sql server - Getting the difference -


can please me this?...

i have maintenance table named ticket table , transaction table called workplan.

ticket table contains tickedid, ticketname, startdate, estimated time of completion , total number of hours columns.

and workplan table has workplanid, ticketid(foreignkey), currentdate , ticket name, no of hours, , hours remained columns.

for instance:

i have ticket entry shown below.

ticket id / ticket name  / start date / estimated time of c. /total nb of hours 1         / sample name  / 05.21.2013 /  05.23.2013          / 21hours

and next table represents workplan.

workplanid / ticket id / currentdate / ticket name / no of hours / hours remained 1001       / 1         / may.21.2013 / sample name / 3           / 18

...workplan id autogenerated.

if user manage his/her workplan. current date automatically derived. user input his/her no of hours.

my question how can difference between total number of hours ticket table , hours remained in workplan table?

so if user has managed workplan again next day,

workplanid / ticket id / currentdate / ticket name / no of hours / hours remained 1001       / 1         / may.21.2013 / sample name / 3           / 18   1002       / 1         / may.22.2013 / sample name / 4           / 14

thank you. :d

im using vb.net , sqlserver backend.

(binding source)


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