Table.FirstN
Table.FirstN( table as table, optional countOrCondition as any) as table
返回表 table
的前几行,具体取决于 countOrCondition
的值:
- 如果
countOrCondition
为数字,则将返回多行(从顶部开始)。 - 如果
countOrCondition
是条件,将返回满足此条件的行,直到行不满足条件为止。
示例:
查找表的前两行。
使用情况:
Table.FirstN(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=1,Name="Bob",Phone="123-4567"],[CustomerID=2,Name="Jim",Phone="987-6543"]})
示例:
查找表中 [a] > 0 的前几行。
使用情况:
Table.FirstN(Table.FromRecords({[a = 1, b = 2], [a = 3, b = 4], [a = -5, b = -6]}), each [a] > 0)
输出:
Table.FromRecords({ [a = 1, b = 2], [a = 3, b = 4] })