Check If A Function Exists — function

Check if the function with the specified name exists in the specified database.

Usage

function_exists(sc, fn, database = NULL)

Arguments

sc: A spark_connection.
fn: character(1). The name of the function.
database: character(1). The name of the database for which the functions should be listed (default: NULL).

Value

A logical(1) vector indicating TRUE if the function exists within the specified database and FALSE otherwise.

Details

function_exists() includes in-built functions such as abs. To see if a built-in function exists you must use the unqualified name. If you create a function you can use the qualified name. If you want to check if a built-in function exists specify the database as NULL.

Examples

if (FALSE) {
sc <- sparklyr::spark_connect(master = "local")
function_exists(sc = sc, fn = "abs")
}