names-methods: The Names of an object

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

The Names of an object

Description

This function gives the names of a db.obj, which are the column names of a db.table or db.view. The names are returned as a list

Usage

## S4 method for signature 'db.obj'
names(x)
## S4 replacement method for signature 'db.obj'
names(x) <- value

Arguments

x	A db.obj. The input data frame for which the column names are required.
value	An array of strings. New names to replace the names of x.

Value

Returns a string with the list of the column names of data frame. The names are ordered.

Author(s)

Author: Predictive Analytics Team at Pivotal Inc.

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

See Also

db.obj, db.data.frame, db.table, db.view, db.Rquery are the class hierarchy structure of this package.

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"
delete("abalone", conn.id = cid)
x <- as.db.data.frame(abalone, "abalone", conn.id = cid, verbose = FALSE)
## preview of a table
lk(x, nrows = 10) # extract 10 rows of data

## get names of all columns
names(x)

db.disconnect(cid, verbose = FALSE)

## End(Not run)

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