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Table.AddColumn

  • Article
  • 03/18/2025

Syntax

Table.AddColumn(table as table, newColumnName as text, columnGenerator as function, optional columnType as nullable type) as table

About

Adds a column named newColumnName to the table table. The values for the column are computed using the specified selection function columnGenerator with each row taken as an input.

Example 1

Add a number column named "TotalPrice" to the table, with each value being the sum of the [Price] and [Shipping] columns.

Usage

Table.AddColumn(
    Table.FromRecords({
        [OrderID = 1, CustomerID = 1, Item = "Fishing rod", Price = 100.0, Shipping = 10.00],
        [OrderID = 2, CustomerID = 1, Item = "1 lb. worms", Price = 5.0, Shipping = 15.00],
        [OrderID = 3, CustomerID = 2, Item = "Fishing net", Price = 25.0, Shipping = 10.00]
    }),
    "TotalPrice",
    each [Price] + [Shipping],
    type number
)

Output

Table.FromRecords({
    [OrderID = 1, CustomerID = 1, Item = "Fishing rod", Price = 100, Shipping = 10, TotalPrice = 110],
    [OrderID = 2, CustomerID = 1, Item = "1 lb. worms", Price = 5, Shipping = 15, TotalPrice = 20],
    [OrderID = 3, CustomerID = 2, Item = "Fishing net", Price = 25, Shipping = 10, TotalPrice = 35]
})

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