List.Count

Syntax

List.Count(list as list) as number

About

Returns the number of items in the specified list.

• list: The list to examine.

Example 1

Find the number of values in the list {1, 2, 3}.

Usage

List.Count({1, 2, 3})

Output

3

Example 2

Find the number of times red appears in a list of colors, ignoring case.

Usage

let
    colors = {"Red", "Blue", "GREEN", "red", "Yellow", "RED"},
    redCount = List.Count(
        List.Select(colors, each Text.Lower(_) = "red")
    )
in
    redCount

Output

3

Example 3

Find the number of customers in a list who purchased more than $100.

Usage

let
    customers = {
        [CustomerID = 101, CustomerName = "Alice", AmountPurchased = 150],
        [CustomerID = 102, CustomerName = "Bob", AmountPurchased = 75],
        [CustomerID = 103, CustomerName = "Carol", AmountPurchased = 50],
        [CustomerID = 104, CustomerName = "Dave", AmountPurchased = 90],
        [CustomerID = 105, CustomerName = "Eve", AmountPurchased = 120]
    },
    highValueCustomerCount = List.Count(
        List.Select(customers, each [AmountPurchased] > 100)
    )
in
    highValueCustomerCount

Output

2