names-methods: The Names of an object

Description Usage Arguments Value Author(s) See Also Examples

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

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## 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. [email protected]

See Also

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

Examples

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## 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)

PivotalR documentation built on May 30, 2017, 8:18 a.m.