get_connection: Opens connection to the database

In SCDB: Easily Access and Maintain Time-Based Versioned Data (Slowly-Changing-Dimension)

Opens connection to the database

Description

This is a convenience wrapper for DBI::dbConnect() for different database backends.

Connects to the specified dbname of host:port using user and password from given arguments (if applicable). Certain drivers may use credentials stored in a file, such as ~/.pgpass (PostgreSQL).

Usage

get_connection(drv, ...)

## S3 method for class 'SQLiteDriver'
get_connection(
  drv,
  dbname = ":memory:",
  ...,
  bigint = c("integer", "bigint64", "numeric", "character")
)

## S3 method for class 'PqDriver'
get_connection(
  drv,
  dbname = NULL,
  host = NULL,
  port = NULL,
  password = NULL,
  user = NULL,
  ...,
  bigint = c("integer", "bigint64", "numeric", "character"),
  check_interrupts = TRUE,
  timezone = Sys.timezone(),
  timezone_out = Sys.timezone()
)

## S3 method for class 'OdbcDriver'
get_connection(
  drv,
  dsn = NULL,
  ...,
  bigint = c("integer", "bigint64", "numeric", "character"),
  timezone = Sys.timezone(),
  timezone_out = Sys.timezone()
)

## S3 method for class 'duckdb_driver'
get_connection(
  drv,
  dbdir = ":memory:",
  ...,
  bigint = c("numeric", "character"),
  timezone_out = Sys.timezone()
)

## Default S3 method:
get_connection(drv, ...)

Arguments

drv	(DBIDriver(1) or DBIConnection(1)) The driver for the connection (defaults to SQLiteDriver).
...	Additional parameters sent to DBI::dbConnect().
dbname	(character(1)) Name of the database located at the host.
bigint	(character(1)) The datatype to convert integers to. Support depends on the database backend.
host	(character(1)) The ip of the host to connect to.
port	(numeric(1) or character(1)) Host port to connect to.
password	(character(1)) Password to login with.
user	(character(1)) Username to login with.
check_interrupts	(logical(1)) Should user interrupts be checked during the query execution?
timezone	(character(1)) Sets the timezone of DBI::dbConnect(). Must be in OlsonNames().
timezone_out	(character(1)) Sets the timezone_out of DBI::dbConnect(). Must be in OlsonNames().
dsn	(character(1)) The data source name to connect to.
dbdir	(character(1)) The directory where the database is located.

Value

An object that inherits from DBIConnection driver specified in drv.

See Also

RSQLite::SQLite

RPostgres::Postgres

odbc::odbc

duckdb::duckdb

Examples

  conn <- get_connection(drv = RSQLite::SQLite(), dbname = ":memory:")

  DBI::dbIsValid(conn) # TRUE

  close_connection(conn)

  DBI::dbIsValid(conn) # FALSE

SCDB documentation built on Oct. 4, 2024, 1:09 a.m.