Table.HasColumns

Syntax

Table.HasColumns(table as table, columns as any) as logical 

About

指示table是否包含指定的列。 columns 如果 true 表包含列， false 则返回;否则返回。

示例 1

确定表是否具有列 [Name]。

用法

Table.HasColumns(
    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"]
    }),
    "Name"
)

输出

true

示例 2

查找表是否具有列 [Name] 和 [PhoneNumber]。

用法

Table.HasColumns(
    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"]
    }),
    {"Name", "PhoneNumber"}
)

输出

false