Table.IsDistinct - Power Query

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Table.IsDistinct

Table.IsDistinct
Indicates whether the table contains only distinct rows (no duplicates).
function (table as table, optional comparisonCriteria as nullable any) as logical
Description
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.
Category
Table.Membership
Examples
Determine if the table is distinct.
1
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"]}))
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true
Determine if the table is distinct in column.
1
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")
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false

Table.InsertRows

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Table.IsDistinct