presto_has_default: Check if default database is available.

In RPresto: DBI Connector to Presto

Check if default database is available.

Description

presto_default() works similarly but returns a connection on success and throws a testthat skip condition on failure, making it suitable for use in tests.

RPresto examples and tests connect to a default database via dbConnect(Presto(), ...). This function checks if that database is available, and if not, displays an informative message.

Usage

presto_default(...)

presto_has_default(...)

Arguments

...	Additional arguments passed on to DBI::dbConnect()

Examples

if (presto_has_default()) {
  db <- presto_default()
  print(dbListTables(db))
  dbDisconnect(db)
} else {
  message("No database connection.")
}

RPresto documentation built on April 3, 2025, 11:40 p.m.