ROracle - dbWriteTable, date columns

对着背影说爱祢 提交于 2019-12-07 12:45:01

问题


How can I write data frame with date columns to Oracle database using dbWriteTable? I am trying:

df <-read.table(header = TRUE, sep = ',', stringsAsFactors = FALSE,
text="
id,product,origination_date,repayment_date
1,A,2012-01-01,2012-02-01
2,A,2012-01-01,2012-04-01
3,A,2012-01-01,NA
4,A,2012-02-01,2012-03-01
")

df$origination_date <- as.Date(df$origination_date, format = '%Y-%d-%m')
df$repayment_date <- as.Date(df$repayment_date, format = '%Y-%d-%m')
names(df) <- toupper(names(df))

dbWriteTable(oraCon, 'TMP', df)

This is result in database:

1   A   31-DEC-11 11.00.00.000000 PM    01-JAN-12 11.00.00.000000 PM
2   A   31-DEC-11 11.00.00.000000 PM    03-JAN-12 11.00.00.000000 PM
3   A   31-DEC-11 11.00.00.000000 PM    
4   A   01-JAN-12 11.00.00.000000 PM    02-JAN-12 11.00.00.000000 PM

I can maybe understand that I end up with timestamp and not date, but cannot understand why there is 31-DEC-11 where I wanted 01-JAN-12.


回答1:


This problem is due to the timezone settings of both your operating system and your Oracle session. You can change these settings as follows:

Sys.setenv(TZ='CET')
Sys.setenv(ORA_SDTZ='CET')

Obviously you may have to choose a different timezone. I include these settings in the beginning of all my R scripts, but there may be a way to make these settings your new default.

See here for more information on the Oracle timezone parameters.



来源:https://stackoverflow.com/questions/28914875/roracle-dbwritetable-date-columns

标签
易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!