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Help Needed With Query

I need help with one more Query and then I'm done.  For this one, I need to update the SinceLastAssigned value for every participant who has a value of zero to the MAX value in that column, plus one (in the case of the data presented, that would be 176).  Please let me know if you have any questions.  Appreciate the help!

Sample Data
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penlandt
Asked:
penlandt
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1 Solution
 
QlemoC++ DeveloperCommented:
Is 176 the value for all rows having a zero?
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penlandtAuthor Commented:
Yes, that's correct.   I'm assuming that this can be done in one query but the first part (of course) has to be identifying the maximum value in the since last assigned column, then updating all the rows where the value is 0 to that maximum value plus one.  Hope that helps.
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QlemoC++ DeveloperCommented:
That's easy. If you would need unique values, that's getting difficult ;-).
update  tbl set sinceLastAssigned = nextMaxAssigned
from (select max(sinceLastAssigned)+1 as nextMaxAssigned from tbl) m
where sinceLastAssigned = 0

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Vikas GargBusiness Intelligence DeveloperCommented:
Hi,

I agree with Qlemo,

You can Update
Update Tbl set sinceLastAssigned = (SELECT max(sinceLastAssigned) from Tbl)  +1
WHERE sinceLastAssigned = 0

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penlandtAuthor Commented:
Thank you very much, this was exactly what I needed!
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