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R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.
R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.
> ## Test of data types, based on earlier version in inst/devTests
> ##
> ## Dirk Eddelbuettel, 21 Oct 2008
>
> if ((Sys.getenv("POSTGRES_USER") != "") &
+ (Sys.getenv("POSTGRES_HOST") != "") &
+ (Sys.getenv("POSTGRES_DATABASE") != "")) {
+
+ ## try to load our module and abort if this fails
+ stopifnot(require(RPostgreSQL))
+
+ ## load the PostgresSQL driver
+ drv <- dbDriver("PostgreSQL")
+ ## can't print result as it contains process id which changes print(summary(drv))
+
+ ## connect to the default db
+ con <- dbConnect(drv,
+ user=Sys.getenv("POSTGRES_USER"),
+ password=Sys.getenv("POSTGRES_PASSWD"),
+ host=Sys.getenv("POSTGRES_HOST"),
+ dbname=Sys.getenv("POSTGRES_DATABASE"),
+ port=ifelse((p<-Sys.getenv("POSTGRES_PORT"))!="", p, 5432))
+
+ if (dbExistsTable(con, "tempostgrestable"))
+ dbRemoveTable(con, "tempostgrestable")
+
+ ## Test the numeric mapping
+ dbGetQuery(con, "create table tempostgrestable (intcolumn date, floatcolumn timestamp with time zone);")
+
+ sql <- paste("insert into tempostgrestable ",
+ "values ('2011-03-07', '2011-03-07 16:30:39') ")
+ res <- dbGetQuery(con, sql)
+
+ dat <- dbReadTable(con, "tempostgrestable")
+ dbRemoveTable(con, "tempostgrestable")
+ cat("Read Date and TIMESTAMP values\n")
+
+ ## now test the types of the colums we got
+ if( class(dat[1,1]) == "Date" ){
+ cat("PASS -- Date type is as expected\n")
+ }else{
+ cat("FAIL -- Date type is other than Date: ")
+ cat(class(dat[1,1]))
+ cat("\n")
+ }
+ if( class(dat[1,2])[1] == "POSIXct" ){
+ cat("PASS -- TIMESTAMP is received as POSIXct\n")
+ }else{
+ cat("FAIL -- TIMESTAMP is other than POSIXct: ")
+ cat(class(dat[1,2]))
+ cat("\n")
+ }
+
+ dbWriteTable(con, "tempostgrestable2", dat)
+ dat2 <- dbReadTable(con, "tempostgrestable2")
+ dbRemoveTable(con, "tempostgrestable2")
+ cat("Check that read after write gets the same data types\n")
+
+ ## now test the types of the colums we got
+ if( class(dat2[1,1]) == "Date" ){
+ cat("PASS -- Date type is as expected\n")
+ }else{
+ cat("FAIL -- Date type is other than Date: ")
+ cat(class(dat2[1,1]))
+ cat("\n")
+ }
+ if( class(dat2[1,2])[1] == "POSIXct" ){
+ cat("PASS -- TIMESTAMP is received as POSIXct\n")
+ }else{
+ cat("FAIL -- TIMESTAMP is other than POSIXct: ")
+ cat(class(dat2[1,2]))
+ cat("\n")
+ }
+
+
+ dbDisconnect(con)
+ dbUnloadDriver(drv)
+
+ cat("DONE\n")
+ }
Loading required package: RPostgreSQL
Loading required package: DBI
Read Date and TIMESTAMP values
PASS -- Date type is as expected
PASS -- TIMESTAMP is received as POSIXct
Check that read after write gets the same data types
PASS -- Date type is as expected
PASS -- TIMESTAMP is received as POSIXct
DONE
>
> proc.time()
user system elapsed
0.513 0.031 0.618
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