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DuckDB function list_reduce

Source: R/duckdb-funs.R
list_reduce.Rd

Reduces all elements of the input list into a single scalar value by executing the lambda function on a running result and the next list element. The lambda function has an optional initial_value argument.

Arguments

list

ANY[]

initial_value

ANY

lambda(x, y)

LAMBDA

Value

ANY

Overloads

  • list_reduce(list = `ANY[]`, `lambda(x,y)` = LAMBDA)

  • list_reduce(list = `ANY[]`, `lambda(x,y)` = LAMBDA, initial_value = ANY)

SQL examples

list_reduce([1, 2, 3], lambda x, y : x + y)