[R-sig-DB] RJDBC and dbWriteTable, append and overwrite options fail
MacQueen, Don
m@cqueen1 @end|ng |rom ||n|@gov
Fri Jan 7 21:20:53 CET 2011
Using RJDBC I've created a functioning connection to an Oracle database
(some details omitted):
dbm <- JDBC('oracle.jdbc.OracleDriver', ¹path.to.jar¹, identifier.quote="`")
con <- dbConnect(dbm, )
When I try to use dbWriteTable() with either append=TRUE or overwrite=TRUE,
I get an error. I've been able to use those options with Roracle.
See example below.
Is this a limitation in RJDBC, or am I missing something?
Thanks
-Don
> tsttbl <- data.frame(x=1:7, a=c('AA','BB',letters[1:5]))
>
> dbWriteTable(con,'junk',tsttbl,row.names=FALSE)
[1] TRUE
>
> dbGetQuery(con,'select * from junk')
X A
1 1 AA
2 2 BB
3 3 a
4 4 b
5 5 c
6 6 d
7 7 e
>
> dbWriteTable(con,'junk',tsttbl,row.names=FALSE, append=TRUE)
Error in .local(conn, statement, ...) :
execute JDBC update query failed in dbSendUpdate (ORA-00955: name is
already used by an existing object
)
---- yes, I need to upgrade to 2.12.1, and will, but the relevant packages
are current
> sessionInfo()
R version 2.12.0 (2010-10-15)
Platform: x86_64-unknown-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=C LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] RJDBC_0.1-5 rJava_0.8-8 DBI_0.2-5
--
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
925 423-1062
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