I have a record set for inspections of many peices of equipment. The four cols of interest are equip_id,month,year,myData.
My requirment is to have EXACTLY ONE Record per month for each peice of equipment.
I have a quiery that makes the data unique over equip_id,month,year. So there is no more than one record for each month/year for a peice of equipment. But now I need to simulate data for the missing month. I want to simply go back in time to get the last peice of my data.
So that may seem confusing, so i'll show by example.
Given this:
equip_id month year myData
1 1 2010 500
1 2 2010 600
1 5 2010 800
2 2 2010 300
2 4 2010 400
2 6 2010 500
I want this:
equip_id month year myData
1 1 2010 500
1 2 2010 600
1 3 2010 600
1 4 2010 600
1 5 2010 800
2 2 2010 300
2 3 2010 300
2 4 2010 400
2 5 2010 400
2 6 2010 500
Notice that im filling in missing data with the data from the month ( or two months etc.) before. Also note that if the first record for equip 2 is in 2/2010 than I don't need a record for 1/2010 even though I have one for equip 1.
I just need exactly one record for each month/year for each peice of equipment. So if the record does not exsist I just want to go back in time and grab the data for that record.
Thanks!!!
