我如何...如何将重复的行添加为除sql中的一列之外的新行

问题描述

我有一个表tableName是tblProduct ...



表是



ID产品客户

1 Lux Hari

2 Dove Ram

2 Pears Banu





我需要将最后两行添加到同一个表中，除了像这样的ID ...



ID产品客户

1 Lux Hari

2 Dove Ram

2 Pears Banu

3 Dove Ram

3梨Banu

I have one table tableName is tblProduct...

the table is

ID Product Customer
1 Lux Hari
2 Dove Ram
2 Pears Banu


I need to add the Last two rows into the same table except id like this...

ID Product Customer
1 Lux Hari
2 Dove Ram
2 Pears Banu
3 Dove Ram
3 Pears Banu

推荐答案

insert into tblProduct(Product,Customer)  select Product,CustomerFrom tblProduct where id in (select max(id) from tblProduct union select max(id)-1  from tblProduct)

insert into tblProduct(id,Customer,Product)
(select TOP 2 id+1,Customer,Product
From tblProduct
group by id,Product,customer  )order by id desc

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