Table.Combine
语法
Table.Combine(tables as list, optional columns as any) as table
关于
返回一个表,此表是合并表 tables
的列表的结果。 生成的表的行类型结构将由 columns
定义,或由输入类型的联合定义(如果未指定 columns
)。
示例 1
将以下三个表合并在一起。
使用情况
Table.Combine({ Table.FromRecords({ [CustomerID = 1, Name = "Bob", Phone = "123-4567"] }), Table.FromRecords({ [CustomerID = 2, Name = "Jim", Phone = "987-6543"] }), Table.FromRecords({ [CustomerID = 3, Name = "Paul", Phone = "543-7890"] }) })
输出
Table.FromRecords({ [CustomerID = 1, Name = "Bob", Phone = "123-4567"], [CustomerID = 2, Name = "Jim", Phone = "987-6543"], [CustomerID = 3, Name = "Paul", Phone = "543-7890"] })
示例 2
合并结构不同的三个表。
使用情况
Table.Combine({ Table.FromRecords({ [Name = "Bob", Phone = "123-4567"] }), Table.FromRecords({ [Fax = "987-6543", Phone = "838-7171"] }), Table.FromRecords({ [Cell = "543-7890"] }) })
输出
Table.FromRecords({ [Name = "Bob", Phone = "123-4567", Fax = null, Cell = null], [Name = null, Phone = "838-7171", Fax = "987-6543", Cell = null], [Name = null, Phone = null, Fax = null, Cell = "543-7890"] })
示例 3
合并两个表并投影到给定类型。
使用情况
Table.Combine( { Table.FromRecords({ [Name = "Bob", Phone = "123-4567"] }), Table.FromRecords({ [Fax = "987-6543", Phone = "838-7171"] }), Table.FromRecords({ [Cell = "543-7890"] }) }, { "CustomerID", "Name" })
输出
Table.FromRecords({ [CustomerID = null, Name = "Bob"], [CustomerID = null, Name = null], [CustomerID = null, Name = null] })