Try something like this:

select
sum(case
when maintype <> 'Transmission '
and Diameter <= 2 and Material = 1
and (inServiceDate < '2014-11-01' OR InServiceDate IS Null)
then measuredlength ELSE 0 end) as P2_1

, sum(case
when maintype <> 'Transmission '
and Diameter <= 2 and Material = 2
and (inServiceDate < '2014-11-01' OR InServiceDate IS Null)
then measuredlength ELSE 0 end) as P2_2

, sum(case
when maintype <> 'Transmission '
and Diameter <= 2 and Material = 3
and (inServiceDate < '2014-11-01' OR InServiceDate IS Null)
then measuredlength ELSE 0 end) as P2_3

, sum(case
when NOT(
maintype <> 'Transmission '
and Diameter <= 2 and (Material >= 1 and Material <= 3)
and (inServiceDate < '2014-11-01' OR InServiceDate IS Null)
)
then measuredlength ELSE 0 end) AS Unknown

FROM XX
;

HTH,

Luis

Luis Rodriguez
IBM Certified Systems Expert — eServer i5 iSeries

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