培训
Table.Unpivot
Table.Unpivot(table as table, pivotColumns as list, attributeColumn as text, valueColumn as text) as table
将表中的一组列转换为属性-值对,并与每行中的剩余值相结合。
选取表 ({[ key = "x", a = 1, b = null, c = 3 ], [ key = "y", a = 2, b = 4, c = null ]})
中的列“a”、“b”和“c”,并将它们逆透视为属性-值对。
使用情况
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]
})