is.db.data.frame: Check if an object is of type 'db.data.frame'

In greenplum-db/GreenplumR: A Fast, Easy-to-Use Tool for Manipulating Tables in Databases

Check if an object is of type db.data.frame

Description

This function checks if the input is of type db.data.frame.

Usage

is.db.data.frame(x)

Arguments

x	The input can be of any type.

Details

is.db.data.frame() returns TRUE if x is of type db.data.frame. Otherwise, it returns FALSE.

Value

A logical. Returns TRUE if the input is of type db.data.frame

Author(s)

Author: Predictive Analytics Team at Pivotal Inc.

Maintainer: Frank McQuillan, Pivotal Inc. [e-mail]

See Also

as.db.data.frame Convert an object into another object of type db.data.frame.

Examples

## 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)

## create a table from the example data.frame "abalone"
tmp <- as.db.data.frame(abalone, conn.id = cid, verbose = FALSE)
x <- db.data.frame(content(tmp), conn.id = cid, key = 'id')

## getting the primary key
is.db.data.frame(x) #check if x is of type db.data.frame

db.disconnect(cid, verbose = FALSE)

## End(Not run)

greenplum-db/GreenplumR documentation built on Sept. 2, 2023, 8:09 a.m.