Table.First

Syntax

Table.First(table as table, optional default as any) as any

About

如果表为空，default则返回第一行table或可选的默认值。

示例 1

查找表的第一行。

用法

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

输出

[CustomerID = 1, Name = "Bob", Phone = "123-4567"]

示例 2

查找表 ({}) 的第一行，如果为空，则返回 [a = 0， b = 0]。

用法

Table.First(Table.FromRecords({}), [a = 0, b = 0])

输出

[a = 0, b = 0]