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Table.IsDistinct

指出資料表是否只包含相異資料列 (沒有重複項目)。

Syntax​

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

Remarks​

指出 table 是否只包含相異資料列 (沒有重複項目)。如果資料列相異，則傳回 true，否則傳回 false。 選擇性參數 comparisonCriteria 可指定要測試是否有重複情況的資料表資料行。如果未指定 comparisonCriteria，則會測試所有資料行。

Examples​

Example #1​

判斷資料表是否相異。

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"]
    })
)

Result:

true

Example #2​

判斷資料表的資料行是否相異。

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"
)

Result:

false

Category​

Table.Membership