Table.Unpivot

Syntax

Table.Unpivot(
    table as table,
    pivotColumns as list,
    attributeColumn as text,
    valueColumn as text
) as table

About

将表中的一组列转换为属性值对，并结合每行中的其余值。

示例 1

将表中 ({[ key = "x", a = 1, b = null, c = 3 ], [ key = "y", a = 2, b = 4, c = null ]}) 的列“a”、“b”和“c”取消透视为属性值对。

用法

Table.Unpivot(
    Table.FromRecords({
        [key = "x", a = 1, b = null, c = 3],
        [key = "y", a = 2, b = 4, c = null]
    }),
    {"a", "b", "c"},
    "attribute",
    "value"
)

输出

Table.FromRecords({
    [key = "x", attribute = "a", value = 1],
    [key = "x", attribute = "c", value = 3],
    [key = "y", attribute = "a", value = 2],
    [key = "y", attribute = "b", value = 4]
})