Table.IsDistinct

Syntax

Table.IsDistinct(table as table, optional comparisonCriteria as any) as logical  

About

Indicates whether the table contains only distinct rows (no duplicates). Returns true if the rows are distinct, false otherwise. An optional parameter, comparisonCriteria, specifies which columns of the table are tested for duplication. If comparisonCriteria is not specified, all columns are tested.

Example 1

Determine if the table is distinct.

Table.IsDistinct(
    Table.FromRecords({
        [CustomerID = 1, Name = "Bob", Phone = "123-4567"],
        [CustomerID = 2, Name = "Jim", Phone = "987-6543"],
        [CustomerID = 3, Name = "Paul", Phone = "543-7890"],
        [CustomerID = 4, Name = "Ringo", Phone = "232-1550"]
    })
)

true

Example 2

Determine if the table is distinct in column.

Table.IsDistinct(
    Table.FromRecords({
        [CustomerID = 1, Name = "Bob", Phone = "123-4567"],
        [CustomerID = 2, Name = "Jim", Phone = "987-6543"],
        [CustomerID = 3, Name = "Paul", Phone = "543-7890"],
        [CustomerID = 5, Name = "Bob", Phone = "232-1550"]
    }),
    "Name"
)

false