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UNION

概述

从一对表创建联合表。

语法

分析表达式

UNION(<table_expression1>, <table_expression2> [,<table_expression>]…)

参数

参数	定义
table_expression	任何返回表的分析表达式。

返回值

返回一个表，其中包含两个表表达式中的所有行。

示例

比如Product 表为：

NAME
a
b

分析表达式

UNION(SELECTCOLUMNS('Product',"NAME",'Product'[name]),SELECTCOLUMNS('Product',"NAME",'Product'[name] & "1"))

那么经过如上表达式后返回：

NAME
a
b
a1
b1

备注

这两个表必须具有相同的列数。
列按其各自表中的位置进行组合。
返回表中的列名将与 table_expression1 中的列名相匹配。
保留重复的行。