是否有任何 .net 库可用于 unpivot excel 数据?我目前正在使用 LinqToExcel 框架从电子表格中读取数据,因此不确定是否有动态 linq 查询可用于执行逆透视。感谢您的任何建议。顺便说一句,我正在寻找一种可以处理多列的解决方案。
例子
原表
Product Location Customer1 Customer2 Customer3
A X 10 20 100
目的地表
Product Location Customer Demand
A X Customer1 10
A X Customer2 20
A X Customer3 100
最佳答案
尝试这样的事情:
var customer1 =
from c in excel.Worksheet()
select new
{
Product = c["Product"],
Location = c["Location"],
Customer = "Customer1",
Demand = c["Customer1"],
};
var customer2 =
from c in excel.Worksheet()
select new
{
Product = c["Product"],
Location = c["Location"],
Customer = "Customer2",
Demand = c["Customer2"],
};
var customer3 =
from c in excel.Worksheet()
select new
{
Product = c["Product"],
Location = c["Location"],
Customer = "Customer3",
Demand = c["Customer3"],
};
var customers = customer1.Union(customer2).Union(customer3);
根据您的评论试试这个:
var columns = 4; /* how many columns to unpivot */
var customers =
from n in Enumerable.Range(2, columns)
from c in excel.Worksheet()
select new
{
Product = c["Product"].Value,
Location = c["Location"].Value,
Column = n.ToString(),
Demand = c[n].Value,
};
关于.net - 任何用于逆透视数据的 .Net 函数或 linq 查询,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11639687/