Question

我有一张表，我在下面提到过，我需要得到一个总结果，避免重复，任何人都可以提供任何帮助或建议如何获得下面提到的结果，thankyu

ID      name    Total   Used
24     John     5        2
24     John     10       6
27     Peter    20       0
27     Peter    20       5

结果应该是这样的

ID      name    Total   Used
24     John     15       8
27     Peter    40       5

Answer 1

看起来您只需要在两列上使用SUM()。还要在ID和名称

上使用GROUP BY

SELECT id, name, sum(total) All_total, sum(used) All_used
FROM yourtable
GROUP BY id, name

请参阅SQL Fiddle with Demo

GROUP BY字段必须包含您选择的不在聚合函数中的任何其他列，因此对于该示例，您将在{{1}中包含id和name }}

编辑＃1您的查询将是：

GROUP BY

Answer 2

select sum(Total), sum(Used), ID, name
from table
group by ID, name;

Answer 3

select ID,      name,   sum( Total,),  sum( Used)
from  table 
group by Id,name;

Answer 4

试试这个：

select id,name, sum(Total),sum(used)
from tab
group by id,name

Answer 5

SELECT id, name, sum(total) total, sum(used) used  from table GROUP BY id, name

Answer 6

此问题的MySql语法：

CREATE TABLE DUPLICATE (ID,NAME, TOTAL, USED);

INSERT INTO DUPLICATE VALUES(24,'John',5,2);
INSERT INTO DUPLICATE VALUES(24,'John',10,6);
INSERT INTO DUPLICATE VALUES(27,'Peter',20,0);
INSERT INTO DUPLICATE VALUES(27,'Peter',20,5);

SELECT ID, NAME, SUM(TOTAL), SUM(USED) FROM DUPLICATE GROUP BY ID, NAME;

从表中计算重复项

6 个答案: