DECLARE @workflowTable AS TABLE (company varchar(50), wor...


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DECLARE @workflowTable AS TABLE (company varchar(50), workflow varchar(50), [date] datetime, cancel varchar(50))
('CompanyA',      'Workflow27',     'June 5 2011','N')
,('CompanyA',      'Workflow27',     'June 5 2011','Y')
,('CompanyA',      'Workflow27',     'June 8 2011','N')
,('CompanyA',      'Workflow27',     'June 12 2011','N')
,('CompanyB',      'Workflow13',     'Apr 4 2011','N')
,('CompanyB',      'Workflow13',     'Apr 9 2011','N')
,('CompanyB',      'Workflow20',     'Dec 11 2011','N')
,('CompanyB',      'Workflow20',     'Dec 17 2011','N')

;WITH partitioned AS (
        SELECT company
            ,ROW_NUMBER() OVER(PARTITION BY company, workflow
                                ORDER BY date) AS seq
            ,count(*) over (partition by workflow, date order by date) as seq2
        FROM @workflowTable
    SELECT, a.workflow,, a.seq, b.cancel, sum(a.seq2)
    FROM partitioned a
    left join (select workflow, date, cancel from partitioned where cancel = 'Y' group by workflow, date, cancel) b
    on b.workflow = a.workflow
    and =
    WHERE seq = 1
    group by, a.workflow,, a.seq, b.cancel

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