sql server - Group a Group in SQL -


i have following query:

select inspections.pipe_segment_reference, (count(*) * conditions.structural_grade) structural_rating (     select inspections.pipe_segment_reference, conditions.structural_grade     conditions     inner join inspections     on conditions.inspectionid = inspections.inspectionid     conditions.structural_grade not null ) group inspections.pipe_segment_reference, conditions.structural_grade;

which outputs

22, 2 22, 4 79, 2 79, 5 79, 3

i want further group pipe_segment_reference output of

22, 6 79, 10

i tried adding additional select around query above can't work.

you're on right track adding additional select around working query. try this...

select     derivedyourinitialquery.pipe_segment_reference,     sum(derivedyourinitialquery.structural_rating) newtotal     (     select inspections.pipe_segment_reference,     (count(*) * conditions.structural_grade) structural_rating     (         select inspections.pipe_segment_reference, conditions.structural_grade         conditions         inner join inspections         on conditions.inspectionid = inspections.inspectionid         conditions.structural_grade not null     )     group inspections.pipe_segment_reference, conditions.structural_grade     ) derivedyourinitialquery group     derivedyourinitialquery.pipe_segment_reference

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