live_connection {sqlhelper}

Return the named connection or NULL

Description

Return the named connection or NULL

Usage

live_connection(conn_name)

Arguments

conn_name

Chr. The name of the live connection you want (use connection_info to get names of available connections).

Value

A live connection to a database, or NULL, invisibly, if conn_name is not the name of a live connection

Examples

library(sqlhelper)
connect(
  system.file("examples/sqlhelper_db_conf.yml",
              package="sqlhelper")
)
connection_info()

conn <- live_connection("simple_sqlite")
conn

DBI::dbDisconnect(conn)
is.null(live_connection("simple_sqlite"))
is.null(live_connection("foo"))