更改表合并列中具有相同值的2行

Question

我有一个表，我想合并两行具有相同名称的数据，如下所示：

id | name    | price | priced

1  | Samsung | 100   | 0

2  | Samsung | 0     | 500

---

我希望最后的输入是：

id               | name    | price | priced

(doesn't matter) | Samsung | 100   | 500 

Answer 1

试试这个：

SELECT MAX(id) as id, name,MAX(price) as price, MAX(priced) as priced
FROM TableName
GROUP BY name

要插入表格：

INSERT INTO Table2 VALUES
(SELECT MAX(id) as id, name,MAX(price) as price, MAX(priced) as priced
FROM TableName
GROUP BY name)

修改

正如你所说，合并（插入新的和删除其他人）

INSERT INTO TableName VALUES
(SELECT MAX(id)+1 as id, name,MAX(price) as price, MAX(priced) as priced
FROM TableName
GROUP BY name)

--Now deleting others
DELETE T1 FROM TableName T1, TableName T2 WHERE T1.id < T2.id AND T1.name = T2.name

Answer 2

你想要这个吗？

 select id , name,
 sum(price) as price, sum(priced) as priced from table1
 group by name

Answer 3

我知道你想加价不是最大的。我想你应该换个新桌子＆＃39; table2＆＃39;并按以下方式向其添加行：

INSERT INTO table2 Values (
SELECT
  name,
  SUM(price),
  SUM(priced)
FROM table1
GROUP BY name )

然后删除table1。这样，您将从table1

添加具有相同名称的行