Table.RemoveFirstN

语法

Table.RemoveFirstN(table as table, optional countOrCondition as any) as table

关于

返回一个表，该表不包含表 table 中前数行 countOrCondition（行数为指定数字）。 删除的行数取决于可选参数 countOrCondition。

• 如果省略 countOrCondition 则只删除第一行。
• 如果 countOrCondition 是数字，则将删除多个行（从顶部开始）。
• 如果 countOrCondition 是条件，则将删除满足条件的行，直到出现不满足条件的行为止。

示例 1

删除表的第一行。

使用情况

Table.RemoveFirstN(
    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"]
    }),
    1
)

输出

Table.FromRecords({
    [CustomerID = 2, Name = "Jim", Phone = "987-6543"],
    [CustomerID = 3, Name = "Paul", Phone = "543-7890"],
    [CustomerID = 4, Name = "Ringo", Phone = "232-1550"]
})

示例 2

删除表的前两行。

使用情况

Table.RemoveFirstN(
    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"]
    }),
    2
)

输出

Table.FromRecords({
    [CustomerID = 3, Name = "Paul", Phone = "543-7890"],
    [CustomerID = 4, Name = "Ringo", Phone = "232-1550"]
})

示例 3

删除表中 [CustomerID] <=2 的前几行。

使用情况

Table.RemoveFirstN(
    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"]
    }), 
    each [CustomerID] <= 2
)

输出

Table.FromRecords({
    [CustomerID = 3, Name = "Paul", Phone = "543-7890"],
    [CustomerID = 4, Name = "Ringo", Phone = "232-1550"]
})