db.table-class: Class '"db.table"'

In PivotalR: A Fast, Easy-to-Use Tool for Manipulating Tables in Databases and a Wrapper of MADlib

Description

A sub-class of db.data.frame which points to tables in the database

Objects from the Class

Objects can be created by calls of db.data.frame or as.db.data.frame

Slots

As a sub-class, this class has all the slots of db.data.frame. Here we list the extra slots.

.key:

Object of class "character". The name of the primary key column name. Currently only one primary key column is supported. This value can be set during the creation of the object when using the function db.data.frame. The functions key and key<- can be used to get and set this value.

.dim:

Object of class "numeric". A two-integer array, the dimension information of the table that this object points to. The first integer is the total row number of the table, and the second is the number of columns of the table. dim,db.table-method gets this value.

Extends

Class "db.data.frame", directly. Class "db.obj", by class "db.data.frame", distance 2.

Methods

See db.data.frame for all the methods that can take this class of object as an object.xs

Author(s)

Author: Predictive Analytics Team at Pivotal Inc.

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

See Also

db.data.frame creates a db.data.frame object.

as.db.data.frame converts db.Rquery object, data.frame, or a data file into a db.data.frame object and at the same time creates a new table in the database.

db.data.frame is the superclass.

db.view is the other subclass of db.data.frame

db.Rquery is another sub-class of db.obj.

lk or lookat display a part of the table

PivotalR documentation built on March 13, 2021, 1:06 a.m.