Add a running sum column in a query

I am having trouble adding a column in a query which is a running
total of my records.

Example:

Table 1 Column 1 has a data in each row as 1, 2, 3, 4, 5.

Now i want to add a column in a query which gives me the data of
column 1 and column 2 should be running total as 1, 3 (1+2), 6(1+2+3),
10 (1+2+3+4).