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## Test of date and datetime types, based on earlier version in inst/devTests
##
## Dirk Eddelbuettel, 21 Oct 2008
dbTypeTests <- function(con, dateclass="timestamp without time zone") {
cat("\n\n**** Trying with ", dateclass, "\n")
if (dbExistsTable(con, "tempostgrestable"))
dbRemoveTable(con, "tempostgrestable")
dbGetQuery(con, paste("create table tempostgrestable (tt ", dateclass, ", zz integer);", sep=""))
dbGetQuery(con, "insert into tempostgrestable values('2008-07-01 14:15:16.123', 1);")
now <- ISOdatetime(2000,1,2,3,4,5.678)
dbGetQuery(con, paste("insert into tempostgrestable values('", format(now), "', 2);", sep=""))
res <- dbReadTable(con, "tempostgrestable")
print(res)
res <- dbSendQuery(con, "select tt from tempostgrestable;")
data <- fetch(res, n=-1)
print(dbColumnInfo(res))
times <- data[,1]
print(times)
print(class(times[1]))
print(diff(times))
dbRemoveTable(con, "tempostgrestable")
invisible(NULL)
}
## 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))
## Force a timezone to make the tests comparable at different locations
Sys.setenv("PGDATESTYLE"="German")
Sys.setenv("TZ"="UTC")
## 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))
dbTypeTests(con, "timestamp")
# dbTypeTests(con, "timestamp with time zone")
# output differs depending on the compute environment
dbTypeTests(con, "date")
dbDisconnect(con)
}
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