Table.LastN

Syntax

Table.LastN(table as table, countOrCondition as any) as table

About

返回表中的最后一行， table具体取决于值 countOrCondition：

• 如果 countOrCondition 为数字，则从位置开始返回许多行（结束 - countOrCondition）。
• 如果是 countOrCondition 条件，则满足条件的行将按升序返回，直到某行不满足条件。

示例 1

查找表的最后两行。

用法

Table.LastN(
    Table.FromRecords({
        [CustomerID = 1, Name = "Bob", Phone = "123-4567"],
        [CustomerID = 2, Name = "Jim", Phone = "987-6543"],
        [CustomerID = 3, Name = "Paul", Phone = "543-7890"]
    }),
    2
)

输出

Table.FromRecords({
    [CustomerID = 2, Name = "Jim", Phone = "987-6543"],
    [CustomerID = 3, Name = "Paul", Phone = "543-7890"]
})

示例 2

查找表中 [a] > 0 的最后一行。

用法

Table.LastN(
    Table.FromRecords({
        [a = -1, b = -2],
        [a = 3, b = 4],
        [a = 5, b = 6]
    }),
    each _ [a] > 0

输出

Table.FromRecords({
    [a = 3, b = 4],
    [a = 5, b = 6]
})