Nicola Crane created ARROW-15797: ------------------------------------ Summary: [R] Supplying column names to open_dataset results in all columns being read in as strings Key: ARROW-15797 URL: https://issues.apache.org/jira/browse/ARROW-15797 Project: Apache Arrow Issue Type: Bug Components: R Reporter: Nicola Crane
{code:r} library(arrow) #> #> Attaching package: 'arrow' #> The following object is masked from 'package:utils': #> #> timestamp td <- tempfile() dir.create(td) write_dataset(mtcars, td, format = "csv") # Correct column types open_dataset(td, format = "csv") #> FileSystemDataset with 1 csv file #> mpg: double #> cyl: int64 #> disp: double #> hp: int64 #> drat: double #> wt: double #> qsec: double #> vs: int64 #> am: int64 #> gear: int64 #> carb: int64 # Incorrect column types open_dataset(td, format = "csv", column_names = c("mpg", "cyl", "disp", "hp", "drat", "wt", "qsec", "vs", "am", "gear", "carb")) #> FileSystemDataset with 1 csv file #> mpg: string #> cyl: string #> disp: string #> hp: string #> drat: string #> wt: string #> qsec: string #> vs: string #> am: string #> gear: string #> carb: string {code} -- This message was sent by Atlassian Jira (v8.20.1#820001)