如果记录不是唯一的，则从表中获取唯一的记录+总和

Question

I have a table in mysql like below :

Table name : Emp

Emp Name | Time 
_______________
ABC      | 1
ABC      | 2
ABC      | 3
PQS      | 4
XYZ      | 5

I want the output as below

Emp Name | Time 
_______________
ABC      | 6
PQS      | 4
XYZ      | 5

As you can see only the unique Emp names are returned and the time is added for each instance of Emp name.

Answer 1

This might help:

SELECT
   EmpName,
   SUM(Time) AS Total
FROM
  table1
GROUP BY
   EmpName

Answer 2

This is a rudimentary aggregate SUM() grouping by Emp Name :

SELECT 
  EmpName,
  SUM(Time) AS Time
FROM Emp
GROUP BY EmpName
ORDER BY EmpName

Review the MySQL documentation on aggregate functions and the use of GROUP BY clauses.

Note, if your column name is actually Emp Name with the space, you will need to quote it with backticks as in:

SELECT 
  `Emp Name`,
  SUM(Time) AS Time
FROM Emp
GROUP BY `Emp Name`
ORDER BY `Emp Name`