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Table.Join

  • [アーティクル]

構文

Table.Join(table1 as table, key1 as any, table2 as table, key2 as any, optional joinKind as nullable number, optional joinAlgorithm as nullable number, optional keyEqualityComparers as nullable list) as table

バージョン情報

key1 (table1) および key2 (table2) によって選択されたキー列の値が等しいかどうかに基づいて、table1 の行を table2 の行と結合します。

既定では、内部結合が実行されますが、結合の種類を指定するために、省略可能な joinKind を含めることもできます。 次のオプションがあります。

キー列の比較方法を指定するために、省略可能な keyEqualityComparers のセットを含めることができます。 現在このパラメーターは、内部で使用することのみを目的としています。

例 1

1 つのキー列を試用して 2 つのテーブルを結合します。

使用方法

Table.Join(
    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"]
    }),
    "CustomerID",
    Table.FromRecords({
        [OrderID = 1, CustomerID = 1, Item = "Fishing rod", Price = 100.0],
        [OrderID = 2, CustomerID = 1, Item = "1 lb. worms", Price = 5.0],
        [OrderID = 3, CustomerID = 2, Item = "Fishing net", Price = 25.0],
        [OrderID = 4, CustomerID = 3, Item = "Fish tazer", Price = 200.0],
        [OrderID = 5, CustomerID = 3, Item = "Bandaids", Price = 2.0],
        [OrderID = 6, CustomerID = 1, Item = "Tackle box", Price = 20.0],
        [OrderID = 7, CustomerID = 5, Item = "Bait", Price = 3.25]
    }),
    "CustomerID"
)

出力

Table.FromRecords({
    [CustomerID = 1, Name = "Bob", Phone = "123-4567", OrderID = 1, Item = "Fishing rod", Price = 100],
    [CustomerID = 1, Name = "Bob", Phone = "123-4567", OrderID = 2, Item = "1 lb. worms", Price = 5],
    [CustomerID = 2, Name = "Jim", Phone = "987-6543", OrderID = 3, Item = "Fishing net", Price = 25],
    [CustomerID = 3, Name = "Paul", Phone = "543-7890", OrderID = 4, Item = "Fish tazer", Price = 200],
    [CustomerID = 3, Name = "Paul", Phone = "543-7890", OrderID = 5, Item = "Bandaids", Price = 2],
    [CustomerID = 1, Name = "Bob", Phone = "123-4567", OrderID = 6, Item = "Tackle box", Price = 20]
})

例 2

複数のキー列を使用して、競合している列名を持つ 2 つのテーブルを結合します。

使用方法

let
    customers = Table.FromRecords({
        [TenantID = 1, CustomerID = 1, Name = "Bob", Phone = "123-4567"],
        [TenantID = 1, CustomerID = 2, Name = "Jim", Phone = "987-6543"]
    }),
    orders = Table.FromRecords({
        [TenantID = 1, OrderID = 1, CustomerID = 1, Name = "Fishing rod", Price = 100.0],
        [TenantID = 1, OrderID = 2, CustomerID = 1, Name = "1 lb. worms", Price = 5.0],
        [TenantID = 1, OrderID = 3, CustomerID = 2, Name = "Fishing net", Price = 25.0]
    })
in
    Table.Join(
        customers,
        {"TenantID", "CustomerID"},
        Table.PrefixColumns(orders, "Order"),
        {"Order.TenantID", "Order.CustomerID"}
    )

Table.FromRecords({
    [TenantID = 1, CustomerID = 1, Name = "Bob", Phone = "123-4567", Order.TenantID = 1, Order.OrderID = 1, Order.CustomerID = 1, Order.Name = "Fishing rod", Order.Price = 100],
    [TenantID = 1, CustomerID = 1, Name = "Bob", Phone = "123-4567", Order.TenantID = 1, Order.OrderID = 2, Order.CustomerID = 1, Order.Name = "1 lb. worms", Order.Price = 5],
    [TenantID = 1, CustomerID = 2, Name = "Jim", Phone = "987-6543", Order.TenantID = 1, Order.OrderID = 3, Order.CustomerID = 2, Order.Name = "Fishing net", Order.Price = 25]
})