来源：https://stackoverflow.com/questions/26583965/sqldf-missing-value-where-true-false-needed