SQL- Add up Values in a Column

Question

How can I add up values in a SQL column? I have the table set up in xampp and I\'m trying to add up all the values in a column titled \"gross\".

Answer 1

SQL Server or MySQL:

select sum(MyColumn) as MyColumnSum from MyTable

If you need to sum a column by a grouping of another column

select sum(MyColumn) as MyColumnSum, OtherColumn from MyTable Group By OtherColumn

Here is a way to, separately, add up negative or positive numbers

select
  sum( case when MyColumn < 0 then MyColumn else 0 end ) as NegativeSum,
  sum( case when MyColumn > 0 then MyColumn else 0 end ) as PositiveSum
from
  MyTable

Reference

• MySQL Reference for SUM()

Answer 2

Take a look at the SUM() function documentation for MySQL.

SELECT    YourRecordID,
          SUM(Gross) AS GrossSum
FROM      YourTable
GROUP BY  YourRecordID

Answer 3

select sum(yourCol) as Gross
from YourTable

Use the aggregate function SUM().