Question

I have a table with values

ID BarID FName LName ColA ColB ColC

1   22    Jon  Carr   0    2    1
2   23    Don  Brown  1    3    2
3   23    Don  Brown  2    1    2
4   24    A     B     0    2    1
5   24    A     B     2    3    1
6   24    A     B     1    2    3

Table name is Temp

I want to convert this table into something like this

ID BarID FName LName ColA ColB ColC

1   22    Jon  Carr   0    2    1
2   23    Don  Brown  3    4    4
4   24    A     B     3    7    5

Last 3 columns (ColA ColB ColC) of the duplicate rows (duplicate BarID) are summed up (summation)

What sql query can I write in sql server to achieve this?

Answer 1

SELECT
   MIN(ID), BarID, FName, LName, SUM(ColA), SUM(ColB), SUM(ColC)
FROM
   Temp
GROUP BY
   BarID, FName, LName