count sum of a column and group it by column with same value

Question

how to select the sum of the number column and then group it with name

name | number
a    | 100
b    | 10
a    | 50
b    | 40
c    | 200
a    | 20

expected result :

name | number
a    | 170
b    | 50
c    | 200

Answer 1

SELECT name, 
SUM (number)
FROM tablename
GROUP BY name;

Answer 2

我明白了我很抱歉

SELECT NAME, SUM(NUMBER) AS NUMBER FROM TABLE GROUP BY NAME