
R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
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> 
> ## dbExists test with schema name: reported as Issue 3 at
> ## http://code.google.com/p/rpostgresql/issues/detail?id=3
> ## and based on an earlier email by Prasenjit Kapat
> ##
> ## Assumes that
> ##  a) PostgreSQL is running, and
> ##  b) the current user can connect
> ## both of which are not viable for release but suitable while we test
> ##
> ## Dirk Eddelbuettel, 10 Sep 2009
> 
> ## only run this if this env.var is set correctly
> 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))
+     stopifnot(require(datasets))
+ 
+     ## load the PostgresSQL driver
+     drv <- dbDriver("PostgreSQL")
+ 
+     ## 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, "rockdata")) {
+         print("Removing rockdata\n")
+         dbRemoveTable(con, "rockdata")
+     }
+ 
+     dbWriteTable(con, "rockdata", rock)
+ 
+     ## run a simple dbExists
+     cat("Does rockdata exist? ")
+     print(res <- dbExistsTable(con, "rockdata"))
+ 
+     ## this should return TRUE but did not -- does now after patch
+     cat("Does public.rockdata exist? ")
+     print(res <- dbExistsTable(con, "public.rockdata"))
+ 
+     ## cleanup
+     if (dbExistsTable(con, "rockdata")) {
+         print("Removing rockdata\n")
+         dbRemoveTable(con, "rockdata")
+     }
+ 
+     ## and disconnect
+     dbDisconnect(con)
+ }
Loading required package: RPostgreSQL
Loading required package: DBI
Does rockdata exist? [1] TRUE
Does public.rockdata exist? [1] FALSE
[1] "Removing rockdata\n"
[1] TRUE
> 
> proc.time()
   user  system elapsed 
  0.493   0.035   0.572 
