db.existsObject {PivotalR} | R Documentation |
Test whether a table or view exists in the database
db.existsObject(name, conn.id = 1, is.temp = FALSE)
name |
A string, the name of table or view |
conn.id |
An integer, default is 1. The ID of the database connection. |
is.temp |
A logical, default is |
This function returns different types of results depending the input.
If name
has the format of myschema.mytable
, the return
value is a logical. It is TRUE if the table/view exists in the
database.
If name
has the format of mytable
and is.temp =
FALSE
, the return value is also a logical, which is TRUE if the table/view exists in the
database.
If name
has the format of mytable
and is.temp =
TRUE
, the return value is a list. The list has two elements. The
first is a logical, which is TRUE if the table/view exists in the
database. The second is a character array with 2 elements, whose first
is the temporary schema name and the second is the table/view name.
Author: Predictive Analytics Team at Pivotal Inc.
Maintainer: Frank McQuillan, Pivotal Inc. fmcquillan@pivotal.io
objects to See Also as help
, ~~~
## Not run: ## set up the database connection ## Assume that .port is port number and .dbname is the database name cid <- db.connect(port = .port, dbname = .dbname, verbose = FALSE) db.list() db.existsObject("madlibtestdata.lin_ornstein", cid) db.disconnect(cid, verbose = FALSE) ## End(Not run)