Table.AddKey - Power Query

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Table.AddKey

Table.AddKey
Add a key to a table, specify the subset of the table?s column names that defines the key, and specify whether the key is primary.
function (table as table, columns as list, isPrimary as logical) as table
Description
Add a key to table, given columns is the subset of table's column names that defines the key, and isPrimary specifies whether the key is primary.
Category
Table.Transformation
Examples
Add a key to {[Id = 1, Name = "Hello There"], [Id = 2, Name = "Good Bye"]} that comprise of {"Id"} and make it a primary.
let
    tableType = type table [Id = Int32.Type, Name = text],
    table = Table.FromRecords({[Id = 1, Name = "Hello There"], [Id = 2, Name = "Good Bye"]}),
    resultTable = Table.AddKey(table, {"Id"}, true)
in
    resultTable
Table.FromRecords({[Id = 1, Name = "Hello There"], [Id = 2, Name = "Good Bye"]}, { "Id", "Name" })

Table.AddJoinColumn

Table.AggregateTableColumn

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Table.AddKey

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