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## dbWriteTable test
##
## 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))
## 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))
# create a table
res <- dbGetQuery(con, "CREATE TABLE aa (pk integer primary key, v1 float not null, v2 float)" )
## run a simple query and show the query result
res <- dbGetQuery(con, "INSERT INTO aa VALUES(3, 2, NULL)" )
res <- dbSendQuery(con, "select pk, v1, v2, v1+v2 from aa")
cat("dbColumnInfo\n")
print(dbColumnInfo(res))
print(dbColumnInfo(res))
cat("SELECT result\n")
df <- fetch(res, n=-1)
print(df)
## cleanup
cat("Removing \"AA\"\n")
dbRemoveTable(con, "aa")
## and disconnect
dbDisconnect(con)
}
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