Want to take the difference of two columns in Sql

Question

I want to take the difference of columns of a table.we have column name as Planned_date so now I Want to take the difference of these two columns

A = Planned_Dat         


        

Answer 1

Try this -

SELECT
    s1.planned_arrival - s2.planned_arrival AS val
FROM
    shipment_stop s1,
    shipment_stop s2
WHERE
    s1.stop_num = 1
    AND s2.stop_num = 5
    AND s1.shipment_gid = 'IFFCO/LOGISTICS.L171009358'
    AND s1.shipment_gid = s2.shipment_gid;