dbApply-methods

dbApply,PostgreSQLResult-method

Applies R/S-Plus functions to groups of remote DBMS rows without
 bringing an entire result set all at once. The result set
 is expected to be sorted by the grouping field.

programming

interface

database

Database interface and PostgreSQL driver for R This
package provides a Database Interface (DBI) compliant driver
for R to access PostgreSQL database systems.

In order to build and install this package from source, PostgreSQL
itself must be present your system to provide PostgreSQL
functionality via its libraries and header files. These files
are provided as postgresql-devel package under some Linux
distributions.

On Microsoft Windows system the attached libpq library source will be
used.

A wiki and issue tracking system for the package are available at
Google Code at https://code.google.com/p/rpostgresql/ .

Tomoaki Nishiyama

RPostgreSQL

R interface to the PostgreSQL database system

dbApply-methods function

<dl class="dl-horizontal">
 <dt>res</dt><dd>a PostgreSQL result set (see <code><a rd-options="DBI" href="/link/dbSendQuery?package=RPostgreSQL&version=0.4-1&to=DBI" data-mini-rdoc="DBI::dbSendQuery">dbSendQuery</a></code>).</dd>
 <dt>...</dt><dd>any additional arguments to be passed to <code>FUN</code>.</dd>
</dl>

Methods

Apply R/S-Plus functions to remote groups of DBMS rows (experimental) — dbApply-methods

<dl class='dl-horizontal'>
 <dt>res</dt><dd>a PostgreSQL result set (see <code><a rd-options='DBI' href='dbSendQuery'>dbSendQuery</a></code>).</dd>
 <dt>...</dt><dd>any additional arguments to be passed to <code>FUN</code>.</dd>
</dl>

dbApply-methods: Apply R/S-Plus functions to remote groups of DBMS rows (experimental)

Description

Arguments

Methods

References

See Also

Examples