After establishing a connection as explained here, I tried to write a very simple data frame (trythis, shown below) to a table called gh_test_20141105 in a database called p_cia_t. First, I tried
> conn <- getTdConnection(vdm='vivaldi')
> dbWriteTable(conn=conn,name=tbl,value=trythis)
Error in .verify.JDBC.result(s, "Unable to execute JDBC prepared statement ", :
Unable to execute JDBC prepared statement INSERT INTO p_cia_t.gh_test_20141005 VALUES(?,?,?,?) ([Teradata Database] [TeraJDBC 14.10.00.17] [Error 3932] [SQLState 25000] Only an ET or null statement is legal after a DDL Statement.)
Next, I created an empty table in Teradata:
create table p_cia_t.gh_test_20141105 (eenie integer, meenie integer, minie integer, moe integer);
My next two attempts to write this data frame failed in contradictory ways:
> dbWriteTable(conn=conn,name=tbl,value=trythis,append=T)
Error in .local(conn, statement, ...) :
execute JDBC update query failed in dbSendUpdate ([Teradata Database] [TeraJDBC 14.10.00.17] [Error 3803] [SQLState 42S01] Table 'gh_test_20141105' already exists.)
> dbWriteTable(conn=conn,name=tbl,value=trythis,append=T,overwrite=F)
Error in .local(conn, name, value, ...) :
Cannot append to a non-existing table `p_cia_t.gh_test_20141105'
> trythis
eenie meenie minie moe
1 1 4 7 10
2 2 5 8 11
3 3 6 9 12
> conn
An object of class "JDBCConnection"
Slot "jc":
[1] "Java-Object{com.teradata.jdbc.jdk6.JDK6_SQL_Connection@2f242b11}"
Slot "identifier.quote":
[1] NA
> tbl
[1] "p_cia_t.gh_test_20141105"
Why would append=T object that a table already exists, and how can adding overwrite=F change the objection to "non-existing table?" Neither makes any sense.
I would greatly appreciate any working example of successful writing of a data frame to a Teradata table, whether pre-existing or not, with or without appending.
> sessionInfo()
R version 3.1.2 (2014-10-31)
Platform: x86_64-apple-darwin13.4.0 (64-bit)
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] RJDBC_0.2-4 rJava_0.9-6 DBI_0.3.1 dplyr_0.3.0.2 scales_0.2.4 ggplot2_1.0.0 reshape2_1.4
[8] RODBC_1.3-10 data.table_1.9.4
loaded via a namespace (and not attached):
[1] assertthat_0.1 chron_2.3-45 colorspace_1.2-4 digest_0.6.4 grid_3.1.2 gtable_0.1.2 magrittr_1.0.1
[8] MASS_7.3-35 munsell_0.4.2 parallel_3.1.2 plyr_1.8.1 proto_0.3-10 Rcpp_0.11.3 stringr_0.6.2
[15] tools_3.1.2
